From b1ef5b79f72c7dfa90efa0fb21bf7574290058b1 Mon Sep 17 00:00:00 2001
From: Sheetal Nandi <shkamat@microsoft.com>
Date: Fri, 17 Mar 2023 12:58:55 -0700
Subject: [PATCH] Convert config file parsing tests to baseline for easier
 future update verification and adds missing location verification (#53324)

---
 src/testRunner/tests.ts                       |    2 +-
 .../config/configurationExtension.ts          |  327 +--
 .../config/convertCompilerOptionsFromJson.ts  |  945 ++-------
 .../config/convertTypeAcquisitionFromJson.ts  |  273 +--
 src/testRunner/unittests/config/helpers.ts    |  105 +
 src/testRunner/unittests/config/matchFiles.ts | 1812 ++++-------------
 .../unittests/config/projectReferences.ts     |  355 ----
 .../unittests/config/tsconfigParsing.ts       |  613 +++---
 .../config/tsconfigParsingWatchOptions.ts     |  100 +-
 .../unittests/tsc/projectReferencesConfig.ts  |  253 +++
 ...only once under a case insensitive host.js |  157 ++
 ...y only once under a case sensitive host.js |  157 ++
 ...only once under a case insensitive host.js |  155 ++
 ...s only once under a case sensitive host.js |  155 ++
 ...r a case insensitive host with json api.js |  443 ++++
 ...nsensitive host with jsonSourceFile api.js |  461 +++++
 ...der a case sensitive host with json api.js |  443 ++++
 ... sensitive host with jsonSourceFile api.js |  461 +++++
 ...ailing comments with jsonSourceFile api.js |   18 +
 ...ile as an array with jsonSourceFile api.js |   34 +
 ...ding characters with jsonSourceFile api.js |   27 +
 ...ling characters with jsonSourceFile api.js |   34 +
 ....json to compiler-options with json api.js |   44 +
 ...ompiler-options with jsonSourceFile api.js |   44 +
 ...false to compiler-options with json api.js |   45 +
 ...ompiler-options with jsonSourceFile api.js |   45 +
 ....json to compiler-options with json api.js |   39 +
 ...ompiler-options with jsonSourceFile api.js |   39 +
 ...false to compiler-options with json api.js |   41 +
 ...ompiler-options with jsonSourceFile api.js |   41 +
 ....json to compiler-options with json api.js |   23 +
 ...ompiler-options with jsonSourceFile api.js |   23 +
 ....json to compiler-options with json api.js |   18 +
 ...ompiler-options with jsonSourceFile api.js |   18 +
 ... libs to compiler-options with json api.js |   31 +
 ...ompiler-options with jsonSourceFile api.js |   31 +
 ...fixes to compiler-options with json api.js |   23 +
 ...ompiler-options with jsonSourceFile api.js |   23 +
 ...array to compiler-options with json api.js |   34 +
 ...ompiler-options with jsonSourceFile api.js |   37 +
 ... libs to compiler-options with json api.js |   37 +
 ...ompiler-options with jsonSourceFile api.js |   40 +
 ...ingle to compiler-options with json api.js |   27 +
 ...ompiler-options with jsonSourceFile api.js |   27 +
 ...fixes to compiler-options with json api.js |   29 +
 ...ompiler-options with jsonSourceFile api.js |   29 +
 ...f jsx to compiler-options with json api.js |   31 +
 ...ompiler-options with jsonSourceFile api.js |   34 +
 ... libs to compiler-options with json api.js |   39 +
 ...ompiler-options with jsonSourceFile api.js |   42 +
 ...odule to compiler-options with json api.js |   29 +
 ...ompiler-options with jsonSourceFile api.js |   32 +
 ...ution to compiler-options with json api.js |   27 +
 ...ompiler-options with jsonSourceFile api.js |   30 +
 ...wLine to compiler-options with json api.js |   29 +
 ...ompiler-options with jsonSourceFile api.js |   32 +
 ...arget to compiler-options with json api.js |   27 +
 ...ompiler-options with jsonSourceFile api.js |   30 +
 ....json to compiler-options with json api.js |   28 +
 ...ompiler-options with jsonSourceFile api.js |   31 +
 ....json to compiler-options with json api.js |   23 +
 ...ompiler-options with jsonSourceFile api.js |   26 +
 ... numbers in tsconfig.json with json api.js |   25 +
 ...n tsconfig.json with jsonSourceFile api.js |   25 +
 ... libs to compiler-options with json api.js |   34 +
 ...ompiler-options with jsonSourceFile api.js |   37 +
 ...fixes to compiler-options with json api.js |   27 +
 ...ompiler-options with jsonSourceFile api.js |   27 +
 ...invalid strings with jsonSourceFile api.js |  114 ++
 ...t object at all with jsonSourceFile api.js |   22 +
 ...ompilerOptions' with jsonSourceFile api.js |   24 +
 ...compilerOptions with jsonSourceFile api.js |   24 +
 ....json to typeAcquisition  with json api.js |   38 +
 ...ypeAcquisition  with jsonSourceFile api.js |   38 +
 ....json to typeAcquisition  with json api.js |   20 +
 ...ypeAcquisition  with jsonSourceFile api.js |   20 +
 ....json to typeAcquisition  with json api.js |   20 +
 ...ypeAcquisition  with jsonSourceFile api.js |   20 +
 ....json to typeAcquisition  with json api.js |   25 +
 ...ypeAcquisition  with jsonSourceFile api.js |   28 +
 ....json to typeAcquisition  with json api.js |   25 +
 ...ypeAcquisition  with jsonSourceFile api.js |   28 +
 ....json to typeAcquisition  with json api.js |   34 +
 ...ypeAcquisition  with jsonSourceFile api.js |   34 +
 ...perty to typeAcquisition  with json api.js |   24 +
 ...ypeAcquisition  with jsonSourceFile api.js |   24 +
 ...perty to typeAcquisition  with json api.js |   24 +
 ...ypeAcquisition  with jsonSourceFile api.js |   24 +
 .../starstart/star with json api.js           |  109 +
 .../starstart/star with jsonSourceFile api.js |  108 +
 ...ays include literal files with json api.js |  116 ++
 ...e literal files with jsonSourceFile api.js |  115 ++
 .../and empty exclude with json api.js        |   62 +
 ...d empty exclude with jsonSourceFile api.js |   61 +
 .../and exclusions with json api.js           |   66 +
 .../and exclusions with jsonSourceFile api.js |   65 +
 ...xplicit recursive include with json api.js |   63 +
 ...cursive include with jsonSourceFile api.js |   62 +
 ...explicit wildcard include with json api.js |   62 +
 ...ildcard include with jsonSourceFile api.js |   61 +
 .../and no exclusions with json api.js        |   60 +
 ...d no exclusions with jsonSourceFile api.js |   59 +
 .../and wildcard include with json api.js     |   59 +
 ...ildcard include with jsonSourceFile api.js |   58 +
 ...t removed due to excludes with json api.js |  111 +
 ...due to excludes with jsonSourceFile api.js |  110 +
 ...tern starts with starstar with json api.js |   97 +
 ...s with starstar with jsonSourceFile api.js |   96 +
 ...ern starts with starstart with json api.js |   99 +
 ... with starstart with jsonSourceFile api.js |   98 +
 ...latforms case insensitive with json api.js |   39 +
 ...ase insensitive with jsonSourceFile api.js |   37 +
 ... platforms case sensitive with json api.js |   36 +
 ... case sensitive with jsonSourceFile api.js |   34 +
 .../case sensitive with json api.js           |   97 +
 .../case sensitive with jsonSourceFile api.js |   96 +
 ... files when allowJs=false with json api.js |  110 +
 ...n allowJs=false with jsonSourceFile api.js |  109 +
 ....js files using wildcards with json api.js |  117 ++
 ...using wildcards with jsonSourceFile api.js |  116 ++
 ...les with .. in their name with json api.js |  110 +
 .... in their name with jsonSourceFile api.js |  109 +
 .../exclude folders with json api.js          |  114 ++
 ...exclude folders with jsonSourceFile api.js |  113 +
 ...ject using relative paths with json api.js |  107 +
 ... relative paths with jsonSourceFile api.js |  106 +
 ...udes after a subdirectory with json api.js |  114 ++
 ... a subdirectory with jsonSourceFile api.js |  116 ++
 ...xcludes immediately after with json api.js |  114 ++
 ...mediately after with jsonSourceFile api.js |  116 ++
 .../matchFiles/in excludes with json api.js   |  111 +
 .../in excludes with jsonSourceFile api.js    |  110 +
 ...iling recursive directory with json api.js |  107 +
 ...rsive directory with jsonSourceFile api.js |  106 +
 ...udes after a subdirectory with json api.js |  102 +
 ... a subdirectory with jsonSourceFile api.js |  104 +
 ...ncludes immediately after with json api.js |  102 +
 ...mediately after with jsonSourceFile api.js |  104 +
 ...ursive directory patterns with json api.js |  108 +
 ...ectory patterns with jsonSourceFile api.js |  107 +
 ...iling recursive directory with json api.js |  102 +
 ...rsive directory with jsonSourceFile api.js |  104 +
 ...s files when allowJs=true with json api.js |  112 +
 ...en allowJs=true with jsonSourceFile api.js |  111 +
 ...s files when allowJs=true with json api.js |  112 +
 ...en allowJs=true with jsonSourceFile api.js |  111 +
 ...les with .. in their name with json api.js |  108 +
 .... in their name with jsonSourceFile api.js |  107 +
 ...ject using relative paths with json api.js |  112 +
 ... relative paths with jsonSourceFile api.js |  111 +
 ...hs outside of the project with json api.js |  110 +
 ... of the project with jsonSourceFile api.js |  109 +
 ...hen in alphabetical order with json api.js |  115 ++
 ...habetical order with jsonSourceFile api.js |  114 ++
 ...g files are still present with json api.js |  105 +
 ...e still present with jsonSourceFile api.js |  104 +
 ...s only a single character with json api.js |  105 +
 ...ingle character with jsonSourceFile api.js |  104 +
 ...declarations are excluded with json api.js |  106 +
 ...ns are excluded with jsonSourceFile api.js |  105 +
 ...tar matches only ts files with json api.js |  106 +
 ...s only ts files with jsonSourceFile api.js |  105 +
 ...e not explicitly included with json api.js |   63 +
 ...icitly included with jsonSourceFile api.js |   62 +
 ...d directories are present with json api.js |   34 +
 ...ies are present with jsonSourceFile api.js |   32 +
 ...th case sensitive exclude with json api.js |  101 +
 ...nsitive exclude with jsonSourceFile api.js |  100 +
 ...folders and empty exclude with json api.js |   69 +
 ...d empty exclude with jsonSourceFile api.js |   68 +
 ...ge folders and exclusions with json api.js |   75 +
 ... and exclusions with jsonSourceFile api.js |   74 +
 ...folders and no exclusions with json api.js |   69 +
 ...d no exclusions with jsonSourceFile api.js |   68 +
 .../matchFiles/with defaults with json api.js |   54 +
 .../with defaults with jsonSourceFile api.js  |   52 +
 ...h jsx=none, allowJs=false with json api.js |   71 +
 ..., allowJs=false with jsonSourceFile api.js |   70 +
 ...th jsx=none, allowJs=true with json api.js |   73 +
 ...e, allowJs=true with jsonSourceFile api.js |   72 +
 ...x=preserve, allowJs=false with json api.js |   74 +
 ..., allowJs=false with jsonSourceFile api.js |   73 +
 ...sx=preserve, allowJs=true with json api.js |   76 +
 ...e, allowJs=true with jsonSourceFile api.js |   75 +
 ...act-native, allowJs=false with json api.js |   74 +
 ..., allowJs=false with jsonSourceFile api.js |   73 +
 ...eact-native, allowJs=true with json api.js |   76 +
 ...e, allowJs=true with jsonSourceFile api.js |   75 +
 .../with literal excludes with json api.js    |  110 +
 ...iteral excludes with jsonSourceFile api.js |  109 +
 ...with literal include list with json api.js |  103 +
 ...al include list with jsonSourceFile api.js |  102 +
 ...ith wildcard include list with json api.js |  103 +
 ...rd include list with jsonSourceFile api.js |  102 +
 ...ple recursive directories with json api.js |  111 +
 ...ive directories with jsonSourceFile api.js |  110 +
 ...e extensions are excluded with json api.js |  103 +
 ...ns are excluded with jsonSourceFile api.js |  102 +
 .../with recursive directory with json api.js |  107 +
 ...rsive directory with jsonSourceFile api.js |  106 +
 .../with recursive excludes with json api.js  |  120 ++
 ...ursive excludes with jsonSourceFile api.js |  119 ++
 ...ds that match directories with json api.js |   62 +
 ...tch directories with jsonSourceFile api.js |   61 +
 ...dcards that match nothing with json api.js |   63 +
 ...t match nothing with jsonSourceFile api.js |   62 +
 ...itly exclude dotted files with json api.js |   62 +
 ...de dotted files with jsonSourceFile api.js |   61 +
 .../with wildcard excludes with json api.js   |  123 ++
 ...ldcard excludes with jsonSourceFile api.js |  122 ++
 ...ns with literal file list with json api.js |  105 +
 ...teral file list with jsonSourceFile api.js |  104 +
 ...with literal include list with json api.js |  105 +
 ...al include list with jsonSourceFile api.js |  104 +
 .../without wildcards with json api.js        |   60 +
 ...thout wildcards with jsonSourceFile api.js |   59 +
 ...when explicitly requested with json api.js |   24 +
 ...citly requested with jsonSourceFile api.js |   24 +
 ...ly in directory seperator with json api.js |    8 +
 ...ctory seperator with jsonSourceFile api.js |    8 +
 ...e references are provided with json api.js |   16 +
 ...es are provided with jsonSourceFile api.js |   16 +
 ...tionDir unless overridden with json api.js |   42 +
 ...less overridden with jsonSourceFile api.js |   42 +
 ... outDir unless overridden with json api.js |   42 +
 ...less overridden with jsonSourceFile api.js |   42 +
 ...rectory with no .ts files with json api.js |   15 +
 ...th no .ts files with jsonSourceFile api.js |   15 +
 ...rrors for empty directory with json api.js |   15 +
 ...empty directory with jsonSourceFile api.js |   15 +
 ...o references are provided with json api.js |   17 +
 ...es are provided with jsonSourceFile api.js |   20 +
 ...rors for empty files list with json api.js |   16 +
 ...mpty files list with jsonSourceFile api.js |   19 +
 ... errors for empty include with json api.js |   16 +
 ...r empty include with jsonSourceFile api.js |   16 +
 ... for includes with outDir with json api.js |   19 +
 ...des with outDir with jsonSourceFile api.js |   19 +
 ...ent in tsconfig with jsonSourceFile api.js |   55 +
 ... when files is not string with json api.js |   14 +
 ...s is not string with jsonSourceFile api.js |   17 +
 ...hen include is not string with json api.js |   15 +
 ...e is not string with jsonSourceFile api.js |   18 +
 ...aracters in strings correctly jsonParse.js |   29 +
 ... dotted files and folders with json api.js |   22 +
 ...les and folders with jsonSourceFile api.js |   22 +
 ...de common package folders with json api.js |   25 +
 ...package folders with jsonSourceFile api.js |   25 +
 ...eeps string content untouched jsonParse.js |   29 +
 ...mit tsconfig.json file with diagnostics.js |   28 +
 ...ent directories have dots with json api.js |    8 +
 ...ories have dots with jsonSourceFile api.js |    8 +
 ...onfig object without comments jsonParse.js |   33 +
 ...g for file with comments only jsonParse.js |   13 +
 ...or file with only whitespaces jsonParse.js |   13 +
 ...g when config is empty object jsonParse.js |    6 +
 ...en tsconfig have excludes with json api.js |   24 +
 ...g have excludes with jsonSourceFile api.js |   27 +
 ...ers correctly specify library jsonParse.js |   34 +
 ...th error when json is invalid jsonParse.js |   10 +
 .../different options with json api.js        |  148 +-
 ...fferent options with jsonSourceFile api.js |  132 +-
 ...hOptions specified option with json api.js |   18 +-
 ...pecified option with jsonSourceFile api.js |   15 +-
 ...hOptions specified option with json api.js |   15 +-
 ...pecified option with jsonSourceFile api.js |   13 +-
 ...g passed in watch options with json api.js |   33 +-
 ...n watch options with jsonSourceFile api.js |   28 +-
 ...ig file with watchOptions with json api.js |   42 +-
 ...th watchOptions with jsonSourceFile api.js |   36 +-
 ...file without watchOptions with json api.js |   42 +-
 ...ut watchOptions with jsonSourceFile api.js |   36 +-
 .../default-setup-was-created-correctly.js    |  111 +
 ...ve-composite-if-its-a-container-project.js |   72 +
 ...snt-infer-the-rootDir-from-source-paths.js |   97 +
 ...rors-when-a-file-is-outside-the-rootdir.js |  139 ++
 ...ed-project-reference-doesnt-set-outFile.js |  122 ++
 ...d-project-reference-output-doesnt-exist.js |  139 ++
 .../errors-when-declaration-=-false.js        |  101 +
 ...rs-when-the-file-list-is-not-exhaustive.js |  137 ++
 ...hen-the-referenced-project-doesnt-exist.js |  107 +
 ...eferenced-project-doesnt-have-composite.js |  122 ++
 ...g-when-module-reference-is-not-relative.js |  137 ++
 ...ce-error-when-the-input-file-is-missing.js |  131 ++
 .../redirects-to-the-output-dts-file.js       |  156 ++
 285 files changed, 20659 insertions(+), 3413 deletions(-)
 create mode 100644 src/testRunner/unittests/config/helpers.ts
 delete mode 100644 src/testRunner/unittests/config/projectReferences.ts
 create mode 100644 src/testRunner/unittests/tsc/projectReferencesConfig.ts
 create mode 100644 tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case insensitive host.js
 create mode 100644 tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case sensitive host.js
 create mode 100644 tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case insensitive host.js
 create mode 100644 tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case sensitive host.js
 create mode 100644 tests/baselines/reference/config/configurationExtension/under a case insensitive host with json api.js
 create mode 100644 tests/baselines/reference/config/configurationExtension/under a case insensitive host with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/configurationExtension/under a case sensitive host with json api.js
 create mode 100644 tests/baselines/reference/config/configurationExtension/under a case sensitive host with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Allow trailing comments with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file as an array with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray leading characters with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray trailing characters with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with json api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert tsconfig options when there are multiple invalid strings with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/Don't crash when root expression is not object at all with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/does not raise an error if you've set a compiler flag in the root when you have included 'compilerOptions' with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertCompilerOptionsFromJson/raises an error if you've set a compiler flag in the root without including compilerOptions with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with json api.js
 create mode 100644 tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with json api.js
 create mode 100644 tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with jsonSourceFile api.js
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 create mode 100644 tests/baselines/reference/config/matchFiles/in excludes after a subdirectory with json api.js
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 create mode 100644 tests/baselines/reference/config/matchFiles/is sorted in include order, then in alphabetical order with json api.js
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 create mode 100644 tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/exclude outDir unless overridden with json api.js
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 create mode 100644 tests/baselines/reference/config/tsconfigParsing/generates errors for directory with no .ts files with json api.js
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 create mode 100644 tests/baselines/reference/config/tsconfigParsing/generates errors for empty include with json api.js
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 create mode 100644 tests/baselines/reference/config/tsconfigParsing/generates errors for when invalid comment type present in tsconfig with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/handles escaped characters in strings correctly jsonParse.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/keeps string content untouched jsonParse.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/parse and re-emit tsconfig.json file with diagnostics.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns config object without comments jsonParse.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns empty config for file with comments only jsonParse.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns empty config for file with only whitespaces jsonParse.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns empty config when config is empty object jsonParse.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with json api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with jsonSourceFile api.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns object when users correctly specify library jsonParse.js
 create mode 100644 tests/baselines/reference/config/tsconfigParsing/returns object with error when json is invalid jsonParse.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/does-not-error-when-the-referenced-project-doesnt-have-composite-if-its-a-container-project.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-doesnt-set-outFile.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-output-doesnt-exist.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js
 create mode 100644 tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js

diff --git a/src/testRunner/tests.ts b/src/testRunner/tests.ts
index c95ca207db5..b658c72e1fe 100644
--- a/src/testRunner/tests.ts
+++ b/src/testRunner/tests.ts
@@ -25,7 +25,6 @@ import "./unittests/config/convertCompilerOptionsFromJson";
 import "./unittests/config/convertTypeAcquisitionFromJson";
 import "./unittests/config/initializeTSConfig";
 import "./unittests/config/matchFiles";
-import "./unittests/config/projectReferences";
 import "./unittests/config/showConfig";
 import "./unittests/config/tsconfigParsing";
 import "./unittests/config/tsconfigParsingWatchOptions";
@@ -106,6 +105,7 @@ import "./unittests/tsc/forceConsistentCasingInFileNames";
 import "./unittests/tsc/incremental";
 import "./unittests/tsc/listFilesOnly";
 import "./unittests/tsc/projectReferences";
+import "./unittests/tsc/projectReferencesConfig";
 import "./unittests/tsc/redirect";
 import "./unittests/tsc/runWithoutArgs";
 import "./unittests/tscWatch/consoleClearing";
diff --git a/src/testRunner/unittests/config/configurationExtension.ts b/src/testRunner/unittests/config/configurationExtension.ts
index 8fbc2202b46..6fe41598345 100644
--- a/src/testRunner/unittests/config/configurationExtension.ts
+++ b/src/testRunner/unittests/config/configurationExtension.ts
@@ -1,6 +1,8 @@
 import * as fakes from "../../_namespaces/fakes";
+import * as Harness from "../../_namespaces/Harness";
 import * as ts from "../../_namespaces/ts";
 import * as vfs from "../../_namespaces/vfs";
+import { baselineParseConfig, baselineParseConfigHost } from "./helpers";
 
 function createFileSystem(ignoreCase: boolean, cwd: string, root: string) {
     return new vfs.FileSystem(ignoreCase, {
@@ -207,46 +209,46 @@ function createFileSystem(ignoreCase: boolean, cwd: string, root: string) {
                 "dev/tests/utils.ts": "",
                 "dev/tests/scenarios/first.json": "",
                 "dev/tests/baselines/first/output.ts": "",
-                    "dev/configs/extendsArrayFirst.json": JSON.stringify({
-                        compilerOptions: {
-                            allowJs: true,
-                            noImplicitAny: true,
-                            strictNullChecks: true
-                        }
-                    }),
-                    "dev/configs/extendsArraySecond.json": JSON.stringify({
-                        compilerOptions: {
-                            module: "amd"
-                        },
-                        include: ["../supplemental.*"]
-                    }),
-                    "dev/configs/extendsArrayThird.json": JSON.stringify({
-                        compilerOptions: {
-                            module: null, // eslint-disable-line no-null/no-null
-                            noImplicitAny: false
-                        },
-                        extends: "./extendsArrayFirst",
-                        include: ["../supplemental.*"]
-                    }),
-                    "dev/configs/extendsArrayFourth.json": JSON.stringify({
-                        compilerOptions: {
-                            module: "system",
-                            strictNullChecks: false
-                        },
-                        include: null, // eslint-disable-line no-null/no-null
-                        files: ["../main.ts"]
-                    }),
-                    "dev/configs/extendsArrayFifth.json": JSON.stringify({
-                        extends: ["./extendsArrayFirst", "./extendsArraySecond", "./extendsArrayThird", "./extendsArrayFourth"],
-                        files: [],
-                    }),
-                    "dev/extendsArrayFails.json": JSON.stringify({
-                        extends: ["./missingFile"],
-                        compilerOptions: {
-                            types: []
-                        }
-                    }),
-                    "dev/extendsArrayFails2.json": JSON.stringify({ extends: [42] }),
+                "dev/configs/extendsArrayFirst.json": JSON.stringify({
+                    compilerOptions: {
+                        allowJs: true,
+                        noImplicitAny: true,
+                        strictNullChecks: true
+                    }
+                }),
+                "dev/configs/extendsArraySecond.json": JSON.stringify({
+                    compilerOptions: {
+                        module: "amd"
+                    },
+                    include: ["../supplemental.*"]
+                }),
+                "dev/configs/extendsArrayThird.json": JSON.stringify({
+                    compilerOptions: {
+                        module: null, // eslint-disable-line no-null/no-null
+                        noImplicitAny: false
+                    },
+                    extends: "./extendsArrayFirst",
+                    include: ["../supplemental.*"]
+                }),
+                "dev/configs/extendsArrayFourth.json": JSON.stringify({
+                    compilerOptions: {
+                        module: "system",
+                        strictNullChecks: false
+                    },
+                    include: null, // eslint-disable-line no-null/no-null
+                    files: ["../main.ts"]
+                }),
+                "dev/configs/extendsArrayFifth.json": JSON.stringify({
+                    extends: ["./extendsArrayFirst", "./extendsArraySecond", "./extendsArrayThird", "./extendsArrayFourth"],
+                    files: [],
+                }),
+                "dev/extendsArrayFails.json": JSON.stringify({
+                    extends: ["./missingFile"],
+                    compilerOptions: {
+                        types: []
+                    }
+                }),
+                "dev/extendsArrayFails2.json": JSON.stringify({ extends: [42] }),
             }
         }
     });
@@ -258,205 +260,78 @@ const caseInsensitiveHost = new fakes.ParseConfigHost(createFileSystem(/*ignoreC
 const caseSensitiveBasePath = "/dev/";
 const caseSensitiveHost = new fakes.ParseConfigHost(createFileSystem(/*ignoreCase*/ false, caseSensitiveBasePath, "/"));
 
-function verifyDiagnostics(actual: ts.Diagnostic[], expected: { code: number; messageText: string; }[]) {
-    assert.isTrue(expected.length === actual.length, `Expected error: ${JSON.stringify(expected)}. Actual error: ${JSON.stringify(actual)}.`);
-    for (let i = 0; i < actual.length; i++) {
-        const actualError = actual[i];
-        const expectedError = expected[i];
-        assert.equal(actualError.code, expectedError.code, "Error code mismatch");
-        assert.equal(actualError.category, ts.DiagnosticCategory.Error, "Category mismatch"); // Should always be error
-        assert.equal(ts.flattenDiagnosticMessageText(actualError.messageText, "\n"), expectedError.messageText);
-    }
-}
-
 describe("unittests:: config:: configurationExtension", () => {
     ts.forEach<[string, string, fakes.ParseConfigHost], void>([
         ["under a case insensitive host", caseInsensitiveBasePath, caseInsensitiveHost],
         ["under a case sensitive host", caseSensitiveBasePath, caseSensitiveHost]
     ], ([testName, basePath, host]) => {
-        function getParseCommandLine(entry: string) {
-            const {config, error} = ts.readConfigFile(entry, name => host.readFile(name));
-            assert(config && !error, ts.flattenDiagnosticMessageText(error && error.messageText, "\n"));
-            return ts.parseJsonConfigFileContent(config, host, basePath, {}, entry);
+        const nameAndEntry: [name: string, entry: string][] = [];
+        function baselineParsedCommandLine(name: string, entry: string) {
+            nameAndEntry.push([name, entry]);
         }
 
-        function getParseCommandLineJsonSourceFile(entry: string) {
-            const jsonSourceFile = ts.readJsonConfigFile(entry, name => host.readFile(name));
-            assert(jsonSourceFile.endOfFileToken && !jsonSourceFile.parseDiagnostics.length, ts.flattenDiagnosticMessageText(jsonSourceFile.parseDiagnostics[0] && jsonSourceFile.parseDiagnostics[0].messageText, "\n"));
-            return {
-                jsonSourceFile,
-                parsed: ts.parseJsonSourceFileConfigFileContent(jsonSourceFile, host, basePath, {}, entry)
-            };
-        }
+        baselineParsedCommandLine("can resolve an extension with a base extension", "tsconfig.json");
+        baselineParsedCommandLine("can resolve an extension with a base extension that overrides options", "tsconfig.nostrictnull.json");
+        baselineParsedCommandLine("can report errors on circular imports", "circular.json");
+        baselineParsedCommandLine("can report missing configurations", "missing.json");
+        baselineParsedCommandLine("can report errors in extended configs", "failure.json");
+        baselineParsedCommandLine("can error when 'extends' is not a string or Array", "extends.json");
+        baselineParsedCommandLine("can error when 'extends' is given an empty string", "extends3.json");
+        baselineParsedCommandLine("can error when 'extends' is given an empty string in an array", "extends4.json");
+        baselineParsedCommandLine("can overwrite compiler options using extended 'null'", "configs/third.json");
+        baselineParsedCommandLine("can overwrite top-level options using extended 'null'", "configs/fourth.json");
+        baselineParsedCommandLine("can overwrite top-level files using extended []", "configs/fifth.json");
+        baselineParsedCommandLine("can lookup via tsconfig field", "tsconfig.extendsBox.json");
+        baselineParsedCommandLine("can lookup via package-relative path", "tsconfig.extendsStrict.json");
+        baselineParsedCommandLine("can lookup via non-redirected-to package-relative path", "tsconfig.extendsUnStrict.json");
+        baselineParsedCommandLine("can lookup via package-relative path with extension", "tsconfig.extendsStrictExtension.json");
+        baselineParsedCommandLine("can lookup via an implicit tsconfig", "tsconfig.extendsBoxImplied.json");
+        baselineParsedCommandLine("can lookup via an implicit tsconfig in a package-relative directory", "tsconfig.extendsBoxImpliedUnstrict.json");
+        baselineParsedCommandLine("can lookup via an implicit tsconfig in a package-relative directory with name", "tsconfig.extendsBoxImpliedUnstrictExtension.json");
+        baselineParsedCommandLine("can lookup via an implicit tsconfig in a package-relative directory with extension", "tsconfig.extendsBoxImpliedPath.json");
+        baselineParsedCommandLine("can lookup via an package.json exports", "tsconfig.extendsFoo.json");
 
-        function testSuccess(name: string, entry: string, expected: ts.CompilerOptions, expectedFiles: string[]) {
-            expected.configFilePath = entry;
-            it(name, () => {
-                const parsed = getParseCommandLine(entry);
-                assert(!parsed.errors.length, ts.flattenDiagnosticMessageText(parsed.errors[0] && parsed.errors[0].messageText, "\n"));
-                assert.deepEqual(parsed.options, expected);
-                assert.deepEqual(parsed.fileNames, expectedFiles);
-            });
+        baselineExtendsSourceFile("adds extendedSourceFiles only once", "configs/fourth.json");
+        baselineExtendsSourceFile("adds extendedSourceFiles from an array only once", "configs/extendsArrayFifth.json");
 
-            it(name + " with jsonSourceFile", () => {
-                const { parsed, jsonSourceFile } = getParseCommandLineJsonSourceFile(entry);
-                assert(!parsed.errors.length, ts.flattenDiagnosticMessageText(parsed.errors[0] && parsed.errors[0].messageText, "\n"));
-                assert.deepEqual(parsed.options, expected);
-                assert.equal(parsed.options.configFile, jsonSourceFile);
-                assert.deepEqual(parsed.fileNames, expectedFiles);
-            });
-        }
+        baselineParsedCommandLine("can overwrite top-level compilerOptions", "configs/extendsArrayFifth.json");
+        baselineParsedCommandLine("can report missing configurations", "extendsArrayFails.json");
+        baselineParsedCommandLine("can error when 'extends' is not a string or Array2", "extendsArrayFails2.json");
 
-        function testFailure(name: string, entry: string, expectedDiagnostics: { code: number; messageText: string; }[]) {
-            it(name, () => {
-                const parsed = getParseCommandLine(entry);
-                verifyDiagnostics(parsed.errors, expectedDiagnostics);
-            });
-
-            it(name + " with jsonSourceFile", () => {
-                const { parsed } = getParseCommandLineJsonSourceFile(entry);
-                verifyDiagnostics(parsed.errors, expectedDiagnostics);
-            });
-        }
-
-        describe(testName, () => {
-            testSuccess("can resolve an extension with a base extension", "tsconfig.json", {
-                allowJs: true,
-                noImplicitAny: true,
-                strictNullChecks: true,
-            }, [
-                ts.combinePaths(basePath, "main.ts"),
-                ts.combinePaths(basePath, "supplemental.ts"),
-            ]);
-
-            testSuccess("can resolve an extension with a base extension that overrides options", "tsconfig.nostrictnull.json", {
-                allowJs: true,
-                noImplicitAny: true,
-                strictNullChecks: false,
-            }, [
-                ts.combinePaths(basePath, "main.ts"),
-                ts.combinePaths(basePath, "supplemental.ts"),
-            ]);
-
-            testFailure("can report errors on circular imports", "circular.json", [
-                {
-                    code: 18000,
-                    messageText: `Circularity detected while resolving configuration: ${[ts.combinePaths(basePath, "circular.json"), ts.combinePaths(basePath, "circular2.json"), ts.combinePaths(basePath, "circular.json")].join(" -> ")}`
-                }
-            ]);
-
-            testFailure("can report missing configurations", "missing.json", [{
-                code: 6053,
-                messageText: `File './missing2' not found.`
-            }]);
-
-            testFailure("can report errors in extended configs", "failure.json", [{
-                code: 6114,
-                messageText: `Unknown option 'excludes'. Did you mean 'exclude'?`
-            }]);
-
-            testFailure("can error when 'extends' is not a string or Array", "extends.json", [{
-                code: 5024,
-                messageText: `Compiler option 'extends' requires a value of type string or Array.`
-            }]);
-
-            testFailure("can error when 'extends' is given an empty string", "extends3.json", [{
-                code: 18051,
-                messageText: `Compiler option 'extends' cannot be given an empty string.`
-            }]);
-
-            testFailure("can error when 'extends' is given an empty string in an array", "extends4.json", [{
-                code: 18051,
-                messageText: `Compiler option 'extends' cannot be given an empty string.`
-            }]);
-
-            testSuccess("can overwrite compiler options using extended 'null'", "configs/third.json", {
-                allowJs: true,
-                noImplicitAny: true,
-                strictNullChecks: true,
-                module: undefined // Technically, this is distinct from the key never being set; but within the compiler we don't make the distinction
-            }, [
-                ts.combinePaths(basePath, "supplemental.ts")
-            ]);
-
-            testSuccess("can overwrite top-level options using extended 'null'", "configs/fourth.json", {
-                allowJs: true,
-                noImplicitAny: true,
-                strictNullChecks: true,
-                module: ts.ModuleKind.System
-            }, [
-                ts.combinePaths(basePath, "main.ts")
-            ]);
-
-            testSuccess("can overwrite top-level files using extended []", "configs/fifth.json", {
-                allowJs: true,
-                noImplicitAny: true,
-                strictNullChecks: true,
-                module: ts.ModuleKind.System
-            }, [
-                ts.combinePaths(basePath, "tests/utils.ts")
-            ]);
-
-            describe("finding extended configs from node_modules", () => {
-                testSuccess("can lookup via tsconfig field", "tsconfig.extendsBox.json", { strict: true }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via package-relative path", "tsconfig.extendsStrict.json", { strict: true }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via non-redirected-to package-relative path", "tsconfig.extendsUnStrict.json", { strict: false }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via package-relative path with extension", "tsconfig.extendsStrictExtension.json", { strict: true }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via an implicit tsconfig", "tsconfig.extendsBoxImplied.json", { strict: true }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via an implicit tsconfig in a package-relative directory", "tsconfig.extendsBoxImpliedUnstrict.json", { strict: false }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via an implicit tsconfig in a package-relative directory with name", "tsconfig.extendsBoxImpliedUnstrictExtension.json", { strict: false }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via an implicit tsconfig in a package-relative directory with extension", "tsconfig.extendsBoxImpliedPath.json", { strict: true }, [ts.combinePaths(basePath, "main.ts")]);
-                testSuccess("can lookup via an package.json exports", "tsconfig.extendsFoo.json", { strict: true }, [ts.combinePaths(basePath, "main.ts")]);
-            });
-
-            it("adds extendedSourceFiles only once", () => {
-                const sourceFile = ts.readJsonConfigFile("configs/fourth.json", (path) => host.readFile(path));
-                const dir = ts.combinePaths(basePath, "configs");
-                const expected = [
-                    ts.combinePaths(dir, "third.json"),
-                    ts.combinePaths(dir, "second.json"),
-                    ts.combinePaths(dir, "base.json"),
-                ];
-                ts.parseJsonSourceFileConfigFileContent(sourceFile, host, dir, {}, "fourth.json");
-                assert.deepEqual(sourceFile.extendedSourceFiles, expected);
-                ts.parseJsonSourceFileConfigFileContent(sourceFile, host, dir, {}, "fourth.json");
-                assert.deepEqual(sourceFile.extendedSourceFiles, expected);
-            });
+        baselineParseConfig({
+            scenario: "configurationExtension",
+            subScenario: testName,
+            input: () => nameAndEntry.map(([name, entry]) => ({
+                createHost: baseline => {
+                    baseline.push(name);
+                    return host;
+                },
+                jsonText: host.readFile(entry)!,
+                configFileName: entry,
+                baselineParsed: (baseline, parsed) => {
+                    baseline.push("CompilerOptions::");
+                    baseline.push(JSON.stringify(parsed.options, undefined, " "));
+                    baseline.push("FileNames::");
+                    baseline.push(parsed.fileNames.join());
+                },
+            })),
+            skipFs: true,
+            header: baseline => baselineParseConfigHost(baseline, host),
         });
 
-        describe(testName, () => {
-            it("adds extendedSourceFiles from an array only once", () => {
-                const sourceFile = ts.readJsonConfigFile("configs/extendsArrayFifth.json", (path) => host.readFile(path));
+        function baselineExtendsSourceFile(name: string, entry: string) {
+            it(name, () => {
+                const baseline: string[] = [];
+                baselineParseConfigHost(baseline, host);
+                baseline.push(`configFileName:: ${name}`);
+                const sourceFile = ts.readJsonConfigFile(entry, (path) => host.readFile(path));
                 const dir = ts.combinePaths(basePath, "configs");
-                const expected = [
-                    ts.combinePaths(dir, "extendsArrayFirst.json"),
-                    ts.combinePaths(dir, "extendsArraySecond.json"),
-                    ts.combinePaths(dir, "extendsArrayThird.json"),
-                    ts.combinePaths(dir, "extendsArrayFourth.json"),
-                ];
-                ts.parseJsonSourceFileConfigFileContent(sourceFile, host, dir, {}, "extendsArrayFifth.json");
-                assert.deepEqual(sourceFile.extendedSourceFiles, expected);
-                ts.parseJsonSourceFileConfigFileContent(sourceFile, host, dir, {}, "extendsArrayFifth.json");
-                assert.deepEqual(sourceFile.extendedSourceFiles, expected);
+                ts.parseJsonSourceFileConfigFileContent(sourceFile, host, dir, {}, ts.getBaseFileName(entry));
+                baseline.push("ExtendedSourceFiles::", ...sourceFile.extendedSourceFiles!);
+                ts.parseJsonSourceFileConfigFileContent(sourceFile, host, dir, {}, ts.getBaseFileName(entry));
+                baseline.push("After reusing sourceFile ExtendedSourceFiles::", ...sourceFile.extendedSourceFiles!);
+                Harness.Baseline.runBaseline(`config/configurationExtension/${name} ${testName}.js`, baseline.join("\n"));
             });
-
-            testSuccess("can overwrite top-level compilerOptions", "configs/extendsArrayFifth.json", {
-                allowJs: true,
-                noImplicitAny: false,
-                strictNullChecks: false,
-                module: ts.ModuleKind.System
-            }, []);
-
-            testFailure("can report missing configurations", "extendsArrayFails.json", [{
-                code: 6053,
-                messageText: `File './missingFile' not found.`
-            }]);
-
-            testFailure("can error when 'extends' is not a string or Array2", "extendsArrayFails2.json", [{
-                code: 5024,
-                messageText: `Compiler option 'extends' requires a value of type string.`
-            }]);
-        });
+        }
     });
 });
-
diff --git a/src/testRunner/unittests/config/convertCompilerOptionsFromJson.ts b/src/testRunner/unittests/config/convertCompilerOptionsFromJson.ts
index 1a994f0384a..d636d07c4e4 100644
--- a/src/testRunner/unittests/config/convertCompilerOptionsFromJson.ts
+++ b/src/testRunner/unittests/config/convertCompilerOptionsFromJson.ts
@@ -1,646 +1,228 @@
 import * as fakes from "../../_namespaces/fakes";
-import * as ts from "../../_namespaces/ts";
 import * as vfs from "../../_namespaces/vfs";
+import { baselineParseConfig } from "./helpers";
 
 describe("unittests:: config:: convertCompilerOptionsFromJson", () => {
-    const formatDiagnosticHost: ts.FormatDiagnosticsHost = {
-        getCurrentDirectory: () => "/apath/",
-        getCanonicalFileName: ts.createGetCanonicalFileName(/*useCaseSensitiveFileNames*/ true),
-        getNewLine: () => "\n"
-    };
-
-    interface ExpectedResultWithParsingSuccess {
-        compilerOptions: ts.CompilerOptions;
-        errors: readonly ts.Diagnostic[];
+    function baselineCompilerOptions(subScenario: string, json: any, configFileName: string) {
+        baselineCompilerOptionsJsonText(
+            subScenario,
+            JSON.stringify(json, undefined, " "),
+            configFileName,
+            /*skipJson*/ false,
+        );
     }
 
-    interface ExpectedResultWithParsingFailure {
-        compilerOptions: ts.CompilerOptions;
-        hasParseErrors: true;
-    }
-
-    type ExpectedResult = ExpectedResultWithParsingSuccess | ExpectedResultWithParsingFailure;
-
-    function isExpectedResultWithParsingFailure(expectedResult: ExpectedResult): expectedResult is ExpectedResultWithParsingFailure {
-        return !!(expectedResult as ExpectedResultWithParsingFailure).hasParseErrors;
-    }
-
-    function assertCompilerOptions(json: any, configFileName: string, expectedResult: ExpectedResultWithParsingSuccess) {
-        assertCompilerOptionsWithJson(json, configFileName, expectedResult);
-        assertCompilerOptionsWithJsonNode(json, configFileName, expectedResult);
-    }
-
-    function assertCompilerOptionsWithJson(json: any, configFileName: string, expectedResult: ExpectedResultWithParsingSuccess) {
-        const { options: actualCompilerOptions, errors: actualErrors } = ts.convertCompilerOptionsFromJson(json.compilerOptions, "/apath/", configFileName);
-
-        const parsedCompilerOptions = JSON.stringify(actualCompilerOptions);
-        const expectedCompilerOptions = JSON.stringify({ ...expectedResult.compilerOptions, configFilePath: configFileName });
-        assert.equal(parsedCompilerOptions, expectedCompilerOptions);
-
-        verifyErrors(actualErrors, expectedResult.errors, /*ignoreLocation*/ true);
-    }
-
-    function assertCompilerOptionsWithJsonNode(json: any, configFileName: string, expectedResult: ExpectedResultWithParsingSuccess) {
-        assertCompilerOptionsWithJsonText(JSON.stringify(json), configFileName, expectedResult);
-    }
-
-    function assertCompilerOptionsWithJsonText(fileText: string, configFileName: string, expectedResult: ExpectedResult) {
-        const result = ts.parseJsonText(configFileName, fileText);
-        assert(!!result.endOfFileToken);
-        assert.equal(!!result.parseDiagnostics.length, isExpectedResultWithParsingFailure(expectedResult));
-        const host: ts.ParseConfigHost = new fakes.ParseConfigHost(new vfs.FileSystem(/*ignoreCase*/ false, { cwd: "/apath/" }));
-        const { options: actualCompilerOptions, errors: actualParseErrors } = ts.parseJsonSourceFileConfigFileContent(result, host, "/apath/", /*existingOptions*/ undefined, configFileName);
-        expectedResult.compilerOptions.configFilePath = configFileName;
-
-        const parsedCompilerOptions = JSON.stringify(actualCompilerOptions);
-        const expectedCompilerOptions = JSON.stringify(expectedResult.compilerOptions);
-        assert.equal(parsedCompilerOptions, expectedCompilerOptions);
-        assert.equal(actualCompilerOptions.configFile, result);
-
-        if (!isExpectedResultWithParsingFailure(expectedResult)) {
-            verifyErrors(actualParseErrors.filter(error => error.code !== ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2.code), expectedResult.errors);
-        }
-    }
-
-    function verifyErrors(actualErrors: ts.Diagnostic[], expectedErrors: readonly ts.Diagnostic[], ignoreLocation?: boolean) {
-        assert.isTrue(expectedErrors.length === actualErrors.length, `Expected error: ${JSON.stringify(expectedErrors.map(getDiagnosticString), undefined, " ")}. Actual error: ${JSON.stringify(actualErrors.map(getDiagnosticString), undefined, " ")}.`);
-        for (let i = 0; i < actualErrors.length; i++) {
-            const actualError = actualErrors[i];
-            const expectedError = expectedErrors[i];
-
-            assert.equal(actualError.code, expectedError.code, `Expected error-code: ${JSON.stringify(expectedError.code)}. Actual error-code: ${JSON.stringify(actualError.code)}.`);
-            assert.equal(actualError.category, expectedError.category, `Expected error-category: ${JSON.stringify(expectedError.category)}. Actual error-category: ${JSON.stringify(actualError.category)}.`);
-            if (!ignoreLocation) {
-                assert(actualError.file);
-                assert.isDefined(actualError.start);
-                assert(actualError.length);
-            }
-        }
-
-        function getDiagnosticString(diagnostic: ts.Diagnostic) {
-            if (ignoreLocation) {
-                const { file, ...rest } = diagnostic;
-                diagnostic = { file: undefined, ...rest };
-            }
-            return ts.formatDiagnostic(diagnostic, formatDiagnosticHost);
-        }
+    function baselineCompilerOptionsJsonText(subScenario: string, jsonText: string, configFileName: string, skipJson = true) {
+        baselineParseConfig({
+            scenario: "convertCompilerOptionsFromJson",
+            subScenario,
+            input: () => [{
+                createHost: () => new fakes.ParseConfigHost(new vfs.FileSystem(
+                    /*ignoreCase*/ false,
+                    {
+                        cwd: "/apath/",
+                        files: {
+                            [`/apath/${configFileName}`]: jsonText,
+                            "/apath/a.ts": "",
+                            "/apath/b.js": "",
+                        }
+                    },
+                )),
+                jsonText,
+                configFileName,
+                basePath: "/apath",
+                baselineParsed: (baseline, parsed) => baseline.push("CompilerOptions::", JSON.stringify(parsed.options, undefined, " ")),
+            }],
+            skipJson,
+        });
     }
 
     // tsconfig.json tests
-    it("Convert correctly format tsconfig.json to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["es5", "es2015.core", "es2015.symbol"]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["lib.es5.d.ts", "lib.es2015.core.d.ts", "lib.es2015.symbol.d.ts"]
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert correctly format tsconfig.json to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            lib: ["es5", "es2015.core", "es2015.symbol"]
+        }
+    }, "tsconfig.json");
 
-    it("Convert correctly format tsconfig.json with allowJs is false to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    allowJs: false,
-                    lib: ["es5", "es2015.core", "es2015.symbol"]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    allowJs: false,
-                    lib: ["lib.es5.d.ts", "lib.es2015.core.d.ts", "lib.es2015.symbol.d.ts"]
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert correctly format tsconfig.json with allowJs is false to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            allowJs: false,
+            lib: ["es5", "es2015.core", "es2015.symbol"]
+        }
+    }, "tsconfig.json");
 
-    it("Convert incorrect option of jsx to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    jsx: ""
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--jsx' option must be: 'preserve', 'react-native', 'react'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrect option of jsx to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            jsx: ""
+        }
+    }, "tsconfig.json");
 
-    it("Convert incorrect option of module to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--module' option must be: 'none', 'commonjs', 'amd', 'system', 'umd', 'es6', 'es2015', 'es2020', 'es2022', 'esnext'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrect option of module to compiler-options", {
+        compilerOptions: {
+            module: "",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+        }
+    }, "tsconfig.json");
 
-    it("Convert incorrect option of newLine to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    newLine: "",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--newLine' option must be: 'crlf', 'lf'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrect option of newLine to compiler-options", {
+        compilerOptions: {
+            newLine: "",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+        }
+    }, "tsconfig.json");
 
-    it("Convert incorrect option of target to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    target: "",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    noImplicitAny: false,
-                    sourceMap: false,
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--target' option must be: 'es3', 'es5', 'es6', 'es2015', 'es2016', 'es2017', 'es2018', 'es2019', 'esnext'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrect option of target to compiler-options", {
+        compilerOptions: {
+            target: "",
+            noImplicitAny: false,
+            sourceMap: false,
+        }
+    }, "tsconfig.json");
 
-    it("Convert incorrect option of module-resolution to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    moduleResolution: "",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    noImplicitAny: false,
-                    sourceMap: false,
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--moduleResolution' option must be: 'node', 'classic'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrect option of module-resolution to compiler-options", {
+        compilerOptions: {
+            moduleResolution: "",
+            noImplicitAny: false,
+            sourceMap: false,
+        }
+    }, "tsconfig.json");
 
-    it("Convert incorrect option of libs to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["es5", "es2015.core", "incorrectLib"]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["lib.es5.d.ts", "lib.es2015.core.d.ts"]
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'esnext.array', 'esnext.symbol', 'esnext.intl', 'esnext.bigint', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrect option of libs to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            lib: ["es5", "es2015.core", "incorrectLib"]
+        }
+    }, "tsconfig.json");
 
-    it("Convert empty string option of libs to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["es5", ""]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["lib.es5.d.ts"]
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'esnext.array', 'esnext.symbol', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert empty string option of libs to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            lib: ["es5", ""]
+        }
+    }, "tsconfig.json");
 
-    it("Convert empty string option of libs to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: [""]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: []
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'esnext.array', 'esnext.symbol', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert empty string option of libs array to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            lib: [""]
+        }
+    }, "tsconfig.json");
 
-    it("Convert trailing-whitespace string option of libs to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["   "]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: []
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'esnext.array', 'esnext.symbol', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise'.",
-                    code: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.code,
-                    category: ts.Diagnostics.Argument_for_0_option_must_be_Colon_1.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert trailing-whitespace string option of libs to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            lib: ["   "]
+        }
+    }, "tsconfig.json");
 
-    it("Convert empty option of libs to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: []
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: []
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert empty option of libs to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            lib: []
+        }
+    }, "tsconfig.json");
 
-    it("Convert empty string option of moduleSuffixes to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    moduleSuffixes: [".ios", ""]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    moduleSuffixes: [".ios", ""]
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert empty string option of moduleSuffixes to compiler-options", {
+        compilerOptions: {
+            moduleSuffixes: [".ios", ""]
+        }
+    }, "tsconfig.json");
 
-    it("Convert empty string option of moduleSuffixes to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    moduleSuffixes: [""]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    moduleSuffixes: [""]
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert empty string option of moduleSuffixes single to compiler-options", {
+        compilerOptions: {
+            moduleSuffixes: [""]
+        }
+    }, "tsconfig.json");
 
-    it("Convert trailing-whitespace string option of moduleSuffixes to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    moduleSuffixes: ["   "]
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    moduleSuffixes: ["   "]
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert trailing-whitespace string option of moduleSuffixes to compiler-options", {
+        compilerOptions: {
+            moduleSuffixes: ["   "]
+        }
+    }, "tsconfig.json");
 
-    it("Convert empty option of moduleSuffixes to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    moduleSuffixes: []
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    moduleSuffixes: []
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert empty option of moduleSuffixes to compiler-options", {
+        compilerOptions: {
+            moduleSuffixes: []
+        }
+    }, "tsconfig.json");
 
-    it("Convert incorrectly format tsconfig.json to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    modu: "commonjs",
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {},
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Unknown compiler option 'modu'.",
-                    code: ts.Diagnostics.Unknown_compiler_option_0.code,
-                    category: ts.Diagnostics.Unknown_compiler_option_0.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrectly format tsconfig.json to compiler-options", {
+        compilerOptions: {
+            modu: "commonjs",
+        }
+    }, "tsconfig.json");
 
-    it("Convert default tsconfig.json to compiler-options ", () => {
-        assertCompilerOptions({}, "tsconfig.json",
-            {
-                compilerOptions: {},
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert default tsconfig.json to compiler-options", {}, "tsconfig.json");
 
-    it("Convert negative numbers in tsconfig.json ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    allowJs: true,
-                    maxNodeModuleJsDepth: -1
-                }
-            }, "tsconfig.json",
-            {
-                compilerOptions: {
-                    allowJs: true,
-                    maxNodeModuleJsDepth: -1
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert negative numbers in tsconfig.json", {
+        compilerOptions: {
+            allowJs: true,
+            maxNodeModuleJsDepth: -1
+        }
+    }, "tsconfig.json");
 
     // jsconfig.json
-    it("Convert correctly format jsconfig.json to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["es5", "es2015.core", "es2015.symbol"]
-                }
-            }, "jsconfig.json",
-            {
-                compilerOptions: {
-                    allowJs: true,
-                    maxNodeModuleJsDepth: 2,
-                    allowSyntheticDefaultImports: true,
-                    skipLibCheck: true,
-                    noEmit: true,
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["lib.es5.d.ts", "lib.es2015.core.d.ts", "lib.es2015.symbol.d.ts"]
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert correctly format jsconfig.json to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            lib: ["es5", "es2015.core", "es2015.symbol"]
+        }
+    }, "jsconfig.json");
 
-    it("Convert correctly format jsconfig.json with allowJs is false to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    module: "commonjs",
-                    target: "es5",
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    allowJs: false,
-                    lib: ["es5", "es2015.core", "es2015.symbol"]
-                }
-            }, "jsconfig.json",
-            {
-                compilerOptions: {
-                    allowJs: false,
-                    maxNodeModuleJsDepth: 2,
-                    allowSyntheticDefaultImports: true,
-                    skipLibCheck: true,
-                    noEmit: true,
-                    module: ts.ModuleKind.CommonJS,
-                    target: ts.ScriptTarget.ES5,
-                    noImplicitAny: false,
-                    sourceMap: false,
-                    lib: ["lib.es5.d.ts", "lib.es2015.core.d.ts", "lib.es2015.symbol.d.ts"]
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert correctly format jsconfig.json with allowJs is false to compiler-options", {
+        compilerOptions: {
+            module: "commonjs",
+            target: "es5",
+            noImplicitAny: false,
+            sourceMap: false,
+            allowJs: false,
+            lib: ["es5", "es2015.core", "es2015.symbol"]
+        }
+    }, "jsconfig.json");
 
-    it("Convert incorrectly format jsconfig.json to compiler-options ", () => {
-        assertCompilerOptions(
-            {
-                compilerOptions: {
-                    modu: "commonjs",
-                }
-            }, "jsconfig.json",
-            {
-                compilerOptions:
-                {
-                    allowJs: true,
-                    maxNodeModuleJsDepth: 2,
-                    allowSyntheticDefaultImports: true,
-                    skipLibCheck: true,
-                    noEmit: true
-                },
-                errors: [{
-                    file: undefined,
-                    start: 0,
-                    length: 0,
-                    messageText: "Unknown compiler option 'modu'.",
-                    code: ts.Diagnostics.Unknown_compiler_option_0.code,
-                    category: ts.Diagnostics.Unknown_compiler_option_0.category
-                }]
-            }
-        );
-    });
+    baselineCompilerOptions("Convert incorrectly format jsconfig.json to compiler-options", {
+        compilerOptions: {
+            modu: "commonjs",
+        }
+    }, "jsconfig.json");
 
-    it("Convert default jsconfig.json to compiler-options ", () => {
-        assertCompilerOptions({}, "jsconfig.json",
-            {
-                compilerOptions:
-                {
-                    allowJs: true,
-                    maxNodeModuleJsDepth: 2,
-                    allowSyntheticDefaultImports: true,
-                    skipLibCheck: true,
-                    noEmit: true
-                },
-                errors: []
-            }
-        );
-    });
+    baselineCompilerOptions("Convert default jsconfig.json to compiler-options", {}, "jsconfig.json");
 
-    it("Convert tsconfig options when there are multiple invalid strings", () => {
-        assertCompilerOptionsWithJsonText(`{
+    baselineCompilerOptionsJsonText("Convert tsconfig options when there are multiple invalid strings", `{
   "compilerOptions": {
     "target": "<%- options.useTsWithBabel ? 'esnext' : 'es5' %>",
     "module": "esnext",
@@ -660,122 +242,43 @@ describe("unittests:: config:: convertCompilerOptionsFromJson", () => {
   }
 }
 `,
-        "tsconfig.json",
-        {
-            compilerOptions: {
-                target: undefined,
-                module: ts.ModuleKind.ESNext,
-                experimentalDecorators: true,
-            },
-            hasParseErrors: true
-        });
-    });
+        "tsconfig.json");
 
-    it("Convert a tsconfig file with stray trailing characters", () => {
-        assertCompilerOptionsWithJsonText(`{
-                "compilerOptions": {
-                    "target": "esnext"
-                }
-            } blah`, "tsconfig.json", {
-            compilerOptions: {
-                target: ts.ScriptTarget.ESNext
-            },
-            hasParseErrors: true,
-            errors: [{
-                ...ts.Diagnostics.The_root_value_of_a_0_file_must_be_an_object,
-                messageText: "The root value of a 'tsconfig.json' file must be an object.",
-                file: undefined,
-                start: 0,
-                length: 0
-            }]
-        });
-    });
+    baselineCompilerOptionsJsonText("Convert a tsconfig file with stray trailing characters",
+        `{
+            "compilerOptions": {
+                "target": "esnext"
+            }
+        } blah`, "tsconfig.json");
 
-    it("Convert a tsconfig file with stray leading characters", () => {
-        assertCompilerOptionsWithJsonText(`blah {
-                "compilerOptions": {
-                    "target": "esnext"
-                }
-            }`, "tsconfig.json", {
-            compilerOptions: {
-                target: ts.ScriptTarget.ESNext
-            },
-            hasParseErrors: true,
-            errors: [{
-                ...ts.Diagnostics.The_root_value_of_a_0_file_must_be_an_object,
-                messageText: "The root value of a 'tsconfig.json' file must be an object.",
-                file: undefined,
-                start: 0,
-                length: 0
-            }]
-        });
-    });
+    baselineCompilerOptionsJsonText("Convert a tsconfig file with stray leading characters",
+        `blah {
+            "compilerOptions": {
+                "target": "esnext"
+            }
+        }`, "tsconfig.json");
 
-    it("Convert a tsconfig file as an array", () => {
-        assertCompilerOptionsWithJsonText(`[{
-                "compilerOptions": {
-                    "target": "esnext"
-                }
-            }]`, "tsconfig.json", {
-            compilerOptions: {
-                target: ts.ScriptTarget.ESNext
-            },
-            errors: [{
-                ...ts.Diagnostics.The_root_value_of_a_0_file_must_be_an_object,
-                messageText: "The root value of a 'tsconfig.json' file must be an object.",
-                file: undefined,
-                start: 0,
-                length: 0
-            }]
-        });
-    });
+    baselineCompilerOptionsJsonText("Convert a tsconfig file as an array",
+        `[{
+            "compilerOptions": {
+                "target": "esnext"
+            }
+        }]`, "tsconfig.json");
 
-    it("raises an error if you've set a compiler flag in the root without including 'compilerOptions'", () => {
-        assertCompilerOptionsWithJsonText(`{
-                "module": "esnext",
-            }`, "tsconfig.json", {
-            compilerOptions: {},
-            errors: [{
-                ...ts.Diagnostics._0_should_be_set_inside_the_compilerOptions_object_of_the_config_json_file,
-                messageText: "'module' should be set inside the 'compilerOptions' object of the config json file.",
-                file: undefined,
-                start: 0,
-                length: 0
-            }]
-        });
-    });
+    baselineCompilerOptionsJsonText("raises an error if you've set a compiler flag in the root without including compilerOptions",
+        `{
+            "module": "esnext",
+        }`, "tsconfig.json");
 
-    it("does not raise an error if you've set a compiler flag in the root when you have included 'compilerOptions'", () => {
-        assertCompilerOptionsWithJsonText(`{
-                "target": "esnext",
-                "compilerOptions": {
-                    "module": "esnext"
-                }
-            }`, "tsconfig.json", {
-            compilerOptions: {
-                module: ts.ModuleKind.ESNext
-            },
-            errors: []
-        });
-    });
+    baselineCompilerOptionsJsonText("does not raise an error if you've set a compiler flag in the root when you have included 'compilerOptions'",
+        `{
+            "target": "esnext",
+            "compilerOptions": {
+                "module": "esnext"
+            }
+        }`, "tsconfig.json");
 
-    it("Don't crash when root expression is not object at all", () => {
-        assertCompilerOptionsWithJsonText(`42`, "tsconfig.json", {
-            compilerOptions: {},
-            errors: [{
-                ...ts.Diagnostics.The_root_value_of_a_0_file_must_be_an_object,
-                messageText: "The root value of a 'tsconfig.json' file must be an object.",
-                file: undefined,
-                start: 0,
-                length: 0
-            }]
-        });
-    });
+    baselineCompilerOptionsJsonText("Don't crash when root expression is not object at all", `42`, "tsconfig.json");
 
-    it("Allow trailing comments", () => {
-        assertCompilerOptionsWithJsonText(`{} // no options`, "tsconfig.json", {
-            compilerOptions: {},
-            errors: []
-        });
-    });
+    baselineCompilerOptionsJsonText("Allow trailing comments", `{} // no options`, "tsconfig.json");
 });
diff --git a/src/testRunner/unittests/config/convertTypeAcquisitionFromJson.ts b/src/testRunner/unittests/config/convertTypeAcquisitionFromJson.ts
index 8fa6758774b..f506eab0890 100644
--- a/src/testRunner/unittests/config/convertTypeAcquisitionFromJson.ts
+++ b/src/testRunner/unittests/config/convertTypeAcquisitionFromJson.ts
@@ -1,217 +1,96 @@
 import * as fakes from "../../_namespaces/fakes";
-import * as ts from "../../_namespaces/ts";
 import * as vfs from "../../_namespaces/vfs";
+import { baselineParseConfig } from "./helpers";
 
-interface ExpectedResult { typeAcquisition: ts.TypeAcquisition; errors: ts.Diagnostic[]; }
 describe("unittests:: config:: convertTypeAcquisitionFromJson", () => {
-    function assertTypeAcquisition(json: any, configFileName: string, expectedResult: ExpectedResult) {
-        assertTypeAcquisitionWithJson(json, configFileName, expectedResult);
-        assertTypeAcquisitionWithJsonNode(json, configFileName, expectedResult);
-    }
-
-    function verifyAcquisition(actualTypeAcquisition: ts.TypeAcquisition | undefined, expectedResult: ExpectedResult) {
-        const parsedTypeAcquisition = JSON.stringify(actualTypeAcquisition);
-        const expectedTypeAcquisition = JSON.stringify(expectedResult.typeAcquisition);
-        assert.equal(parsedTypeAcquisition, expectedTypeAcquisition);
-    }
-
-    function verifyErrors(actualErrors: ts.Diagnostic[], expectedResult: ExpectedResult, hasLocation?: boolean) {
-        const expectedErrors = expectedResult.errors;
-        assert.isTrue(expectedResult.errors.length === actualErrors.length, `Expected error: ${JSON.stringify(expectedResult.errors)}. Actual error: ${JSON.stringify(actualErrors)}.`);
-        for (let i = 0; i < actualErrors.length; i++) {
-            const actualError = actualErrors[i];
-            const expectedError = expectedErrors[i];
-            assert.equal(actualError.code, expectedError.code, `Expected error-code: ${JSON.stringify(expectedError.code)}. Actual error-code: ${JSON.stringify(actualError.code)}.`);
-            assert.equal(actualError.category, expectedError.category, `Expected error-category: ${JSON.stringify(expectedError.category)}. Actual error-category: ${JSON.stringify(actualError.category)}.`);
-            if (hasLocation) {
-                assert(actualError.file);
-                assert(actualError.start);
-                assert(actualError.length);
-            }
-        }
-    }
-
-    function assertTypeAcquisitionWithJson(json: any, configFileName: string, expectedResult: ExpectedResult) {
-        const jsonOptions = json.typeAcquisition;
-        const { options: actualTypeAcquisition, errors: actualErrors } = ts.convertTypeAcquisitionFromJson(jsonOptions, "/apath/", configFileName);
-        verifyAcquisition(actualTypeAcquisition, expectedResult);
-        verifyErrors(actualErrors, expectedResult);
-    }
-
-    function assertTypeAcquisitionWithJsonNode(json: any, configFileName: string, expectedResult: ExpectedResult) {
-        const fileText = JSON.stringify(json);
-        const result = ts.parseJsonText(configFileName, fileText);
-        assert(!result.parseDiagnostics.length);
-        assert(!!result.endOfFileToken);
-        const host: ts.ParseConfigHost = new fakes.ParseConfigHost(new vfs.FileSystem(/*ignoreCase*/ false, { cwd: "/apath/" }));
-        const { typeAcquisition: actualTypeAcquisition, errors: actualParseErrors } = ts.parseJsonSourceFileConfigFileContent(result, host, "/apath/", /*existingOptions*/ undefined, configFileName);
-        verifyAcquisition(actualTypeAcquisition, expectedResult);
-
-        const actualErrors = ts.filter(actualParseErrors, error => error.code !== ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2.code);
-        verifyErrors(actualErrors, expectedResult, /*hasLocation*/ true);
-    }
-
-    it("Convert correctly format tsconfig.json to typeAcquisition ", () => {
-        assertTypeAcquisition(
-            {
-                typeAcquisition:
-                {
-                    enable: true,
-                    include: ["0.d.ts", "1.d.ts"],
-                    exclude: ["0.js", "1.js"]
-                }
+    function baselineTypeAcquisition(subScenario: string, json: any, configFileName: string) {
+        baselineParseConfig({
+            scenario: "convertTypeAcquisitionFromJson",
+            subScenario,
+            input: () => {
+                const jsonText = JSON.stringify(json, undefined, " ");
+                return [{
+                    createHost: () => new fakes.ParseConfigHost(new vfs.FileSystem(
+                        /*ignoreCase*/ false,
+                        {
+                            cwd: "/apath/",
+                            files: {
+                                [`/apath/${configFileName}`]: jsonText,
+                                "/apath/a.ts": "",
+                                "/apath/b.js": "",
+                            }
+                        },
+                    )),
+                    jsonText,
+                    configFileName,
+                    basePath: "/apath",
+                    baselineParsed: (baseline, parsed) => baseline.push("TypeAcquisition::", JSON.stringify(parsed.typeAcquisition, undefined, " ")),
+                }];
             },
-            "tsconfig.json",
-            {
-                typeAcquisition:
-                {
-                    enable: true,
-                    include: ["0.d.ts", "1.d.ts"],
-                    exclude: ["0.js", "1.js"]
-                },
-                errors: [] as ts.Diagnostic[]
-            });
-    });
+        });
+    }
 
-    it("Convert incorrect format tsconfig.json to typeAcquisition ", () => {
-        assertTypeAcquisition(
+    baselineTypeAcquisition("Convert correctly format tsconfig.json to typeAcquisition ",
+        {
+            typeAcquisition:
             {
-                typeAcquisition:
-                {
-                    enableAutoDiscovy: true,
-                }
-            }, "tsconfig.json",
-            {
-                typeAcquisition:
-                {
-                    enable: false,
-                    include: [],
-                    exclude: []
-                },
-                errors: [
-                    {
-                        category: ts.Diagnostics.Unknown_type_acquisition_option_0.category,
-                        code: ts.Diagnostics.Unknown_type_acquisition_option_0.code,
-                        file: undefined,
-                        start: 0,
-                        length: 0,
-                        messageText: undefined!, // TODO: GH#18217
-                    }
-                ]
-            });
-    });
+                enable: true,
+                include: ["0.d.ts", "1.d.ts"],
+                exclude: ["0.js", "1.js"]
+            }
+        },
+        "tsconfig.json"
+    );
 
-    it("Convert default tsconfig.json to typeAcquisition ", () => {
-        assertTypeAcquisition({}, "tsconfig.json",
+    baselineTypeAcquisition("Convert incorrect format tsconfig.json to typeAcquisition ",
+        {
+            typeAcquisition:
             {
-                typeAcquisition:
-                {
-                    enable: false,
-                    include: [],
-                    exclude: []
-                },
-                errors: [] as ts.Diagnostic[]
-            });
-    });
+                enableAutoDiscovy: true,
+            }
+        }, "tsconfig.json",
+    );
 
-    it("Convert tsconfig.json with only enable property to typeAcquisition ", () => {
-        assertTypeAcquisition(
+    baselineTypeAcquisition("Convert default tsconfig.json to typeAcquisition ", {}, "tsconfig.json");
+
+    baselineTypeAcquisition("Convert tsconfig.json with only enable property to typeAcquisition ",
+        {
+            typeAcquisition:
             {
-                typeAcquisition:
-                {
-                    enable: true
-                }
-            }, "tsconfig.json",
-            {
-                typeAcquisition:
-                {
-                    enable: true,
-                    include: [],
-                    exclude: []
-                },
-                errors: [] as ts.Diagnostic[]
-            });
-    });
+                enable: true
+            }
+        }, "tsconfig.json",
+    );
 
     // jsconfig.json
-    it("Convert jsconfig.json to typeAcquisition ", () => {
-        assertTypeAcquisition(
+    baselineTypeAcquisition("Convert jsconfig.json to typeAcquisition ",
+        {
+            typeAcquisition:
             {
-                typeAcquisition:
-                {
-                    enable: false,
-                    include: ["0.d.ts"],
-                    exclude: ["0.js"]
-                }
-            }, "jsconfig.json",
-            {
-                typeAcquisition:
-                {
-                    enable: false,
-                    include: ["0.d.ts"],
-                    exclude: ["0.js"]
-                },
-                errors: [] as ts.Diagnostic[]
-            });
-    });
+                enable: false,
+                include: ["0.d.ts"],
+                exclude: ["0.js"]
+            }
+        }, "jsconfig.json",
+    );
 
-    it("Convert default jsconfig.json to typeAcquisition ", () => {
-        assertTypeAcquisition({ }, "jsconfig.json",
-            {
-                typeAcquisition:
-                {
-                    enable: true,
-                    include: [],
-                    exclude: []
-                },
-                errors: [] as ts.Diagnostic[]
-            });
-    });
+    baselineTypeAcquisition("Convert default jsconfig.json to typeAcquisition ", {}, "jsconfig.json");
 
-    it("Convert incorrect format jsconfig.json to typeAcquisition ", () => {
-        assertTypeAcquisition(
+    baselineTypeAcquisition("Convert incorrect format jsconfig.json to typeAcquisition ",
+        {
+            typeAcquisition:
             {
-                typeAcquisition:
-                {
-                    enableAutoDiscovy: true,
-                }
-            }, "jsconfig.json",
-            {
-                typeAcquisition:
-                {
-                    enable: true,
-                    include: [],
-                    exclude: []
-                },
-                errors: [
-                    {
-                        category: ts.Diagnostics.Unknown_type_acquisition_option_0.category,
-                        code: ts.Diagnostics.Unknown_type_acquisition_option_0.code,
-                        file: undefined,
-                        start: 0,
-                        length: 0,
-                        messageText: undefined!, // TODO: GH#18217
-                    }
-                ]
-            });
-    });
+                enableAutoDiscovy: true,
+            }
+        }, "jsconfig.json",
+    );
 
-    it("Convert jsconfig.json with only enable property to typeAcquisition ", () => {
-        assertTypeAcquisition(
+    baselineTypeAcquisition("Convert jsconfig.json with only enable property to typeAcquisition ",
+        {
+            typeAcquisition:
             {
-                typeAcquisition:
-                {
-                    enable: false
-                }
-            }, "jsconfig.json",
-            {
-                typeAcquisition:
-                {
-                    enable: false,
-                    include: [],
-                    exclude: []
-                },
-                errors: [] as ts.Diagnostic[]
-            });
-    });
+                enable: false
+            }
+        }, "jsconfig.json",
+    );
 });
diff --git a/src/testRunner/unittests/config/helpers.ts b/src/testRunner/unittests/config/helpers.ts
new file mode 100644
index 00000000000..8c754e92e63
--- /dev/null
+++ b/src/testRunner/unittests/config/helpers.ts
@@ -0,0 +1,105 @@
+import * as fakes from "../../_namespaces/fakes";
+import * as Harness from "../../_namespaces/Harness";
+import * as ts from "../../_namespaces/ts";
+import * as vfs from "../../_namespaces/vfs";
+
+function getParsedCommandJson(
+    jsonText: string,
+    configFileName: string,
+    host: fakes.ParseConfigHost,
+    basePath: string | undefined,
+    existingOptions: ts.CompilerOptions | undefined,
+    existingWatchOptions: ts.WatchOptions | undefined,
+) {
+    const parsed = ts.parseConfigFileTextToJson(configFileName, jsonText);
+    return ts.parseJsonConfigFileContent(
+        parsed.config,
+        host,
+        basePath ?? host.sys.getCurrentDirectory(),
+        existingOptions,
+        configFileName,
+        /*resolutionStack*/ undefined,
+        /*extraFileExtensions*/ undefined,
+        /*extendedConfigCache*/ undefined,
+        existingWatchOptions,
+    );
+}
+
+function getParsedCommandJsonSourceFile(
+    jsonText: string,
+    configFileName: string,
+    host: fakes.ParseConfigHost,
+    basePath: string | undefined,
+    existingOptions: ts.CompilerOptions | undefined,
+    existingWatchOptions: ts.WatchOptions | undefined,
+) {
+    const parsed = ts.parseJsonText(configFileName, jsonText);
+    return ts.parseJsonSourceFileConfigFileContent(
+        parsed,
+        host,
+        basePath ?? host.sys.getCurrentDirectory(),
+        existingOptions,
+        configFileName,
+        /*resolutionStack*/ undefined,
+        /*extraFileExtensions*/ undefined,
+        /*extendedConfigCache*/ undefined,
+        existingWatchOptions,
+    );
+}
+
+export interface ParseConfigInput {
+    createHost: (baseline: string[]) => fakes.ParseConfigHost;
+    jsonText: string;
+    configFileName: string;
+    basePath?: string,
+    existingOptions?: ts.CompilerOptions;
+    existingWatchOptions?: ts.WatchOptions;
+    baselineParsed(baseline: string[], parsed: ts.ParsedCommandLine): void;
+}
+export interface BaselineParseConfigInput {
+    scenario: string;
+    subScenario: string;
+    input(): ParseConfigInput[];
+    skipJson?: boolean;
+    skipErrors?: boolean;
+    skipFs?: boolean;
+    header?(baseline: string[]): void;
+}
+export function baselineParseConfig(input: BaselineParseConfigInput) {
+    if (!input.skipJson) baselineParseConfigWith("with json api", getParsedCommandJson, input);
+    baselineParseConfigWith("with jsonSourceFile api", getParsedCommandJsonSourceFile, input);
+}
+
+export function baselineParseConfigHost(baseline: string[], host: fakes.ParseConfigHost) {
+    baseline.push("Fs::", vfs.formatPatch(host.sys.vfs.diff(/*base*/ undefined, { baseIsNotShadowRoot: true })!));
+}
+
+function baselineParseConfigWith(
+    jsonTest: string,
+    getParsed: typeof getParsedCommandJson,
+    { scenario, subScenario, input, skipErrors, skipFs, header }: BaselineParseConfigInput,
+) {
+    describe(subScenario, () => {
+        it(jsonTest, () => {
+            const baseline: string[] = [];
+            header?.(baseline);
+            for (const { createHost, jsonText, configFileName, existingOptions, basePath, existingWatchOptions, baselineParsed } of input()) {
+                const host = createHost(baseline);
+                if (!skipFs) baselineParseConfigHost(baseline, host);
+                baseline.push(`configFileName:: ${configFileName}`);
+                const parsed = getParsed(jsonText, configFileName, host, basePath, existingOptions, existingWatchOptions);
+                baselineParsed(baseline, parsed);
+                if (!skipErrors) {
+                    baseline.push("Errors::");
+                    baseline.push(ts.formatDiagnosticsWithColorAndContext(parsed.errors, {
+                        getCurrentDirectory: () => basePath || host.sys.getCurrentDirectory(),
+                        getCanonicalFileName: ts.createGetCanonicalFileName(host.useCaseSensitiveFileNames),
+                        getNewLine: () => host.sys.newLine,
+                    }));
+                }
+                baseline.push("");
+            }
+            Harness.Baseline.runBaseline(`config/${scenario}/${subScenario} ${jsonTest}.js`, baseline.join("\n"));
+        });
+    });
+}
\ No newline at end of file
diff --git a/src/testRunner/unittests/config/matchFiles.ts b/src/testRunner/unittests/config/matchFiles.ts
index a7ecae04252..33c21ff2410 100644
--- a/src/testRunner/unittests/config/matchFiles.ts
+++ b/src/testRunner/unittests/config/matchFiles.ts
@@ -1,6 +1,7 @@
 import * as fakes from "../../_namespaces/fakes";
 import * as ts from "../../_namespaces/ts";
 import * as vfs from "../../_namespaces/vfs";
+import { baselineParseConfig } from "./helpers";
 
 const caseInsensitiveBasePath = "c:/dev/";
 const caseInsensitiveTsconfigPath = "c:/dev/tsconfig.json";
@@ -103,1421 +104,488 @@ const caseSensitiveOrderingDiffersWithCaseHost = new fakes.ParseConfigHost(new v
     "/dev/zebra.ts": "",
 }}));
 
-function assertParsed(actual: ts.ParsedCommandLine, expected: ts.ParsedCommandLine): void {
-    assert.deepEqual(actual.fileNames, expected.fileNames);
-    assert.deepEqual(actual.wildcardDirectories, expected.wildcardDirectories);
-    assert.deepEqual(actual.errors, expected.errors);
-}
-
-function validateMatches(expected: ts.ParsedCommandLine, json: any, host: ts.ParseConfigHost, basePath: string, existingOptions?: ts.CompilerOptions, configFileName?: string, resolutionStack?: ts.Path[]) {
-    {
-        const jsonText = JSON.stringify(json);
-        const result = ts.parseJsonText(caseInsensitiveTsconfigPath, jsonText);
-        const actual = ts.parseJsonSourceFileConfigFileContent(result, host, basePath, existingOptions, configFileName, resolutionStack);
-        for (const error of expected.errors) {
-            if (error.file) {
-                error.file = result;
+function baselineMatches(subScenario: string, json: any, host: fakes.ParseConfigHost, basePath: string) {
+    const jsonText = JSON.stringify(json, undefined, " ");
+    baselineParseConfig({
+        scenario: "matchFiles",
+        subScenario,
+        input: () => [{
+            createHost: () => host,
+            jsonText,
+            configFileName: caseInsensitiveTsconfigPath,
+            basePath,
+            baselineParsed: (baseline, parsed) => {
+                const wildcardDirectories = parsed.wildcardDirectories ? {} as ts.MapLike<string> : undefined;
+                if (parsed.wildcardDirectories) ts.getOwnKeys(parsed.wildcardDirectories).forEach(dir => wildcardDirectories![dir] = `WatchDirectoryFlags.${(ts as any).WatchDirectoryFlags[parsed.wildcardDirectories![dir]]}`);
+                baseline.push("Result", JSON.stringify({
+                    ...parsed,
+                    errors: undefined,
+                    wildcardDirectories,
+                }, undefined, " "));
             }
-        }
-        assertParsed(actual, expected);
-    }
-    {
-        const actual = ts.parseJsonConfigFileContent(json, host, basePath, existingOptions, configFileName, resolutionStack);
-        expected.errors = expected.errors.map((error): ts.Diagnostic => ({
-            category: error.category,
-            code: error.code,
-            file: undefined,
-            length: undefined,
-            messageText: error.messageText,
-            start: undefined,
-            reportsUnnecessary: undefined,
-            reportsDeprecated: undefined
-        }));
-        assertParsed(actual, expected);
-    }
-}
-
-function createDiagnosticForConfigFile(json: any, start: number, length: number, diagnosticMessage: ts.DiagnosticMessage, arg0: string) {
-    const text = JSON.stringify(json);
-    const file = {
-        fileName: caseInsensitiveTsconfigPath,
-        kind: ts.SyntaxKind.SourceFile,
-        text
-    } as ts.SourceFile;
-    return ts.createFileDiagnostic(file, start, length, diagnosticMessage, arg0);
+        }],
+        header: baseline => baseline.push("config:", jsonText),
+    });
 }
 
 describe("unittests:: config:: matchFiles", () => {
-    it("with defaults", () => {
-        const json = {};
-        const expected: ts.ParsedCommandLine = {
-            options: {},
-            errors: [],
-            fileNames: [
-                "c:/dev/a.ts",
-                "c:/dev/b.ts",
-                "c:/dev/x/a.ts"
-            ],
-            wildcardDirectories: {
-                "c:/dev": ts.WatchDirectoryFlags.Recursive
-            },
-        };
-        validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-    });
-
+    baselineMatches("with defaults", {}, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
     describe("with literal file list", () => {
-        it("without exclusions", () => {
-            const json = {
-                files: [
-                    "a.ts",
-                    "b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("missing files are still present", () => {
-            const json = {
-                files: [
-                    "z.ts",
-                    "x.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/z.ts",
-                    "c:/dev/x.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("are not removed due to excludes", () => {
-            const json = {
-                files: [
-                    "a.ts",
-                    "b.ts"
-                ],
-                exclude: [
-                    "b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
+        baselineMatches("without exclusions with literal file list", {
+            files: [
+                "a.ts",
+                "b.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("missing files are still present", {
+            files: [
+                "z.ts",
+                "x.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("are not removed due to excludes", {
+            files: [
+                "a.ts",
+                "b.ts"
+            ],
+            exclude: [
+                "b.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
     });
 
     describe("with literal include list", () => {
-        it("without exclusions", () => {
-            const json = {
-                include: [
-                    "a.ts",
-                    "b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("with non .ts file extensions are excluded", () => {
-            const json = {
-                include: [
-                    "a.js",
-                    "b.js"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [
-                    ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                        caseInsensitiveTsconfigPath, JSON.stringify(json.include), "[]")
-                ],
-                fileNames: [],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-        });
-        it("with missing files are excluded", () => {
-            const json = {
-                include: [
-                    "z.ts",
-                    "x.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [
-                    ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                        caseInsensitiveTsconfigPath, JSON.stringify(json.include), "[]")
-                ],
-                fileNames: [],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-        });
-        it("with literal excludes", () => {
-            const json = {
-                include: [
-                    "a.ts",
-                    "b.ts"
-                ],
-                exclude: [
-                    "b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("with wildcard excludes", () => {
-            const json = {
-                include: [
-                    "a.ts",
-                    "b.ts",
-                    "z/a.ts",
-                    "z/abz.ts",
-                    "z/aba.ts",
-                    "x/b.ts"
-                ],
-                exclude: [
-                    "*.ts",
-                    "z/??z.ts",
-                    "*/b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/z/a.ts",
-                    "c:/dev/z/aba.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("with recursive excludes", () => {
-            const json = {
-                include: [
-                    "a.ts",
-                    "b.ts",
-                    "x/a.ts",
-                    "x/b.ts",
-                    "x/y/a.ts",
-                    "x/y/b.ts"
-                ],
-                exclude: [
-                    "**/b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/x/a.ts",
-                    "c:/dev/x/y/a.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("with case sensitive exclude", () => {
-            const json = {
-                include: [
-                    "B.ts"
-                ],
-                exclude: [
-                    "**/b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "/dev/B.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseSensitiveHost, caseSensitiveBasePath);
-        });
-        it("with common package folders and no exclusions", () => {
-            const json = {
-                include: [
-                    "a.ts",
-                    "b.ts",
-                    "node_modules/a.ts",
-                    "bower_components/a.ts",
-                    "jspm_packages/a.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts",
-                    "c:/dev/node_modules/a.ts",
-                    "c:/dev/bower_components/a.ts",
-                    "c:/dev/jspm_packages/a.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-        });
-        it("with common package folders and exclusions", () => {
-            const json = {
-                include: [
-                    "a.ts",
-                    "b.ts",
-                    "node_modules/a.ts",
-                    "bower_components/a.ts",
-                    "jspm_packages/a.ts"
-                ],
-                exclude: [
-                    "a.ts",
-                    "b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/node_modules/a.ts",
-                    "c:/dev/bower_components/a.ts",
-                    "c:/dev/jspm_packages/a.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-        });
-        it("with common package folders and empty exclude", () => {
-            const json = {
-                include: [
-                    "a.ts",
-                    "b.ts",
-                    "node_modules/a.ts",
-                    "bower_components/a.ts",
-                    "jspm_packages/a.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts",
-                    "c:/dev/node_modules/a.ts",
-                    "c:/dev/bower_components/a.ts",
-                    "c:/dev/jspm_packages/a.ts"
-                ],
-                wildcardDirectories: {},
-            };
-            validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-        });
+        baselineMatches("without exclusions with literal include list", {
+            include: [
+                "a.ts",
+                "b.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with non .ts file extensions are excluded", {
+            include: [
+                "a.js",
+                "b.js"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with missing files are excluded with literal include list", {
+            include: [
+                "z.ts",
+                "x.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with literal excludes", {
+            include: [
+                "a.ts",
+                "b.ts"
+            ],
+            exclude: [
+                "b.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with wildcard excludes", {
+            include: [
+                "a.ts",
+                "b.ts",
+                "z/a.ts",
+                "z/abz.ts",
+                "z/aba.ts",
+                "x/b.ts"
+            ],
+            exclude: [
+                "*.ts",
+                "z/??z.ts",
+                "*/b.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with recursive excludes", {
+            include: [
+                "a.ts",
+                "b.ts",
+                "x/a.ts",
+                "x/b.ts",
+                "x/y/a.ts",
+                "x/y/b.ts"
+            ],
+            exclude: [
+                "**/b.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with case sensitive exclude", {
+            include: [
+                "B.ts"
+            ],
+            exclude: [
+                "**/b.ts"
+            ]
+        }, caseSensitiveHost, caseSensitiveBasePath);
+        baselineMatches("with common package folders and no exclusions", {
+            include: [
+                "a.ts",
+                "b.ts",
+                "node_modules/a.ts",
+                "bower_components/a.ts",
+                "jspm_packages/a.ts"
+            ]
+        }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
+        baselineMatches("with common package folders and exclusions", {
+            include: [
+                "a.ts",
+                "b.ts",
+                "node_modules/a.ts",
+                "bower_components/a.ts",
+                "jspm_packages/a.ts"
+            ],
+            exclude: [
+                "a.ts",
+                "b.ts"
+            ]
+        }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
+        baselineMatches("with common package folders and empty exclude", {
+            include: [
+                "a.ts",
+                "b.ts",
+                "node_modules/a.ts",
+                "bower_components/a.ts",
+                "jspm_packages/a.ts"
+            ]
+        }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
     });
 
     describe("with wildcard include list", () => {
-        it("is sorted in include order, then in alphabetical order", () => {
-            const json = {
-                include: [
-                    "z/*.ts",
-                    "x/*.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/z/a.ts",
-                    "c:/dev/z/aba.ts",
-                    "c:/dev/z/abz.ts",
-                    "c:/dev/z/b.ts",
-                    "c:/dev/z/bba.ts",
-                    "c:/dev/z/bbz.ts",
-                    "c:/dev/x/a.ts",
-                    "c:/dev/x/aa.ts",
-                    "c:/dev/x/b.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev/z": ts.WatchDirectoryFlags.None,
-                    "c:/dev/x": ts.WatchDirectoryFlags.None
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("same named declarations are excluded", () => {
-            const json = {
-                include: [
-                    "*.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts",
-                    "c:/dev/c.d.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.None
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("`*` matches only ts files", () => {
-            const json = {
-                include: [
-                    "*"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts",
-                    "c:/dev/c.d.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.None
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("`?` matches only a single character", () => {
-            const json = {
-                include: [
-                    "x/?.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/x/a.ts",
-                    "c:/dev/x/b.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev/x": ts.WatchDirectoryFlags.None
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("with recursive directory", () => {
-            const json = {
+        baselineMatches("is sorted in include order, then in alphabetical order", {
+            include: [
+                "z/*.ts",
+                "x/*.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("same named declarations are excluded", {
+            include: [
+                "*.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("star matches only ts files", {
+            include: [
+                "*"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("question matches only a single character", {
+            include: [
+                "x/?.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with recursive directory", {
+            include: [
+                "**/a.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with multiple recursive directories", {
+            include: [
+                "x/y/**/a.ts",
+                "x/**/a.ts",
+                "z/**/a.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("case sensitive", {
+            include: [
+                "**/A.ts"
+            ]
+        }, caseSensitiveHost, caseSensitiveBasePath);
+        baselineMatches("with missing files are excluded with wildcard include list", {
+            include: [
+                "*/z.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("always include literal files", {
+            files: [
+                "a.ts"
+            ],
+            include: [
+                "*/z.ts"
+            ],
+            exclude: [
+                "**/a.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("exclude folders", {
+            include: [
+                "**/*"
+            ],
+            exclude: [
+                "z",
+                "x"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        describe("with common package folders", () => {
+            baselineMatches("and no exclusions", {
                 include: [
                     "**/a.ts"
                 ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/x/a.ts",
-                    "c:/dev/x/y/a.ts",
-                    "c:/dev/z/a.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("with multiple recursive directories", () => {
-            const json = {
+            }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("and exclusions", {
                 include: [
-                    "x/y/**/a.ts",
-                    "x/**/a.ts",
-                    "z/**/a.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/x/y/a.ts",
-                    "c:/dev/x/a.ts",
-                    "c:/dev/z/a.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev/x": ts.WatchDirectoryFlags.Recursive,
-                    "c:/dev/z": ts.WatchDirectoryFlags.Recursive
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("case sensitive", () => {
-            const json = {
-                include: [
-                    "**/A.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "/dev/A.ts"
-                ],
-                wildcardDirectories: {
-                    "/dev": ts.WatchDirectoryFlags.Recursive
-                },
-            };
-            validateMatches(expected, json, caseSensitiveHost, caseSensitiveBasePath);
-        });
-        it("with missing files are excluded", () => {
-            const json = {
-                include: [
-                    "*/z.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [
-                    ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                        caseInsensitiveTsconfigPath, JSON.stringify(json.include), "[]")
-                ],
-                fileNames: [],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-        });
-        it("always include literal files", () => {
-            const json = {
-                files: [
-                    "a.ts"
-                ],
-                include: [
-                    "*/z.ts"
+                    "**/?.ts"
                 ],
                 exclude: [
-                    "**/a.ts"
+                    "a.ts"
                 ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts"
+            }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("and empty exclude", {
+                include: [
+                    "**/a.ts"
                 ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                },
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
+                exclude: [] as string[]
+            }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("and explicit recursive include", {
+                include: [
+                    "**/a.ts",
+                    "**/node_modules/a.ts"
+                ]
+            }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("and wildcard include", {
+                include: [
+                    "*/a.ts"
+                ]
+            }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("and explicit wildcard include", {
+                include: [
+                    "*/a.ts",
+                    "node_modules/a.ts"
+                ]
+            }, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
         });
-        it("exclude folders", () => {
-            const json = {
+        baselineMatches("exclude .js files when allowJs=false", {
+            compilerOptions: {
+                allowJs: false
+            },
+            include: [
+                "js/*"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("include .js files when allowJs=true", {
+            compilerOptions: {
+                allowJs: true
+            },
+            include: [
+                "js/*"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("include explicitly listed .min.js files when allowJs=true", {
+            compilerOptions: {
+                allowJs: true
+            },
+            include: [
+                "js/*.min.js"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("include paths outside of the project", {
+            include: [
+                "*",
+                "c:/ext/*"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("include paths outside of the project using relative paths", {
+            include: [
+                "*",
+                "../ext/*"
+            ],
+            exclude: [
+                "**"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("exclude paths outside of the project using relative paths", {
+            include: [
+                "c:/**/*"
+            ],
+            exclude: [
+                "../**"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("include files with .. in their name", {
+            include: [
+                "c:/ext/b/a..b.ts"
+            ],
+            exclude: [
+                "**"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("exclude files with .. in their name", {
+            include: [
+                "c:/ext/**/*"
+            ],
+            exclude: [
+                "c:/ext/b/a..b.ts"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+        baselineMatches("with jsx=none, allowJs=false", {
+            compilerOptions: {
+                allowJs: false
+            }
+        }, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
+        baselineMatches("with jsx=preserve, allowJs=false", {
+            compilerOptions: {
+                jsx: "preserve",
+                allowJs: false
+            }
+        }, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
+        baselineMatches("with jsx=react-native, allowJs=false", {
+            compilerOptions: {
+                jsx: "react-native",
+                allowJs: false
+            }
+        }, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
+        baselineMatches("with jsx=none, allowJs=true", {
+            compilerOptions: {
+                allowJs: true
+            }
+        }, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
+        baselineMatches("with jsx=preserve, allowJs=true", {
+            compilerOptions: {
+                jsx: "preserve",
+                allowJs: true
+            }
+        }, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
+        baselineMatches("with jsx=react-native, allowJs=true", {
+            compilerOptions: {
+                jsx: "react-native",
+                allowJs: true
+            }
+        }, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
+        baselineMatches("exclude .min.js files using wildcards", {
+            compilerOptions: {
+                allowJs: true
+            },
+            include: [
+                "js/*.min.js"
+            ],
+            exclude: [
+                "js/a*"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
+
+        describe("with trailing recursive directory", () => {
+            baselineMatches("in includes with trailing recursive directory", {
+                include: [
+                    "**"
+                ]
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
+            baselineMatches("in excludes with trailing recursive directory", {
                 include: [
                     "**/*"
                 ],
-                exclude: [
-                    "z",
-                    "x"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts",
-                    "c:/dev/c.d.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        describe("with common package folders", () => {
-            it("and no exclusions", () => {
-                const json = {
-                    include: [
-                        "**/a.ts"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/a.ts",
-                        "c:/dev/x/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    },
-                };
-                validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-            });
-            it("and exclusions", () => {
-                const json = {
-                    include: [
-                        "**/?.ts"
-                    ],
-                    exclude: [
-                        "a.ts"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/b.ts",
-                        "c:/dev/x/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    },
-                };
-                validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-            });
-            it("and empty exclude", () => {
-                const json = {
-                    include: [
-                        "**/a.ts"
-                    ],
-                    exclude: [] as string[]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/a.ts",
-                        "c:/dev/x/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    },
-                };
-                validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-            });
-            it("and explicit recursive include", () => {
-                const json = {
-                    include: [
-                        "**/a.ts",
-                        "**/node_modules/a.ts"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/a.ts",
-                        "c:/dev/x/a.ts",
-                        "c:/dev/node_modules/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    },
-                };
-                validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-            });
-            it("and wildcard include", () => {
-                const json = {
-                    include: [
-                        "*/a.ts"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/x/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    },
-                };
-                validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-            });
-            it("and explicit wildcard include", () => {
-                const json = {
-                    include: [
-                        "*/a.ts",
-                        "node_modules/a.ts"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/x/a.ts",
-                        "c:/dev/node_modules/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    },
-                };
-                validateMatches(expected, json, caseInsensitiveCommonFoldersHost, caseInsensitiveBasePath);
-            });
-        });
-        it("exclude .js files when allowJs=false", () => {
-            const json = {
-                compilerOptions: {
-                    allowJs: false
-                },
-                include: [
-                    "js/*"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    allowJs: false
-                },
-                errors: [
-                    ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                        caseInsensitiveTsconfigPath, JSON.stringify(json.include), "[]")
-                ],
-                fileNames: [],
-                wildcardDirectories: {
-                    "c:/dev/js": ts.WatchDirectoryFlags.None
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-        });
-        it("include .js files when allowJs=true", () => {
-            const json = {
-                compilerOptions: {
-                    allowJs: true
-                },
-                include: [
-                    "js/*"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    allowJs: true
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/js/a.js",
-                    "c:/dev/js/b.js"
-                ],
-                wildcardDirectories: {
-                    "c:/dev/js": ts.WatchDirectoryFlags.None
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("include explicitly listed .min.js files when allowJs=true", () => {
-            const json = {
-                compilerOptions: {
-                    allowJs: true
-                },
-                include: [
-                    "js/*.min.js"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    allowJs: true
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/js/ab.min.js",
-                    "c:/dev/js/d.min.js"
-                ],
-                wildcardDirectories: {
-                    "c:/dev/js": ts.WatchDirectoryFlags.None
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("include paths outside of the project", () => {
-            const json = {
-                include: [
-                    "*",
-                    "c:/ext/*"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.ts",
-                    "c:/dev/c.d.ts",
-                    "c:/ext/ext.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.None,
-                    "c:/ext": ts.WatchDirectoryFlags.None
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("include paths outside of the project using relative paths", () => {
-            const json = {
-                include: [
-                    "*",
-                    "../ext/*"
-                ],
                 exclude: [
                     "**"
                 ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/ext/ext.ts"
-                ],
-                wildcardDirectories: {
-                    "c:/ext": ts.WatchDirectoryFlags.None
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("exclude paths outside of the project using relative paths", () => {
-            const json = {
-                include: [
-                    "c:/**/*"
-                ],
-                exclude: [
-                    "../**"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [
-                    ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                        caseInsensitiveTsconfigPath, JSON.stringify(json.include), JSON.stringify(json.exclude))]
-                ,
-                fileNames: [],
-                wildcardDirectories: {}
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-        });
-        it("include files with .. in their name", () => {
-            const json = {
-                include: [
-                    "c:/ext/b/a..b.ts"
-                ],
-                exclude: [
-                    "**"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/ext/b/a..b.ts"
-                ],
-                wildcardDirectories: {}
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("exclude files with .. in their name", () => {
-            const json = {
-                include: [
-                    "c:/ext/**/*"
-                ],
-                exclude: [
-                    "c:/ext/b/a..b.ts"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/ext/ext.ts",
-                ],
-                wildcardDirectories: {
-                    "c:/ext": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-        it("with jsx=none, allowJs=false", () => {
-            const json = {
-                compilerOptions: {
-                    allowJs: false
-                }
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    allowJs: false
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.tsx",
-                    "c:/dev/c.tsx",
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
-        });
-        it("with jsx=preserve, allowJs=false", () => {
-            const json = {
-                compilerOptions: {
-                    jsx: "preserve",
-                    allowJs: false
-                }
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    jsx: ts.JsxEmit.Preserve,
-                    allowJs: false
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.tsx",
-                    "c:/dev/c.tsx",
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
-        });
-        it("with jsx=react-native, allowJs=false", () => {
-            const json = {
-                compilerOptions: {
-                    jsx: "react-native",
-                    allowJs: false
-                }
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    jsx: ts.JsxEmit.ReactNative,
-                    allowJs: false
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.tsx",
-                    "c:/dev/c.tsx",
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
-        });
-        it("with jsx=none, allowJs=true", () => {
-            const json = {
-                compilerOptions: {
-                    allowJs: true
-                }
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    allowJs: true
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.tsx",
-                    "c:/dev/c.tsx",
-                    "c:/dev/d.js",
-                    "c:/dev/e.jsx",
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
-        });
-        it("with jsx=preserve, allowJs=true", () => {
-            const json = {
-                compilerOptions: {
-                    jsx: "preserve",
-                    allowJs: true
-                }
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    jsx: ts.JsxEmit.Preserve,
-                    allowJs: true
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.tsx",
-                    "c:/dev/c.tsx",
-                    "c:/dev/d.js",
-                    "c:/dev/e.jsx",
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
-        });
-        it("with jsx=react-native, allowJs=true", () => {
-            const json = {
-                compilerOptions: {
-                    jsx: "react-native",
-                    allowJs: true
-                }
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    jsx: ts.JsxEmit.ReactNative,
-                    allowJs: true
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/a.ts",
-                    "c:/dev/b.tsx",
-                    "c:/dev/c.tsx",
-                    "c:/dev/d.js",
-                    "c:/dev/e.jsx",
-                ],
-                wildcardDirectories: {
-                    "c:/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveMixedExtensionHost, caseInsensitiveBasePath);
-        });
-        it("exclude .min.js files using wildcards", () => {
-            const json = {
-                compilerOptions: {
-                    allowJs: true
-                },
-                include: [
-                    "js/*.min.js"
-                ],
-                exclude: [
-                    "js/a*"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {
-                    allowJs: true
-                },
-                errors: [],
-                fileNames: [
-                    "c:/dev/js/d.min.js"
-                ],
-                wildcardDirectories: {
-                    "c:/dev/js": ts.WatchDirectoryFlags.None
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-        });
-
-        describe("with trailing recursive directory", () => {
-            it("in includes", () => {
-                const json = {
-                    include: [
-                        "**"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [
-                        createDiagnosticForConfigFile(json, 12, 4, ts.Diagnostics.File_specification_cannot_end_in_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0, "**"),
-                        ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                            caseInsensitiveTsconfigPath, JSON.stringify(json.include), "[]")
-                    ],
-                    fileNames: [],
-                    wildcardDirectories: {}
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-            });
-            it("in excludes", () => {
-                const json = {
-                    include: [
-                        "**/*"
-                    ],
-                    exclude: [
-                        "**"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [
-                        ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                            caseInsensitiveTsconfigPath, JSON.stringify(json.include), JSON.stringify(json.exclude))
-                    ],
-                    fileNames: [],
-                    wildcardDirectories: {}
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-            });
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
         });
         describe("with multiple recursive directory patterns", () => {
-            it("in includes", () => {
-                const json = {
-                    include: [
-                        "**/x/**/*"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/x/a.ts",
-                        "c:/dev/x/aa.ts",
-                        "c:/dev/x/b.ts",
-                        "c:/dev/x/y/a.ts",
-                        "c:/dev/x/y/b.ts",
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    }
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-            });
-            it("in excludes", () => {
-                const json = {
-                    include: [
-                        "**/a.ts"
-                    ],
-                    exclude: [
-                        "**/x/**"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/a.ts",
-                        "c:/dev/z/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    }
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-            });
+            baselineMatches("in includes with multiple recursive directory patterns", {
+                include: [
+                    "**/x/**/*"
+                ]
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
         });
+        baselineMatches("in excludes", {
+            include: [
+                "**/a.ts"
+            ],
+            exclude: [
+                "**/x/**"
+            ]
+        }, caseInsensitiveHost, caseInsensitiveBasePath);
 
         describe("with parent directory symbols after a recursive directory pattern", () => {
-            it("in includes immediately after", () => {
-                const json = {
-                    include: [
-                        "**/../*"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [
-                        createDiagnosticForConfigFile(json, 12, 9, ts.Diagnostics.File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0, "**/../*"),
-                        ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                            caseInsensitiveTsconfigPath, JSON.stringify(json.include), "[]")
-                    ],
-                    fileNames: [],
-                    wildcardDirectories: {}
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-            });
+            baselineMatches("in includes immediately after", {
+                include: [
+                    "**/../*"
+                ]
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
 
-            it("in includes after a subdirectory", () => {
-                const json = {
-                    include: [
-                        "**/y/../*"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [
-                        createDiagnosticForConfigFile(json, 12, 11, ts.Diagnostics.File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0, "**/y/../*"),
-                        ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                            caseInsensitiveTsconfigPath, JSON.stringify(json.include), "[]")
-                    ],
-                    fileNames: [],
-                    wildcardDirectories: {}
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-            });
+            baselineMatches("in includes after a subdirectory", {
+                include: [
+                    "**/y/../*"
+                ]
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
 
-            it("in excludes immediately after", () => {
-                const json = {
-                    include: [
-                        "**/a.ts"
-                    ],
-                    exclude: [
-                        "**/.."
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [
-                        createDiagnosticForConfigFile(json, 34, 7, ts.Diagnostics.File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0, "**/..")
-                    ],
-                    fileNames: [
-                        "c:/dev/a.ts",
-                        "c:/dev/x/a.ts",
-                        "c:/dev/x/y/a.ts",
-                        "c:/dev/z/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    }
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-            });
+            baselineMatches("in excludes immediately after", {
+                include: [
+                    "**/a.ts"
+                ],
+                exclude: [
+                    "**/.."
+                ]
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
 
-            it("in excludes after a subdirectory", () => {
-                const json = {
-                    include: [
-                        "**/a.ts"
-                    ],
-                    exclude: [
-                        "**/y/.."
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [
-                        createDiagnosticForConfigFile(json, 34, 9, ts.Diagnostics.File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildcard_Asterisk_Asterisk_Colon_0, "**/y/..")
-                    ],
-                    fileNames: [
-                        "c:/dev/a.ts",
-                        "c:/dev/x/a.ts",
-                        "c:/dev/x/y/a.ts",
-                        "c:/dev/z/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    }
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-            });
+            baselineMatches("in excludes after a subdirectory", {
+                include: [
+                    "**/a.ts"
+                ],
+                exclude: [
+                    "**/y/.."
+                ]
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
         });
 
         describe("with implicit globbification", () => {
-            it("Expands 'z' to 'z/**/*'", () => {
-                const json = {
-                    include: ["z"]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [ "a.ts", "aba.ts", "abz.ts", "b.ts", "bba.ts", "bbz.ts" ].map(x => `c:/dev/z/${x}`),
-                    wildcardDirectories: {
-                        "c:/dev/z": ts.WatchDirectoryFlags.Recursive
-                    }
-                };
-                validateMatches(expected, json, caseInsensitiveHost, caseInsensitiveBasePath);
-            });
+            baselineMatches("Expands z to z/starstart/star", {
+                include: ["z"]
+            }, caseInsensitiveHost, caseInsensitiveBasePath);
         });
     });
 
     describe("with files or folders that begin with a .", () => {
-        it("that are not explicitly included", () => {
-            const json = {
-                include: [
-                    "x/**/*",
-                    "w/*/*"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "c:/dev/x/d.ts",
-                    "c:/dev/x/y/d.ts",
-                ],
-                wildcardDirectories: {
-                    "c:/dev/x": ts.WatchDirectoryFlags.Recursive,
-                    "c:/dev/w": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
-        });
+        baselineMatches("that are not explicitly included", {
+            include: [
+                "x/**/*",
+                "w/*/*"
+            ]
+        }, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
         describe("that are explicitly included", () => {
-            it("without wildcards", () => {
-                const json = {
-                    include: [
-                        "x/.y/a.ts",
-                        "c:/dev/.z/.b.ts"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/x/.y/a.ts",
-                        "c:/dev/.z/.b.ts"
-                    ],
-                    wildcardDirectories: {}
-                };
-                validateMatches(expected, json, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
-            });
-            it("with recursive wildcards that match directories", () => {
-                const json = {
-                    include: [
-                        "**/.*/*"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/.z/c.ts",
-                        "c:/dev/g.min.js/.g/g.ts",
-                        "c:/dev/w/.u/e.ts",
-                        "c:/dev/x/.y/a.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev": ts.WatchDirectoryFlags.Recursive
-                    }
-                };
-                validateMatches(expected, json, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
-            });
-            it("with recursive wildcards that match nothing", () => {
-                const json = {
-                    include: [
-                        "x/**/.y/*",
-                        ".z/**/.*"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [],
-                    fileNames: [
-                        "c:/dev/x/.y/a.ts",
-                        "c:/dev/.z/.b.ts"
-                    ],
-                    wildcardDirectories: {
-                        "c:/dev/.z": ts.WatchDirectoryFlags.Recursive,
-                        "c:/dev/x": ts.WatchDirectoryFlags.Recursive
-                    }
-                };
-                validateMatches(expected, json, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
-            });
-            it("with wildcard excludes that implicitly exclude dotted files", () => {
-                const json = {
-                    include: [
-                        "**/.*/*"
-                    ],
-                    exclude: [
-                        "**/*"
-                    ]
-                };
-                const expected: ts.ParsedCommandLine = {
-                    options: {},
-                    errors: [
-                        ts.createCompilerDiagnostic(ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2,
-                            caseInsensitiveTsconfigPath, JSON.stringify(json.include), JSON.stringify(json.exclude))
-                    ],
-                    fileNames: [],
-                    wildcardDirectories: {}
-                };
-                validateMatches(expected, json, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath, /*existingOptions*/ undefined, caseInsensitiveTsconfigPath);
-            });
+            baselineMatches("without wildcards", {
+                include: [
+                    "x/.y/a.ts",
+                    "c:/dev/.z/.b.ts"
+                ]
+            }, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("with recursive wildcards that match directories", {
+                include: [
+                    "**/.*/*"
+                ]
+            }, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("with recursive wildcards that match nothing", {
+                include: [
+                    "x/**/.y/*",
+                    ".z/**/.*"
+                ]
+            }, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
+            baselineMatches("with wildcard excludes that implicitly exclude dotted files", {
+                include: [
+                    "**/.*/*"
+                ],
+                exclude: [
+                    "**/*"
+                ]
+            }, caseInsensitiveDottedFoldersHost, caseInsensitiveBasePath);
         });
     });
 
     describe("exclude or include patterns which start with **", () => {
-        it("can exclude dirs whose pattern starts with **", () => {
-            const json = {
-                exclude: [
-                    "**/x"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "/dev/A.ts",
-                    "/dev/B.ts",
-                    "/dev/a.ts",
-                    "/dev/b.ts",
-                    "/dev/c.d.ts",
-                    "/dev/q/a/c/b/d.ts",
-                    "/dev/z/a.ts",
-                    "/dev/z/aba.ts",
-                    "/dev/z/abz.ts",
-                    "/dev/z/b.ts",
-                    "/dev/z/bba.ts",
-                    "/dev/z/bbz.ts",
-                ],
-                wildcardDirectories: {
-                    "/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseSensitiveHost, caseSensitiveBasePath);
-        });
-        it("can include dirs whose pattern starts with **", () => {
-            const json = {
-                include: [
-                    "**/x",
-                    "**/a/**/b"
-                ]
-            };
-            const expected: ts.ParsedCommandLine = {
-                options: {},
-                errors: [],
-                fileNames: [
-                    "/dev/x/a.ts",
-                    "/dev/x/b.ts",
-                    "/dev/x/y/a.ts",
-                    "/dev/x/y/b.ts",
-                    "/dev/q/a/c/b/d.ts",
-                ],
-                wildcardDirectories: {
-                    "/dev": ts.WatchDirectoryFlags.Recursive
-                }
-            };
-            validateMatches(expected, json, caseSensitiveHost, caseSensitiveBasePath);
-        });
+        baselineMatches("can exclude dirs whose pattern starts with starstar", {
+            exclude: [
+                "**/x"
+            ]
+        }, caseSensitiveHost, caseSensitiveBasePath);
+        baselineMatches("can include dirs whose pattern starts with starstart", {
+            include: [
+                "**/x",
+                "**/a/**/b"
+            ]
+        }, caseSensitiveHost, caseSensitiveBasePath);
     });
 
-    it("can include files in the same order on multiple platforms", () => {
-        function getExpected(basePath: string): ts.ParsedCommandLine {
-            return {
-                options: {},
-                errors: [],
-                fileNames: [
-                    `${basePath}Yosemite.ts`, // capital always comes before lowercase letters
-                    `${basePath}xylophone.ts`,
-                    `${basePath}zebra.ts`
-                ],
-                wildcardDirectories: {
-                    [basePath.slice(0, basePath.length - 1)]: ts.WatchDirectoryFlags.Recursive
-                },
-            };
-        }
-        const json = {};
-        validateMatches(getExpected(caseSensitiveBasePath), json, caseSensitiveOrderingDiffersWithCaseHost, caseSensitiveBasePath);
-        validateMatches(getExpected(caseInsensitiveBasePath), json, caseInsensitiveOrderingDiffersWithCaseHost, caseInsensitiveBasePath);
-    });
+    baselineMatches("can include files in the same order on multiple platforms case sensitive", {}, caseSensitiveOrderingDiffersWithCaseHost, caseSensitiveBasePath);
+    baselineMatches("can include files in the same order on multiple platforms case insensitive", {}, caseInsensitiveOrderingDiffersWithCaseHost, caseInsensitiveBasePath);
 
-    it("when recursive symlinked directories are present", () => {
+    describe("when recursive symlinked directories are present", () => {
         const fs = new vfs.FileSystem(/*ignoreCase*/ true, {
             cwd: caseInsensitiveBasePath, files: {
                 "c:/dev/index.ts": ""
@@ -1529,16 +597,6 @@ describe("unittests:: config:: matchFiles", () => {
         fs.symlinkSync("c:/dev/a", "c:/dev/a/b/c/grandparent");
         const host = new fakes.ParseConfigHost(fs);
         const json = {};
-        const expected: ts.ParsedCommandLine = {
-            options: {},
-            errors: [],
-            fileNames: [
-                "c:/dev/index.ts"
-            ],
-            wildcardDirectories: {
-                "c:/dev": ts.WatchDirectoryFlags.Recursive
-            },
-        };
-        validateMatches(expected, json, host, caseInsensitiveBasePath);
+        baselineMatches("when recursive symlinked directories are present", json, host, caseInsensitiveBasePath);
     });
 });
diff --git a/src/testRunner/unittests/config/projectReferences.ts b/src/testRunner/unittests/config/projectReferences.ts
deleted file mode 100644
index e08d6d0f104..00000000000
--- a/src/testRunner/unittests/config/projectReferences.ts
+++ /dev/null
@@ -1,355 +0,0 @@
-import * as fakes from "../../_namespaces/fakes";
-import * as ts from "../../_namespaces/ts";
-import * as vfs from "../../_namespaces/vfs";
-import { libFile } from "../virtualFileSystemWithWatch";
-
-interface TestProjectSpecification {
-    configFileName?: string;
-    references?: readonly (string | ts.ProjectReference)[];
-    files: { [fileName: string]: string };
-    outputFiles?: { [fileName: string]: string };
-    config?: object;
-    options?: Partial<ts.CompilerOptions>;
-}
-interface TestSpecification {
-    [path: string]: TestProjectSpecification;
-}
-
-function assertHasError(message: string, errors: readonly ts.Diagnostic[], diag: ts.DiagnosticMessage) {
-    if (!errors.some(e => e.code === diag.code)) {
-        const errorString = errors.map(e => `    ${e.file ? e.file.fileName : "[global]"}: ${e.messageText}`).join("\r\n");
-        assert(false, `${message}: Did not find any diagnostic for ${diag.message} in:\r\n${errorString}`);
-    }
-}
-
-function assertNoErrors(message: string, errors: readonly ts.Diagnostic[]) {
-    if (errors && errors.length > 0) {
-        assert(false, `${message}: Expected no errors, but found:\r\n${errors.map(e => `    ${e.messageText}`).join("\r\n")}`);
-    }
-}
-
-function combineAllPaths(...paths: string[]) {
-    let result = paths[0];
-    for (let i = 1; i < paths.length; i++) {
-        result = ts.combinePaths(result, paths[i]);
-    }
-    return result;
-}
-
-const emptyModule = "export { };";
-
-/**
- * Produces the text of a source file which imports all of the
- * specified module names
- */
-function moduleImporting(...names: string[]) {
-    return names.map((n, i) => `import * as mod_${i} from ${n}`).join("\r\n");
-}
-
-function testProjectReferences(spec: TestSpecification, entryPointConfigFileName: string, checkResult: (prog: ts.Program, host: fakes.CompilerHost) => void) {
-    const files = new Map<string, string>();
-    for (const key in spec) {
-        const sp = spec[key];
-        const configFileName = combineAllPaths("/", key, sp.configFileName || "tsconfig.json");
-        const options = {
-            compilerOptions: {
-                composite: true,
-                outDir: "bin",
-                ...sp.options
-            },
-            references: (sp.references || []).map(r => {
-                if (typeof r === "string") {
-                    return { path: r };
-                }
-                return r;
-            }),
-            ...sp.config
-        };
-        const configContent = JSON.stringify(options);
-        const outDir = options.compilerOptions.outDir;
-        files.set(configFileName, configContent);
-        for (const sourceFile of Object.keys(sp.files)) {
-            files.set(sourceFile, sp.files[sourceFile]);
-        }
-        if (sp.outputFiles) {
-            for (const outFile of Object.keys(sp.outputFiles)) {
-                files.set(combineAllPaths("/", key, outDir, outFile), sp.outputFiles[outFile]);
-            }
-        }
-    }
-
-    const vfsys = new vfs.FileSystem(false, { files: { "/lib.d.ts": libFile.content } });
-    files.forEach((v, k) => {
-        vfsys.mkdirpSync(ts.getDirectoryPath(k));
-        vfsys.writeFileSync(k, v);
-    });
-    const host = new fakes.CompilerHost(new fakes.System(vfsys));
-
-    const { config, error } = ts.readConfigFile(entryPointConfigFileName, name => host.readFile(name));
-
-    // We shouldn't have any errors about invalid tsconfig files in these tests
-    assert(config && !error, ts.flattenDiagnosticMessageText(error && error.messageText, "\n"));
-    const file = ts.parseJsonConfigFileContent(config, ts.parseConfigHostFromCompilerHostLike(host), ts.getDirectoryPath(entryPointConfigFileName), {}, entryPointConfigFileName);
-    file.options.configFilePath = entryPointConfigFileName;
-    const prog = ts.createProgram({
-        rootNames: file.fileNames,
-        options: file.options,
-        host,
-        projectReferences: file.projectReferences
-    });
-    checkResult(prog, host);
-}
-
-describe("unittests:: config:: project-references meta check", () => {
-    it("default setup was created correctly", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: { "/primary/a.ts": emptyModule },
-                references: []
-            },
-            "/reference": {
-                files: { "/secondary/b.ts": moduleImporting("../primary/a") },
-                references: ["../primary"]
-            }
-        };
-        testProjectReferences(spec, "/primary/tsconfig.json", prog => {
-            assert.isTrue(!!prog, "Program should exist");
-            assertNoErrors("Sanity check should not produce errors", prog.getOptionsDiagnostics());
-        });
-    });
-});
-
-/**
- * Validate that we enforce the basic settings constraints for referenced projects
- */
-describe("unittests:: config:: project-references constraint checking for settings", () => {
-    it("errors when declaration = false", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: { "/primary/a.ts": emptyModule },
-                references: [],
-                options: {
-                    declaration: false
-                }
-            }
-        };
-
-        testProjectReferences(spec, "/primary/tsconfig.json", program => {
-            const errs = program.getOptionsDiagnostics();
-            assertHasError("Reports an error about the wrong decl setting", errs, ts.Diagnostics.Composite_projects_may_not_disable_declaration_emit);
-        });
-    });
-
-    it("errors when the referenced project doesn't have composite:true", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: { "/primary/a.ts": emptyModule },
-                references: [],
-                options: {
-                    composite: false
-                }
-            },
-            "/reference": {
-                files: { "/secondary/b.ts": moduleImporting("../primary/a") },
-                references: ["../primary"],
-                config: {
-                    files: ["b.ts"]
-                }
-            }
-        };
-        testProjectReferences(spec, "/reference/tsconfig.json", program => {
-            const errs = program.getOptionsDiagnostics();
-            assertHasError("Reports an error about 'composite' not being set", errs, ts.Diagnostics.Referenced_project_0_must_have_setting_composite_Colon_true);
-        });
-    });
-
-    it("does not error when the referenced project doesn't have composite:true if its a container project", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: { "/primary/a.ts": emptyModule },
-                references: [],
-                options: {
-                    composite: false
-                }
-            },
-            "/reference": {
-                files: { "/secondary/b.ts": moduleImporting("../primary/a") },
-                references: ["../primary"],
-            }
-        };
-        testProjectReferences(spec, "/reference/tsconfig.json", program => {
-            const errs = program.getOptionsDiagnostics();
-            assertNoErrors("Reports an error about 'composite' not being set", errs);
-        });
-    });
-
-    it("errors when the file list is not exhaustive", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: {
-                    "/primary/a.ts": "import * as b from './b'",
-                    "/primary/b.ts": "export {}"
-                },
-                config: {
-                    files: ["a.ts"]
-                }
-            }
-        };
-
-        testProjectReferences(spec, "/primary/tsconfig.json", program => {
-            const errs = program.getSemanticDiagnostics(program.getSourceFile("/primary/a.ts"));
-            assertHasError("Reports an error about b.ts not being in the list", errs, ts.Diagnostics.File_0_is_not_listed_within_the_file_list_of_project_1_Projects_must_list_all_files_or_use_an_include_pattern);
-        });
-    });
-
-    it("errors when the referenced project doesn't exist", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: { "/primary/a.ts": emptyModule },
-                references: ["../foo"]
-            }
-        };
-        testProjectReferences(spec, "/primary/tsconfig.json", program => {
-            const errs = program.getOptionsDiagnostics();
-            assertHasError("Reports an error about a missing file", errs, ts.Diagnostics.File_0_not_found);
-        });
-    });
-
-    it("errors when a prepended project reference doesn't set outFile", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: { "/primary/a.ts": emptyModule },
-                references: [{ path: "../someProj", prepend: true }]
-            },
-            "/someProj": {
-                files: { "/someProj/b.ts": "const x = 100;" }
-            }
-        };
-        testProjectReferences(spec, "/primary/tsconfig.json", program => {
-            const errs = program.getOptionsDiagnostics();
-            assertHasError("Reports an error about outFile not being set", errs, ts.Diagnostics.Cannot_prepend_project_0_because_it_does_not_have_outFile_set);
-        });
-    });
-
-    it("errors when a prepended project reference output doesn't exist", () => {
-        const spec: TestSpecification = {
-            "/primary": {
-                files: { "/primary/a.ts": "const y = x;" },
-                references: [{ path: "../someProj", prepend: true }]
-            },
-            "/someProj": {
-                files: { "/someProj/b.ts": "const x = 100;" },
-                options: { outFile: "foo.js" }
-            }
-        };
-        testProjectReferences(spec, "/primary/tsconfig.json", program => {
-            const errs = program.getOptionsDiagnostics();
-            assertHasError("Reports an error about outFile being missing", errs, ts.Diagnostics.Output_file_0_from_project_1_does_not_exist);
-        });
-    });
-});
-
-/**
- * Path mapping behavior
- */
-describe("unittests:: config:: project-references path mapping", () => {
-    it("redirects to the output .d.ts file", () => {
-        const spec: TestSpecification = {
-            "/alpha": {
-                files: { "/alpha/a.ts": "export const m: number = 3;" },
-                references: [],
-                outputFiles: { "a.d.ts": emptyModule }
-            },
-            "/beta": {
-                files: { "/beta/b.ts": "import { m } from '../alpha/a'" },
-                references: ["../alpha"]
-            }
-        };
-        testProjectReferences(spec, "/beta/tsconfig.json", program => {
-            assertNoErrors("File setup should be correct", program.getOptionsDiagnostics());
-            assertHasError("Found a type error", program.getSemanticDiagnostics(), ts.Diagnostics.Module_0_has_no_exported_member_1);
-        });
-    });
-});
-
-describe("unittests:: config:: project-references nice-behavior", () => {
-    it("issues a nice error when the input file is missing", () => {
-        const spec: TestSpecification = {
-            "/alpha": {
-                files: { "/alpha/a.ts": "export const m: number = 3;" },
-                references: []
-            },
-            "/beta": {
-                files: { "/beta/b.ts": "import { m } from '../alpha/a'" },
-                references: ["../alpha"]
-            }
-        };
-        testProjectReferences(spec, "/beta/tsconfig.json", program => {
-            assertHasError("Issues a useful error", program.getSemanticDiagnostics(), ts.Diagnostics.Output_file_0_has_not_been_built_from_source_file_1);
-        });
-    });
-
-    it("issues a nice error when the input file is missing when module reference is not relative", () => {
-        const spec: TestSpecification = {
-            "/alpha": {
-                files: { "/alpha/a.ts": "export const m: number = 3;" },
-                references: []
-            },
-            "/beta": {
-                files: { "/beta/b.ts": "import { m } from '@alpha/a'" },
-                references: ["../alpha"],
-                options: {
-                    baseUrl: "./",
-                    paths: {
-                        "@alpha/*": ["/alpha/*"]
-                    }
-                }
-            }
-        };
-        testProjectReferences(spec, "/beta/tsconfig.json", program => {
-            assertHasError("Issues a useful error", program.getSemanticDiagnostics(), ts.Diagnostics.Output_file_0_has_not_been_built_from_source_file_1);
-        });
-    });
-});
-
-/**
- * 'composite' behavior
- */
-describe("unittests:: config:: project-references behavior changes under composite: true", () => {
-    it("doesn't infer the rootDir from source paths", () => {
-        const spec: TestSpecification = {
-            "/alpha": {
-                files: { "/alpha/src/a.ts": "export const m: number = 3;" },
-                options: {
-                    declaration: true,
-                    outDir: "bin"
-                },
-                references: []
-            }
-        };
-        testProjectReferences(spec, "/alpha/tsconfig.json", (program, host) => {
-            program.emit();
-            assert.deepEqual(host.outputs.map(e => e.file).sort(), ["/alpha/bin/src/a.d.ts", "/alpha/bin/src/a.js", "/alpha/bin/tsconfig.tsbuildinfo"]);
-        });
-    });
-});
-
-describe("unittests:: config:: project-references errors when a file in a composite project occurs outside the root", () => {
-    it("Errors when a file is outside the rootdir", () => {
-        const spec: TestSpecification = {
-            "/alpha": {
-                files: { "/alpha/src/a.ts": "import * from '../../beta/b'", "/beta/b.ts": "export { }" },
-                options: {
-                    declaration: true,
-                    outDir: "bin"
-                },
-                references: []
-            }
-        };
-        testProjectReferences(spec, "/alpha/tsconfig.json", (program) => {
-            const semanticDiagnostics = program.getSemanticDiagnostics(program.getSourceFile("/alpha/src/a.ts"));
-            assertHasError("Issues an error about the rootDir", semanticDiagnostics, ts.Diagnostics.File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files);
-            assertHasError("Issues an error about the fileList", semanticDiagnostics, ts.Diagnostics.File_0_is_not_listed_within_the_file_list_of_project_1_Projects_must_list_all_files_or_use_an_include_pattern);
-        });
-    });
-});
diff --git a/src/testRunner/unittests/config/tsconfigParsing.ts b/src/testRunner/unittests/config/tsconfigParsing.ts
index db2a21c9e22..136fbb3a0b0 100644
--- a/src/testRunner/unittests/config/tsconfigParsing.ts
+++ b/src/testRunner/unittests/config/tsconfigParsing.ts
@@ -1,268 +1,224 @@
 import * as fakes from "../../_namespaces/fakes";
+import * as Harness from "../../_namespaces/Harness";
 import * as ts from "../../_namespaces/ts";
 import * as vfs from "../../_namespaces/vfs";
+import { baselineParseConfig } from "./helpers";
 
 describe("unittests:: config:: tsconfigParsing:: parseConfigFileTextToJson", () => {
-    function assertParseResult(jsonText: string, expectedConfigObject: { config?: any; error?: ts.Diagnostic[] }) {
-        const parsed = ts.parseConfigFileTextToJson("/apath/tsconfig.json", jsonText);
-        assert.equal(JSON.stringify(parsed), JSON.stringify(expectedConfigObject));
+    function formatErrors(errors: readonly ts.Diagnostic[]) {
+        return ts.formatDiagnosticsWithColorAndContext(errors, {
+            getCurrentDirectory: () => "/",
+            getCanonicalFileName: ts.identity,
+            getNewLine: () => "\n",
+        });
     }
-
-    function assertParseErrorWithExcludesKeyword(jsonText: string) {
-        {
-            const parsed = ts.parseConfigFileTextToJson("/apath/tsconfig.json", jsonText);
-            const parsedCommand = ts.parseJsonConfigFileContent(parsed.config, ts.sys, "tests/cases/unittests");
-            assert.isTrue(parsedCommand.errors && parsedCommand.errors.length === 1 &&
-                parsedCommand.errors[0].code === ts.Diagnostics.Unknown_option_excludes_Did_you_mean_exclude.code);
-        }
-        {
-            const parsed = ts.parseJsonText("/apath/tsconfig.json", jsonText);
-            const parsedCommand = ts.parseJsonSourceFileConfigFileContent(parsed, ts.sys, "tests/cases/unittests");
-            assert.isTrue(parsedCommand.errors && parsedCommand.errors.length === 1 &&
-                parsedCommand.errors[0].code === ts.Diagnostics.Unknown_option_excludes_Did_you_mean_exclude.code);
-        }
-    }
-
-    function getParsedCommandJson(jsonText: string, configFileName: string, basePath: string, allFileList: string[]) {
-        const parsed = ts.parseConfigFileTextToJson(configFileName, jsonText);
-        const files = allFileList.reduce((files, value) => (files[value] = "", files), {} as vfs.FileSet);
-        const host: ts.ParseConfigHost = new fakes.ParseConfigHost(new vfs.FileSystem(/*ignoreCase*/ false, { cwd: basePath, files: { "/": {}, ...files } }));
-        return ts.parseJsonConfigFileContent(parsed.config, host, basePath, /*existingOptions*/ undefined, configFileName);
-    }
-
-    function getParsedCommandJsonNode(jsonText: string, configFileName: string, basePath: string, allFileList: string[]) {
-        const parsed = ts.parseJsonText(configFileName, jsonText);
-        const files = allFileList.reduce((files, value) => (files[value] = "", files), {} as vfs.FileSet);
-        const host: ts.ParseConfigHost = new fakes.ParseConfigHost(new vfs.FileSystem(/*ignoreCase*/ false, { cwd: basePath, files: { "/": {}, ...files } }));
-        return ts.parseJsonSourceFileConfigFileContent(parsed, host, basePath, /*existingOptions*/ undefined, configFileName);
-    }
-
-    function assertParseFileList(jsonText: string, configFileName: string, basePath: string, allFileList: string[], expectedFileList: string[]) {
-        {
-            const parsed = getParsedCommandJson(jsonText, configFileName, basePath, allFileList);
-            assert.isTrue(ts.arrayIsEqualTo(parsed.fileNames.sort(), expectedFileList.sort()));
-        }
-        {
-            const parsed = getParsedCommandJsonNode(jsonText, configFileName, basePath, allFileList);
-            assert.isTrue(ts.arrayIsEqualTo(parsed.fileNames.sort(), expectedFileList.sort()));
-        }
-    }
-
-    function assertParseFileDiagnostics(jsonText: string, configFileName: string, basePath: string, allFileList: string[], expectedDiagnosticCode: number, noLocation?: boolean) {
-        {
-            const parsed = getParsedCommandJson(jsonText, configFileName, basePath, allFileList);
-            assert.isTrue(parsed.errors.length >= 0);
-            assert.isTrue(parsed.errors.filter(e => e.code === expectedDiagnosticCode).length > 0, `Expected error code ${expectedDiagnosticCode} to be in ${JSON.stringify(parsed.errors)}`);
-        }
-        {
-            const parsed = getParsedCommandJsonNode(jsonText, configFileName, basePath, allFileList);
-            assert.isTrue(parsed.errors.length >= 0);
-            assert.isTrue(parsed.errors.filter(e => e.code === expectedDiagnosticCode).length > 0, `Expected error code ${expectedDiagnosticCode} to be in ${JSON.stringify(parsed.errors)}`);
-            if (!noLocation) {
-                assert.isTrue(parsed.errors.filter(e => e.code === expectedDiagnosticCode && e.file && e.start && e.length).length > 0, `Expected error code ${expectedDiagnosticCode} to be in ${JSON.stringify(parsed.errors)} with location information`);
+    function baselineParseResult(name: string, jsonTexts: () => string[]) {
+        it(name, () => {
+            const baseline: string[] = [];
+            for (const jsonText of jsonTexts()) {
+                baseline.push("Input::", jsonText);
+                const parsed = ts.parseConfigFileTextToJson("/apath/tsconfig.json", jsonText);
+                baseline.push("Config::", JSON.stringify(parsed.config, /*replacer*/ undefined, " "));
+                baseline.push("Errors::");
+                baseline.push(formatErrors(parsed.error ? [parsed.error] : ts.emptyArray));
+                baseline.push("");
             }
-        }
+            Harness.Baseline.runBaseline(`config/tsconfigParsing/${name} jsonParse.js`, baseline.join("\n"));
+        });
     }
 
-    function assertParseFileDiagnosticsExclusion(jsonText: string, configFileName: string, basePath: string, allFileList: string[], expectedExcludedDiagnosticCode: number) {
-        {
-            const parsed = getParsedCommandJson(jsonText, configFileName, basePath, allFileList);
-            assert.isTrue(parsed.errors.length >= 0);
-            assert.isTrue(parsed.errors.findIndex(e => e.code === expectedExcludedDiagnosticCode) === -1, `Expected error code ${expectedExcludedDiagnosticCode} to not be in ${JSON.stringify(parsed.errors)}`);
-        }
-        {
-            const parsed = getParsedCommandJsonNode(jsonText, configFileName, basePath, allFileList);
-            assert.isTrue(parsed.errors.length >= 0);
-            assert.isTrue(parsed.errors.findIndex(e => e.code === expectedExcludedDiagnosticCode) === -1, `Expected error code ${expectedExcludedDiagnosticCode} to not be in ${JSON.stringify(parsed.errors)}`);
-        }
+    interface VerifyConfig {
+        jsonText: string;
+        configFileName: string;
+        basePath: string;
+        allFileList: string[];
     }
 
-    it("returns empty config for file with only whitespaces", () => {
-        assertParseResult("", { config : {} });
-        assertParseResult(" ", { config : {} });
-    });
+    function baselinedParsed(subScenario: string, scenario: () => VerifyConfig[], skipJson?: true) {
+        baselineParseConfig({
+            scenario: "tsconfigParsing",
+            subScenario,
+            input: () => scenario().map(({ jsonText, configFileName, basePath, allFileList }) => ({
+                createHost: () => {
+                    const files = allFileList.reduce((files, value) => (files[value] = "", files), {} as vfs.FileSet);
+                    files[ts.combinePaths(basePath, configFileName)] = jsonText;
+                    return new fakes.ParseConfigHost(new vfs.FileSystem(
+                        /*ignoreCase*/ false,
+                        {
+                            cwd: basePath,
+                            files: { "/": {}, ...files }
+                        }));
+                },
+                jsonText,
+                configFileName,
+                basePath,
+                baselineParsed: (baseline, parsed) => {
+                    baseline.push("FileNames::");
+                    baseline.push(parsed.fileNames.join());
+                },
+            })),
+            skipJson
+        });
+    }
 
-    it("returns empty config for file with comments only", () => {
-        assertParseResult("// Comment", { config: {} });
-        assertParseResult("/* Comment*/", { config: {} });
-    });
+    baselineParseResult("returns empty config for file with only whitespaces", () => [
+        "",
+        " ",
+    ]);
 
-    it("returns empty config when config is empty object", () => {
-        assertParseResult("{}", { config: {} });
-    });
+    baselineParseResult("returns empty config for file with comments only", () => [
+        "// Comment",
+        "/* Comment*/",
+    ]);
 
-    it("returns config object without comments", () => {
-        assertParseResult(
-            `{ // Excluded files
-                    "exclude": [
-                        // Exclude d.ts
-                        "file.d.ts"
-                    ]
-                }`, { config: { exclude: ["file.d.ts"] } });
+    baselineParseResult("returns empty config when config is empty object", () => [
+        "{}"
+    ]);
 
-        assertParseResult(
-            `{
-                    /* Excluded
-                         Files
-                    */
-                    "exclude": [
-                        /* multiline comments can be in the middle of a line */"file.d.ts"
-                    ]
-                }`, { config: { exclude: ["file.d.ts"] } });
-    });
+    baselineParseResult("returns config object without comments", () => [
+        `{ // Excluded files
+            "exclude": [
+                // Exclude d.ts
+                "file.d.ts"
+            ]
+        }`,
+        `{
+            /* Excluded
+                    Files
+            */
+            "exclude": [
+                /* multiline comments can be in the middle of a line */"file.d.ts"
+            ]
+        }`,
+    ]);
 
-    it("keeps string content untouched", () => {
-        assertParseResult(
-            `{
-                    "exclude": [
-                        "xx//file.d.ts"
-                    ]
-                }`, { config: { exclude: ["xx//file.d.ts"] } });
-        assertParseResult(
-            `{
-                    "exclude": [
-                        "xx/*file.d.ts*/"
-                    ]
-                }`, { config: { exclude: ["xx/*file.d.ts*/"] } });
-    });
+    baselineParseResult("keeps string content untouched", () => [
+        `{
+            "exclude": [
+                "xx//file.d.ts"
+            ]
+        }`,
+        `{
+            "exclude": [
+                "xx/*file.d.ts*/"
+            ]
+        }`,
+    ]);
 
-    it("handles escaped characters in strings correctly", () => {
-        assertParseResult(
-            `{
-                    "exclude": [
-                        "xx\\"//files"
-                    ]
-                }`, { config: { exclude: ["xx\"//files"] } });
+    baselineParseResult("handles escaped characters in strings correctly", () => [
+        `{
+            "exclude": [
+                "xx\\"//files"
+            ]
+        }`,
+        `{
+            "exclude": [
+                "xx\\\\" // end of line comment
+            ]
+        }`,
+    ]);
 
-        assertParseResult(
-            `{
-                    "exclude": [
-                        "xx\\\\" // end of line comment
-                    ]
-                }`, { config: { exclude: ["xx\\"] } });
-    });
+    baselineParseResult("returns object with error when json is invalid", () => [
+        "invalid",
+    ]);
 
-    it("returns object with error when json is invalid", () => {
-        const parsed = ts.parseConfigFileTextToJson("/apath/tsconfig.json", "invalid");
-        assert.deepEqual(parsed.config, {});
-        const expected = ts.createCompilerDiagnostic(ts.Diagnostics._0_expected, "{");
-        const error = parsed.error!;
-        assert.equal(error.messageText, expected.messageText);
-        assert.equal(error.category, expected.category);
-        assert.equal(error.code, expected.code);
-        assert.equal(error.start, 0);
-        assert.equal(error.length, "invalid".length);
-    });
+    baselineParseResult("returns object when users correctly specify library", () => [
+        `{
+            "compilerOptions": {
+                "lib": ["es5"]
+            }
+        }`,
+        `{
+            "compilerOptions": {
+                "lib": ["es5", "es6"]
+            }
+        }`,
+    ]);
 
-    it("returns object when users correctly specify library", () => {
-        assertParseResult(
-            `{
-                    "compilerOptions": {
-                        "lib": ["es5"]
-                    }
-                }`, {
-                config: { compilerOptions: { lib: ["es5"] } }
-            });
-
-        assertParseResult(
-            `{
-                    "compilerOptions": {
-                        "lib": ["es5", "es6"]
-                    }
-                }`, {
-                config: { compilerOptions: { lib: ["es5", "es6"] } }
-            });
-    });
-
-    it("returns error when tsconfig have excludes", () => {
-        assertParseErrorWithExcludesKeyword(
-            `{
+    baselinedParsed("returns error when tsconfig have excludes", () => [{
+        jsonText: `{
                     "compilerOptions": {
                         "lib": ["es5"]
                     },
                     "excludes": [
                         "foge.ts"
                     ]
-                }`);
-    });
+                }`,
+        configFileName: "tsconfig.json",
+        basePath: "/apath",
+        allFileList: ["/apath/test.ts", "/apath/foge.ts"],
+    }]);
 
-    it("ignore dotted files and folders", () => {
-        assertParseFileList(
-            `{}`,
-            "tsconfig.json",
-            "/apath",
-            ["/apath/test.ts", "/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"],
-            ["/apath/test.ts"]
-        );
-    });
+    baselinedParsed("ignore dotted files and folders", () => [{
+        jsonText: `{}`,
+        configFileName: "tsconfig.json",
+        basePath: "/apath",
+        allFileList: ["/apath/test.ts", "/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"],
+    }]);
 
-    it("allow dotted files and folders when explicitly requested", () => {
-        assertParseFileList(
-            `{
+    baselinedParsed("allow dotted files and folders when explicitly requested", () => [{
+        jsonText: `{
                     "files": ["/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"]
                 }`,
-            "tsconfig.json",
-            "/apath",
-            ["/apath/test.ts", "/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"],
-            ["/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"]
-        );
-    });
+        configFileName: "tsconfig.json",
+        basePath: "/apath",
+        allFileList: ["/apath/test.ts", "/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"],
+    }]);
 
-    it("exclude outDir unless overridden", () => {
+    baselinedParsed("exclude outDir unless overridden", () => {
         const tsconfigWithoutExclude =
-        `{
+            `{
                 "compilerOptions": {
                     "outDir": "bin"
                 }
             }`;
         const tsconfigWithExclude =
-        `{
+            `{
                 "compilerOptions": {
                     "outDir": "bin"
                 },
                 "exclude": [ "obj" ]
             }`;
-        const rootDir = "/";
-        const allFiles = ["/bin/a.ts", "/b.ts"];
-        const expectedFiles = ["/b.ts"];
-        assertParseFileList(tsconfigWithoutExclude, "tsconfig.json", rootDir, allFiles, expectedFiles);
-        assertParseFileList(tsconfigWithExclude, "tsconfig.json", rootDir, allFiles, allFiles);
+        const basePath = "/";
+        const allFileList = ["/bin/a.ts", "/b.ts"];
+        return [
+            { jsonText: tsconfigWithoutExclude, configFileName: "tsconfig.json", basePath, allFileList },
+            { jsonText: tsconfigWithExclude, configFileName: "tsconfig.json", basePath, allFileList },
+        ];
     });
 
-    it("exclude declarationDir unless overridden", () => {
+    baselinedParsed("exclude declarationDir unless overridden", () => {
         const tsconfigWithoutExclude =
-        `{
+            `{
                 "compilerOptions": {
                     "declarationDir": "declarations"
                 }
             }`;
         const tsconfigWithExclude =
-        `{
+            `{
                 "compilerOptions": {
                     "declarationDir": "declarations"
                 },
                 "exclude": [ "types" ]
             }`;
 
-        const rootDir = "/";
-        const allFiles = ["/declarations/a.d.ts", "/a.ts"];
-        const expectedFiles = ["/a.ts"];
-
-        assertParseFileList(tsconfigWithoutExclude, "tsconfig.json", rootDir, allFiles, expectedFiles);
-        assertParseFileList(tsconfigWithExclude, "tsconfig.json", rootDir, allFiles, allFiles);
+        const basePath = "/";
+        const allFileList = ["/declarations/a.d.ts", "/a.ts"];
+        return [
+            { jsonText: tsconfigWithoutExclude, configFileName: "tsconfig.json", basePath, allFileList },
+            { jsonText: tsconfigWithExclude, configFileName: "tsconfig.json", basePath, allFileList },
+        ];
     });
 
-    it("implicitly exclude common package folders", () => {
-        assertParseFileList(
-            `{}`,
-            "tsconfig.json",
-            "/",
-            ["/node_modules/a.ts", "/bower_components/b.ts", "/jspm_packages/c.ts", "/d.ts", "/folder/e.ts"],
-            ["/d.ts", "/folder/e.ts"]
-        );
-    });
+    baselinedParsed("implicitly exclude common package folders", () => [{
+        jsonText: `{}`,
+        configFileName: "tsconfig.json",
+        basePath: "/",
+        allFileList: ["/node_modules/a.ts", "/bower_components/b.ts", "/jspm_packages/c.ts", "/d.ts", "/folder/e.ts"],
+    }]);
 
     it("parse and re-emit tsconfig.json file with diagnostics", () => {
+        const baseline: string[] = [];
         const content = `{
                 "compilerOptions": {
                     "allowJs": true
@@ -271,166 +227,157 @@ describe("unittests:: config:: tsconfigParsing:: parseConfigFileTextToJson", ()
                 }
                 "files": ["file1.ts"]
             }`;
+        baseline.push("Initial::", content);
         const result = ts.parseJsonText("config.json", content);
-        const diagnostics = result.parseDiagnostics;
-        const configJsonObject = ts.convertToObject(result, diagnostics);
-        const expectedResult = {
-            compilerOptions: {
-                allowJs: true,
-                outDir: "bin"
-            },
-            files: ["file1.ts"]
-        };
-        assert.isTrue(diagnostics.length === 2);
-        assert.equal(JSON.stringify(configJsonObject), JSON.stringify(expectedResult));
+        const configJsonObject = ts.convertToObject(result, result.parseDiagnostics);
+        baseline.push("Result::", JSON.stringify(configJsonObject, undefined, " "));
+        baseline.push("Errors::", formatErrors(result.parseDiagnostics));
+        Harness.Baseline.runBaseline(`config/tsconfigParsing/parse and re-emit tsconfig.json file with diagnostics.js`, baseline.join("\n"));
     });
 
-    it("generates errors for empty files list", () => {
-        const content = `{
+    baselinedParsed("generates errors for empty files list", () => [{
+        jsonText: `{
                 "files": []
-            }`;
-        assertParseFileDiagnostics(content,
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.ts"],
-            ts.Diagnostics.The_files_list_in_config_file_0_is_empty.code);
-    });
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }]);
 
-    it("generates errors for empty files list when no references are provided", () => {
-        const content = `{
+    baselinedParsed("generates errors for empty files list when no references are provided", () => [{
+        jsonText: `{
                 "files": [],
                 "references": []
-            }`;
-        assertParseFileDiagnostics(content,
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.ts"],
-            ts.Diagnostics.The_files_list_in_config_file_0_is_empty.code);
-    });
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }]);
 
-    it("does not generate errors for empty files list when one or more references are provided", () => {
-        const content = `{
+    baselinedParsed("does not generate errors for empty files list when one or more references are provided", () => [{
+        jsonText: `{
                 "files": [],
                 "references": [{ "path": "/apath" }]
-            }`;
-        assertParseFileDiagnosticsExclusion(content,
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.ts"],
-            ts.Diagnostics.The_files_list_in_config_file_0_is_empty.code);
-    });
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }]);
 
-    it("generates errors for directory with no .ts files", () => {
-        const content = `{
-            }`;
-        assertParseFileDiagnostics(content,
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.js"],
-            ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2.code,
-            /*noLocation*/ true);
-    });
+    baselinedParsed("generates errors for directory with no .ts files", () => [{
+        jsonText: `{
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.js"],
+    }]);
 
-    it("generates errors for empty directory", () => {
-        const content = `{
+    baselinedParsed("generates errors for empty directory", () => [{
+        jsonText: `{
                 "compilerOptions": {
                     "allowJs": true
                 }
-            }`;
-        assertParseFileDiagnostics(content,
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            [],
-            ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2.code,
-            /*noLocation*/ true);
-    });
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: [],
+    }]);
 
-    it("generates errors for empty include", () => {
-        const content = `{
+    baselinedParsed("generates errors for empty include", () => [{
+        jsonText: `{
                 "include": []
-            }`;
-        assertParseFileDiagnostics(content,
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.ts"],
-            ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2.code,
-            /*noLocation*/ true);
-    });
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }]);
 
-    it("generates errors for includes with outDir", () => {
-        const content = `{
+    baselinedParsed("generates errors for includes with outDir", () => [{
+        jsonText: `{
                 "compilerOptions": {
                     "outDir": "./"
                 },
                 "include": ["**/*"]
-            }`;
-        assertParseFileDiagnostics(content,
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.ts"],
-            ts.Diagnostics.No_inputs_were_found_in_config_file_0_Specified_include_paths_were_1_and_exclude_paths_were_2.code,
-            /*noLocation*/ true);
-    });
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }]);
 
-
-    it("generates errors for when invalid comment type present in tsconfig", () => {
-        const jsonText = `{
+    baselinedParsed("generates errors for when invalid comment type present in tsconfig", () => [{
+        jsonText: `{
               "compilerOptions": {
                 ## this comment does cause issues
                 "types" : [
                 ]
               }
-            }`;
-        const parsed = getParsedCommandJsonNode(jsonText, "/apath/tsconfig.json", "tests/cases/unittests", ["/apath/a.ts"]);
-        assert.isTrue(parsed.errors.length >= 0);
-    });
+            }`,
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }], /*skipJson*/ true);
 
-    it("generates errors when files is not string", () => {
-        assertParseFileDiagnostics(
-            JSON.stringify({
-                files: [{
-                    compilerOptions: {
-                        experimentalDecorators: true,
-                        allowJs: true
-                    }
-                }]
-            }),
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.ts"],
-            ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1.code,
-            /*noLocation*/ true);
-    });
+    baselinedParsed("generates errors when files is not string", () => [{
+        jsonText: JSON.stringify({
+            files: [{
+                compilerOptions: {
+                    experimentalDecorators: true,
+                    allowJs: true
+                }
+            }]
+        }),
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }]);
 
-    it("generates errors when include is not string", () => {
-        assertParseFileDiagnostics(
-            JSON.stringify({
-                include: [
-                    ["./**/*.ts"]
-                ]
-            }),
-            "/apath/tsconfig.json",
-            "tests/cases/unittests",
-            ["/apath/a.ts"],
-            ts.Diagnostics.Compiler_option_0_requires_a_value_of_type_1.code,
-            /*noLocation*/ true);
-    });
+    baselinedParsed("generates errors when include is not string", () => [{
+        jsonText: JSON.stringify({
+            include: [
+                ["./**/*.ts"]
+            ]
+        }),
+        configFileName: "/apath/tsconfig.json",
+        basePath: "tests/cases/unittests",
+        allFileList: ["/apath/a.ts"],
+    }]);
 
-    it("parses wildcard directories even when parent directories have dots", () => {
-        const parsed = ts.parseConfigFileTextToJson("/foo.bar/tsconfig.json", JSON.stringify({
+    function baselineWildcards(subScenario: string, scenario: () => { configFileName: string, jsonText: string, basePath: string }[]) {
+        baselineParseConfig({
+            scenario: "tsconfigParsing",
+            subScenario,
+            input: () => scenario().map(({ jsonText, configFileName, basePath }) => ({
+                createHost: () => new fakes.ParseConfigHost(new vfs.FileSystem(/*ignoreCase*/ false, {
+                    cwd: basePath,
+                    files: { [configFileName]: jsonText }
+                })),
+                jsonText,
+                configFileName,
+                basePath,
+                baselineParsed: (baseline, parsed) => {
+                    baseline.push("Wildcards::");
+                    ts.getOwnKeys(parsed.wildcardDirectories!).forEach(dir =>
+                        baseline.push(`${dir}: WatchDirectoryFlags.${(ts as any).WatchDirectoryFlags[parsed.wildcardDirectories![dir]]}`)
+                    );
+                },
+            })),
+            skipErrors: true,
+        });
+    }
+
+    baselineWildcards("parses wildcard directories even when parent directories have dots", () => [{
+        configFileName: "/foo.bar/tsconfig.json",
+        jsonText: JSON.stringify({
             include: ["src"]
-        }));
+        }),
+        basePath: "/foo.bar",
+    }]);
 
-        const parsedCommand = ts.parseJsonConfigFileContent(parsed.config, ts.sys, "/foo.bar");
-        assert.deepEqual(parsedCommand.wildcardDirectories, { "/foo.bar/src": ts.WatchDirectoryFlags.Recursive });
-    });
-
-    it("correctly parses wild card directories from implicit glob when two keys differ only in directory seperator", () => {
-        const parsed = ts.parseConfigFileTextToJson("/foo.bar/tsconfig.json", JSON.stringify({
+    baselineWildcards("correctly parses wild card directories from implicit glob when two keys differ only in directory seperator", () => [{
+        configFileName: "/foo.bar/tsconfig.json",
+        jsonText: JSON.stringify({
             include: ["./", "./**/*.json"]
-        }));
-
-        const parsedCommand = ts.parseJsonConfigFileContent(parsed.config, ts.sys, "/foo");
-        assert.deepEqual(parsedCommand.wildcardDirectories, { "/foo": ts.WatchDirectoryFlags.Recursive });
-    });
+        }),
+        basePath: "/foo",
+    }]);
 });
diff --git a/src/testRunner/unittests/config/tsconfigParsingWatchOptions.ts b/src/testRunner/unittests/config/tsconfigParsingWatchOptions.ts
index fd476c1748a..e87053dd5f5 100644
--- a/src/testRunner/unittests/config/tsconfigParsingWatchOptions.ts
+++ b/src/testRunner/unittests/config/tsconfigParsingWatchOptions.ts
@@ -1,49 +1,9 @@
 import * as fakes from "../../_namespaces/fakes";
-import * as Harness from "../../_namespaces/Harness";
 import * as ts from "../../_namespaces/ts";
 import * as vfs from "../../_namespaces/vfs";
+import { baselineParseConfig } from "./helpers";
 
 describe("unittests:: config:: tsconfigParsingWatchOptions:: parseConfigFileTextToJson", () => {
-    function createParseConfigHost(additionalFiles?: vfs.FileSet) {
-        return new fakes.ParseConfigHost(
-            new vfs.FileSystem(
-                /*ignoreCase*/ false,
-                {
-                    cwd: "/",
-                    files: { "/": {}, "/a.ts": "", ...additionalFiles }
-                }
-            )
-        );
-    }
-    function getParsedCommandJson(json: object, additionalFiles?: vfs.FileSet, existingWatchOptions?: ts.WatchOptions) {
-        return ts.parseJsonConfigFileContent(
-            json,
-            createParseConfigHost(additionalFiles),
-            "/",
-            /*existingOptions*/ undefined,
-            "tsconfig.json",
-            /*resolutionStack*/ undefined,
-            /*extraFileExtensions*/ undefined,
-            /*extendedConfigCache*/ undefined,
-            existingWatchOptions,
-        );
-    }
-
-    function getParsedCommandJsonNode(json: object, additionalFiles?: vfs.FileSet, existingWatchOptions?: ts.WatchOptions) {
-        const parsed = ts.parseJsonText("tsconfig.json", JSON.stringify(json));
-        return ts.parseJsonSourceFileConfigFileContent(
-            parsed,
-            createParseConfigHost(additionalFiles),
-            "/",
-            /*existingOptions*/ undefined,
-            "tsconfig.json",
-            /*resolutionStack*/ undefined,
-            /*extraFileExtensions*/ undefined,
-            /*extendedConfigCache*/ undefined,
-            existingWatchOptions,
-        );
-    }
-
     interface VerifyWatchOptions {
         json: object;
         additionalFiles?: vfs.FileSet;
@@ -51,37 +11,35 @@ describe("unittests:: config:: tsconfigParsingWatchOptions:: parseConfigFileText
     }
 
     function verifyWatchOptions(subScenario: string, scenario: () => VerifyWatchOptions[]) {
-        describe(subScenario, () => {
-            it("with json api", () => {
-                const baseline: string[] = [];
-                for (const { json, additionalFiles, existingWatchOptions } of scenario()) {
-                    addToBaseLine(baseline, json, getParsedCommandJson(json, additionalFiles, existingWatchOptions));
-                }
-                runBaseline(`${subScenario} with json api`, baseline);
-            });
-
-            it("with json source file api", () => {
-                const baseline: string[] = [];
-                for (const { json, additionalFiles, existingWatchOptions, } of scenario()) {
-                    addToBaseLine(baseline, json, getParsedCommandJsonNode(json, additionalFiles, existingWatchOptions));
-                }
-                runBaseline(`${subScenario} with jsonSourceFile api`, baseline);
-            });
+        baselineParseConfig({
+            scenario: "tsconfigParsingWatchOptions",
+            subScenario,
+            input: () => scenario().map(({ json, additionalFiles, existingWatchOptions }) => {
+                const jsonText = JSON.stringify(json, undefined, " ");
+                return {
+                    createHost: () => new fakes.ParseConfigHost(
+                        new vfs.FileSystem(
+                            /*ignoreCase*/ false,
+                            {
+                                cwd: "/",
+                                files: {
+                                    "/a.ts": "",
+                                    ...additionalFiles,
+                                    "/tsconfig.json": jsonText,
+                                }
+                            }
+                        )
+                    ),
+                    jsonText,
+                    configFileName: "tsconfig.json",
+                    existingWatchOptions,
+                    baselineParsed: (baseline, parsed) => {
+                        baseline.push(`Result: WatchOptions::`);
+                        baseline.push(JSON.stringify(parsed.watchOptions, undefined, " "));
+                    },
+                };
+            }),
         });
-        function addToBaseLine(baseline: string[], json: object, parsed: ts.ParsedCommandLine) {
-            baseline.push(`Input:: ${JSON.stringify(json, /*replacer*/ undefined, " ")}`);
-            baseline.push(`Result: WatchOptions::`);
-            baseline.push(JSON.stringify(parsed.watchOptions, /*replacer*/ undefined, " "));
-            baseline.push(`Result: Errors::`);
-            baseline.push(ts.formatDiagnosticsWithColorAndContext(parsed.errors, {
-                getCurrentDirectory: () => "/",
-                getCanonicalFileName: ts.identity,
-                getNewLine: () => "\n"
-            }));
-        }
-        function runBaseline(subScenario: string, baseline: readonly string[]) {
-            Harness.Baseline.runBaseline(`config/tsconfigParsingWatchOptions/${subScenario}.js`, baseline.join("\n"));
-        }
     }
 
     verifyWatchOptions("no watchOptions specified option", () => [{
diff --git a/src/testRunner/unittests/tsc/projectReferencesConfig.ts b/src/testRunner/unittests/tsc/projectReferencesConfig.ts
new file mode 100644
index 00000000000..17b26e89285
--- /dev/null
+++ b/src/testRunner/unittests/tsc/projectReferencesConfig.ts
@@ -0,0 +1,253 @@
+import * as ts from "../../_namespaces/ts";
+import { loadProjectFromFiles, verifyTsc } from "./helpers";
+
+function emptyModule() {
+    return "export { };";
+}
+
+/**
+ * Produces the text of a source file which imports all of the
+ * specified module names
+ */
+function moduleImporting(...names: string[]) {
+    return names.map((n, i) => `import * as mod_${i} from "${n}"`).join("\r\n");
+}
+
+function getConfig({ references, options, config }: {
+    references?: (string | ts.ProjectReference)[];
+    options?: ts.CompilerOptions;
+    config?: object
+} = {}) {
+    return JSON.stringify({
+        compilerOptions: {
+            composite: true,
+            outDir: "bin",
+            ...options
+        },
+        references: references?.map(r => {
+            if (typeof r === "string") {
+                return { path: r };
+            }
+            return r;
+        }) || [],
+        ...config,
+    }, undefined, " ");
+}
+
+describe("unittests:: config:: project-references meta check", () => {
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "default setup was created correctly",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig(),
+            "/primary/a.ts": emptyModule(),
+            "/secondary/tsconfig.json": getConfig({
+                references: ["../primary"]
+            }),
+            "/secondary/b.ts": moduleImporting("../primary/a"),
+        }),
+        commandLineArgs: ["--p", "/primary/tsconfig.json"]
+    });
+});
+
+/**
+ * Validate that we enforce the basic settings constraints for referenced projects
+ */
+describe("unittests:: config:: project-references constraint checking for settings", () => {
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "errors when declaration = false",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig({
+                options: {
+                    declaration: false
+                }
+            }),
+            "/primary/a.ts": emptyModule(),
+        }),
+        commandLineArgs: ["--p", "/primary/tsconfig.json"]
+    });
+
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "errors when the referenced project doesnt have composite",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig({
+                options: {
+                    composite: false
+                }
+            }),
+            "/primary/a.ts": emptyModule(),
+            "/reference/tsconfig.json": getConfig({
+                references: ["../primary"],
+                config: {
+                    files: ["b.ts"]
+                }
+            }),
+            "/reference/b.ts": moduleImporting("../primary/a"),
+        }),
+        commandLineArgs: ["--p", "/reference/tsconfig.json"]
+    });
+
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "does not error when the referenced project doesnt have composite if its a container project",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig({
+                options: {
+                    composite: false
+                }
+            }),
+            "/primary/a.ts": emptyModule(),
+            "/reference/tsconfig.json": getConfig({
+                references: ["../primary"],
+                config: {
+                    files: []
+                }
+            }),
+            "/reference/b.ts": moduleImporting("../primary/a"),
+        }),
+        commandLineArgs: ["--p", "/reference/tsconfig.json"]
+    });
+
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "errors when the file list is not exhaustive",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig({
+                config: {
+                    files: ["a.ts"]
+                }
+            }),
+            "/primary/a.ts": "import * as b from './b'",
+            "/primary/b.ts": "export {}",
+        }),
+        commandLineArgs: ["--p", "/primary/tsconfig.json"]
+    });
+
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "errors when the referenced project doesnt exist",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig({
+                references: ["../foo"]
+            }),
+            "/primary/a.ts": emptyModule(),
+        }),
+        commandLineArgs: ["--p", "/primary/tsconfig.json"]
+    });
+
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "errors when a prepended project reference doesnt set outFile",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig({
+                references: [{ path: "../someProj", prepend: true }],
+            }),
+            "/primary/a.ts": emptyModule(),
+            "/someProj/tsconfig.json": getConfig(),
+            "/someProj/b.ts": "const x = 100;",
+        }),
+        commandLineArgs: ["--p", "/primary/tsconfig.json", "--ignoreDeprecations", "5.0"]
+    });
+
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "errors when a prepended project reference output doesnt exist",
+        fs: () => loadProjectFromFiles({
+            "/primary/tsconfig.json": getConfig({
+                references: [{ path: "../someProj", prepend: true }],
+            }),
+            "/primary/a.ts": "const y = x;",
+            "/someProj/tsconfig.json": getConfig({
+                options: { outFile: "foo.js" }
+            }),
+            "/someProj/b.ts": "const x = 100;",
+        }),
+        commandLineArgs: ["--p", "/primary/tsconfig.json", "--ignoreDeprecations", "5.0"]
+    });
+});
+
+/**
+ * Path mapping behavior
+ */
+describe("unittests:: config:: project-references path mapping", () => {
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "redirects to the output dts file",
+        fs: () => loadProjectFromFiles({
+            "/alpha/tsconfig.json": getConfig(),
+            "/alpha/a.ts": "export const m: number = 3;",
+            "/alpha/bin/a.d.ts": emptyModule(),
+            "/beta/tsconfig.json": getConfig({
+                references: ["../alpha"]
+            }),
+            "/beta/b.ts": "import { m } from '../alpha/a'",
+        }),
+        commandLineArgs: ["--p", "/beta/tsconfig.json", "--explainFiles"]
+    });
+});
+
+describe("unittests:: config:: project-references nice-behavior", () => {
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "issues a nice error when the input file is missing",
+        fs: () => loadProjectFromFiles({
+            "/alpha/tsconfig.json": getConfig(),
+            "/alpha/a.ts": "export const m: number = 3;",
+            "/beta/tsconfig.json": getConfig({
+                references: ["../alpha"]
+            }),
+            "/beta/b.ts": "import { m } from '../alpha/a'",
+        }),
+        commandLineArgs: ["--p", "/beta/tsconfig.json"]
+    });
+
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "issues a nice error when the input file is missing when module reference is not relative",
+        fs: () => loadProjectFromFiles({
+            "/alpha/tsconfig.json": getConfig(),
+            "/alpha/a.ts": "export const m: number = 3;",
+            "/beta/tsconfig.json": getConfig({
+                references: ["../alpha"],
+                options: {
+                    baseUrl: "./",
+                    paths: {
+                        "@alpha/*": ["/alpha/*"]
+                    }
+                }
+            }),
+            "/beta/b.ts": "import { m } from '@alpha/a'",
+        }),
+        commandLineArgs: ["--p", "/beta/tsconfig.json"]
+    });
+});
+
+/**
+ * 'composite' behavior
+ */
+describe("unittests:: config:: project-references behavior changes under composite: true", () => {
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "doesnt infer the rootDir from source paths",
+        fs: () => loadProjectFromFiles({
+            "/alpha/tsconfig.json": getConfig(),
+            "/alpha/src/a.ts": "export const m: number = 3;",
+        }),
+        commandLineArgs: ["--p", "/alpha/tsconfig.json"]
+    });
+});
+
+describe("unittests:: config:: project-references errors when a file in a composite project occurs outside the root", () => {
+    verifyTsc({
+        scenario: "projectReferencesConfig",
+        subScenario: "errors when a file is outside the rootdir",
+        fs: () => loadProjectFromFiles({
+            "/alpha/tsconfig.json": getConfig(),
+            "/alpha/src/a.ts": "import * as b from '../../beta/b'",
+            "/beta/b.ts": "export { }",
+        }),
+        commandLineArgs: ["--p", "/alpha/tsconfig.json"]
+    });
+});
diff --git a/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case insensitive host.js b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case insensitive host.js
new file mode 100644
index 00000000000..25df25570d0
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case insensitive host.js	
@@ -0,0 +1,157 @@
+Fs::
+//// [c:/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [c:/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [c:/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [c:/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [c:/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [c:/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [c:/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [c:/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [c:/dev/extends.json]
+{"extends":42}
+
+//// [c:/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [c:/dev/extends3.json]
+{"extends":""}
+
+//// [c:/dev/extends4.json]
+{"extends":[""]}
+
+//// [c:/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [c:/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [c:/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [c:/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [c:/dev/main.ts]
+
+
+//// [c:/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [c:/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [c:/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/supplemental.ts]
+
+
+//// [c:/dev/tests/baselines/first/output.ts]
+
+
+//// [c:/dev/tests/scenarios/first.json]
+
+
+//// [c:/dev/tests/unit/spec.ts]
+
+
+//// [c:/dev/tests/utils.ts]
+
+
+//// [c:/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [c:/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+configFileName:: adds extendedSourceFiles from an array only once
+ExtendedSourceFiles::
+c:/dev/configs/extendsArrayFirst.json
+c:/dev/configs/extendsArraySecond.json
+c:/dev/configs/extendsArrayThird.json
+c:/dev/configs/extendsArrayFourth.json
+After reusing sourceFile ExtendedSourceFiles::
+c:/dev/configs/extendsArrayFirst.json
+c:/dev/configs/extendsArraySecond.json
+c:/dev/configs/extendsArrayThird.json
+c:/dev/configs/extendsArrayFourth.json
\ No newline at end of file
diff --git a/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case sensitive host.js b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case sensitive host.js
new file mode 100644
index 00000000000..8abed829c15
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles from an array only once under a case sensitive host.js	
@@ -0,0 +1,157 @@
+Fs::
+//// [/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [/dev/extends.json]
+{"extends":42}
+
+//// [/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [/dev/extends3.json]
+{"extends":""}
+
+//// [/dev/extends4.json]
+{"extends":[""]}
+
+//// [/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [/dev/main.ts]
+
+
+//// [/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/supplemental.ts]
+
+
+//// [/dev/tests/baselines/first/output.ts]
+
+
+//// [/dev/tests/scenarios/first.json]
+
+
+//// [/dev/tests/unit/spec.ts]
+
+
+//// [/dev/tests/utils.ts]
+
+
+//// [/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+configFileName:: adds extendedSourceFiles from an array only once
+ExtendedSourceFiles::
+/dev/configs/extendsArrayFirst.json
+/dev/configs/extendsArraySecond.json
+/dev/configs/extendsArrayThird.json
+/dev/configs/extendsArrayFourth.json
+After reusing sourceFile ExtendedSourceFiles::
+/dev/configs/extendsArrayFirst.json
+/dev/configs/extendsArraySecond.json
+/dev/configs/extendsArrayThird.json
+/dev/configs/extendsArrayFourth.json
\ No newline at end of file
diff --git a/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case insensitive host.js b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case insensitive host.js
new file mode 100644
index 00000000000..d65f68384f0
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case insensitive host.js	
@@ -0,0 +1,155 @@
+Fs::
+//// [c:/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [c:/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [c:/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [c:/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [c:/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [c:/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [c:/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [c:/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [c:/dev/extends.json]
+{"extends":42}
+
+//// [c:/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [c:/dev/extends3.json]
+{"extends":""}
+
+//// [c:/dev/extends4.json]
+{"extends":[""]}
+
+//// [c:/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [c:/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [c:/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [c:/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [c:/dev/main.ts]
+
+
+//// [c:/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [c:/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [c:/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/supplemental.ts]
+
+
+//// [c:/dev/tests/baselines/first/output.ts]
+
+
+//// [c:/dev/tests/scenarios/first.json]
+
+
+//// [c:/dev/tests/unit/spec.ts]
+
+
+//// [c:/dev/tests/utils.ts]
+
+
+//// [c:/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [c:/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+configFileName:: adds extendedSourceFiles only once
+ExtendedSourceFiles::
+c:/dev/configs/third.json
+c:/dev/configs/second.json
+c:/dev/configs/base.json
+After reusing sourceFile ExtendedSourceFiles::
+c:/dev/configs/third.json
+c:/dev/configs/second.json
+c:/dev/configs/base.json
\ No newline at end of file
diff --git a/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case sensitive host.js b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case sensitive host.js
new file mode 100644
index 00000000000..06001b27e98
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/adds extendedSourceFiles only once under a case sensitive host.js	
@@ -0,0 +1,155 @@
+Fs::
+//// [/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [/dev/extends.json]
+{"extends":42}
+
+//// [/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [/dev/extends3.json]
+{"extends":""}
+
+//// [/dev/extends4.json]
+{"extends":[""]}
+
+//// [/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [/dev/main.ts]
+
+
+//// [/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/supplemental.ts]
+
+
+//// [/dev/tests/baselines/first/output.ts]
+
+
+//// [/dev/tests/scenarios/first.json]
+
+
+//// [/dev/tests/unit/spec.ts]
+
+
+//// [/dev/tests/utils.ts]
+
+
+//// [/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+configFileName:: adds extendedSourceFiles only once
+ExtendedSourceFiles::
+/dev/configs/third.json
+/dev/configs/second.json
+/dev/configs/base.json
+After reusing sourceFile ExtendedSourceFiles::
+/dev/configs/third.json
+/dev/configs/second.json
+/dev/configs/base.json
\ No newline at end of file
diff --git a/tests/baselines/reference/config/configurationExtension/under a case insensitive host with json api.js b/tests/baselines/reference/config/configurationExtension/under a case insensitive host with json api.js
new file mode 100644
index 00000000000..50a875b2cd8
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/under a case insensitive host with json api.js	
@@ -0,0 +1,443 @@
+Fs::
+//// [c:/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [c:/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [c:/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [c:/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [c:/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [c:/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [c:/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [c:/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [c:/dev/extends.json]
+{"extends":42}
+
+//// [c:/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [c:/dev/extends3.json]
+{"extends":""}
+
+//// [c:/dev/extends4.json]
+{"extends":[""]}
+
+//// [c:/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [c:/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [c:/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [c:/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [c:/dev/main.ts]
+
+
+//// [c:/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [c:/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [c:/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/supplemental.ts]
+
+
+//// [c:/dev/tests/baselines/first/output.ts]
+
+
+//// [c:/dev/tests/scenarios/first.json]
+
+
+//// [c:/dev/tests/unit/spec.ts]
+
+
+//// [c:/dev/tests/utils.ts]
+
+
+//// [c:/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [c:/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+can resolve an extension with a base extension
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "tsconfig.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts
+Errors::
+
+
+can resolve an extension with a base extension that overrides options
+configFileName:: tsconfig.nostrictnull.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": false,
+ "configFilePath": "tsconfig.nostrictnull.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts
+Errors::
+
+
+can report errors on circular imports
+configFileName:: circular.json
+CompilerOptions::
+{
+ "module": 2,
+ "configFilePath": "circular.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS18000: Circularity detected while resolving configuration: c:/dev/circular.json -> c:/dev/circular2.json -> c:/dev/circular.json
+
+
+can report missing configurations
+configFileName:: missing.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "missing.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS6053: File './missing2' not found.
+
+
+can report errors in extended configs
+configFileName:: failure.json
+CompilerOptions::
+{
+ "typeRoots": [],
+ "configFilePath": "failure.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+failure2.json:1:2 - error TS6114: Unknown option 'excludes'. Did you mean 'exclude'?
+
+1 {"excludes":["*.js"]}
+   ~~~~~~~~~~
+
+
+can error when 'extends' is not a string or Array
+configFileName:: extends.json
+CompilerOptions::
+{
+ "configFilePath": "extends.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS5024: Compiler option 'extends' requires a value of type string or Array.
+
+
+can error when 'extends' is given an empty string
+configFileName:: extends3.json
+CompilerOptions::
+{
+ "configFilePath": "extends3.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+
+can error when 'extends' is given an empty string in an array
+configFileName:: extends4.json
+CompilerOptions::
+{
+ "configFilePath": "extends4.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+
+can overwrite compiler options using extended 'null'
+configFileName:: configs/third.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "configs/third.json"
+}
+FileNames::
+c:/dev/supplemental.ts
+Errors::
+
+
+can overwrite top-level options using extended 'null'
+configFileName:: configs/fourth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fourth.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can overwrite top-level files using extended []
+configFileName:: configs/fifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fifth.json"
+}
+FileNames::
+c:/dev/tests/utils.ts
+Errors::
+
+
+can lookup via tsconfig field
+configFileName:: tsconfig.extendsBox.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBox.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path
+configFileName:: tsconfig.extendsStrict.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrict.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via non-redirected-to package-relative path
+configFileName:: tsconfig.extendsUnStrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsUnStrict.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path with extension
+configFileName:: tsconfig.extendsStrictExtension.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrictExtension.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig
+configFileName:: tsconfig.extendsBoxImplied.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImplied.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory
+configFileName:: tsconfig.extendsBoxImpliedUnstrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrict.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with name
+configFileName:: tsconfig.extendsBoxImpliedUnstrictExtension.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrictExtension.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with extension
+configFileName:: tsconfig.extendsBoxImpliedPath.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImpliedPath.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an package.json exports
+configFileName:: tsconfig.extendsFoo.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsFoo.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can overwrite top-level compilerOptions
+configFileName:: configs/extendsArrayFifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": false,
+ "strictNullChecks": false,
+ "module": 4,
+ "configFilePath": "configs/extendsArrayFifth.json"
+}
+FileNames::
+
+Errors::
+
+
+can report missing configurations
+configFileName:: extendsArrayFails.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "extendsArrayFails.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS6053: File './missingFile' not found.
+
+
+can error when 'extends' is not a string or Array2
+configFileName:: extendsArrayFails2.json
+CompilerOptions::
+{
+ "configFilePath": "extendsArrayFails2.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS5024: Compiler option 'extends' requires a value of type string.
+
diff --git a/tests/baselines/reference/config/configurationExtension/under a case insensitive host with jsonSourceFile api.js b/tests/baselines/reference/config/configurationExtension/under a case insensitive host with jsonSourceFile api.js
new file mode 100644
index 00000000000..9e7dad1da7c
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/under a case insensitive host with jsonSourceFile api.js	
@@ -0,0 +1,461 @@
+Fs::
+//// [c:/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [c:/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [c:/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [c:/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [c:/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [c:/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [c:/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [c:/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [c:/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [c:/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [c:/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [c:/dev/extends.json]
+{"extends":42}
+
+//// [c:/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [c:/dev/extends3.json]
+{"extends":""}
+
+//// [c:/dev/extends4.json]
+{"extends":[""]}
+
+//// [c:/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [c:/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [c:/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [c:/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [c:/dev/main.ts]
+
+
+//// [c:/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [c:/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [c:/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [c:/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [c:/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [c:/dev/supplemental.ts]
+
+
+//// [c:/dev/tests/baselines/first/output.ts]
+
+
+//// [c:/dev/tests/scenarios/first.json]
+
+
+//// [c:/dev/tests/unit/spec.ts]
+
+
+//// [c:/dev/tests/utils.ts]
+
+
+//// [c:/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [c:/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [c:/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+can resolve an extension with a base extension
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "tsconfig.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts
+Errors::
+
+
+can resolve an extension with a base extension that overrides options
+configFileName:: tsconfig.nostrictnull.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": false,
+ "configFilePath": "tsconfig.nostrictnull.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts
+Errors::
+
+
+can report errors on circular imports
+configFileName:: circular.json
+CompilerOptions::
+{
+ "module": 2,
+ "configFilePath": "circular.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+error TS18000: Circularity detected while resolving configuration: c:/dev/circular.json -> c:/dev/circular2.json -> c:/dev/circular.json
+
+
+can report missing configurations
+configFileName:: missing.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "missing.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+missing.json:1:12 - error TS6053: File './missing2' not found.
+
+1 {"extends":"./missing2","compilerOptions":{"types":[]}}
+             ~~~~~~~~~~~~
+
+
+can report errors in extended configs
+configFileName:: failure.json
+CompilerOptions::
+{
+ "typeRoots": [],
+ "configFilePath": "failure.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+failure2.json:1:2 - error TS6114: Unknown option 'excludes'. Did you mean 'exclude'?
+
+1 {"excludes":["*.js"]}
+   ~~~~~~~~~~
+
+
+can error when 'extends' is not a string or Array
+configFileName:: extends.json
+CompilerOptions::
+{
+ "configFilePath": "extends.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+extends.json:1:12 - error TS5024: Compiler option 'extends' requires a value of type string or Array.
+
+1 {"extends":42}
+             ~~
+
+
+can error when 'extends' is given an empty string
+configFileName:: extends3.json
+CompilerOptions::
+{
+ "configFilePath": "extends3.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+extends3.json:1:12 - error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+1 {"extends":""}
+             ~~
+
+
+can error when 'extends' is given an empty string in an array
+configFileName:: extends4.json
+CompilerOptions::
+{
+ "configFilePath": "extends4.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+extends4.json:1:13 - error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+1 {"extends":[""]}
+              ~~
+
+
+can overwrite compiler options using extended 'null'
+configFileName:: configs/third.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "configs/third.json"
+}
+FileNames::
+c:/dev/supplemental.ts
+Errors::
+
+
+can overwrite top-level options using extended 'null'
+configFileName:: configs/fourth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fourth.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can overwrite top-level files using extended []
+configFileName:: configs/fifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fifth.json"
+}
+FileNames::
+c:/dev/tests/utils.ts
+Errors::
+
+
+can lookup via tsconfig field
+configFileName:: tsconfig.extendsBox.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBox.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path
+configFileName:: tsconfig.extendsStrict.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrict.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via non-redirected-to package-relative path
+configFileName:: tsconfig.extendsUnStrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsUnStrict.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path with extension
+configFileName:: tsconfig.extendsStrictExtension.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrictExtension.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig
+configFileName:: tsconfig.extendsBoxImplied.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImplied.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory
+configFileName:: tsconfig.extendsBoxImpliedUnstrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrict.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with name
+configFileName:: tsconfig.extendsBoxImpliedUnstrictExtension.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrictExtension.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with extension
+configFileName:: tsconfig.extendsBoxImpliedPath.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImpliedPath.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can lookup via an package.json exports
+configFileName:: tsconfig.extendsFoo.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsFoo.json"
+}
+FileNames::
+c:/dev/main.ts
+Errors::
+
+
+can overwrite top-level compilerOptions
+configFileName:: configs/extendsArrayFifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": false,
+ "strictNullChecks": false,
+ "module": 4,
+ "configFilePath": "configs/extendsArrayFifth.json"
+}
+FileNames::
+
+Errors::
+
+
+can report missing configurations
+configFileName:: extendsArrayFails.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "extendsArrayFails.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+extendsArrayFails.json:1:13 - error TS6053: File './missingFile' not found.
+
+1 {"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+              ~~~~~~~~~~~~~~~
+
+
+can error when 'extends' is not a string or Array2
+configFileName:: extendsArrayFails2.json
+CompilerOptions::
+{
+ "configFilePath": "extendsArrayFails2.json"
+}
+FileNames::
+c:/dev/main.ts,c:/dev/supplemental.ts,c:/dev/tests/utils.ts,c:/dev/tests/baselines/first/output.ts,c:/dev/tests/unit/spec.ts
+Errors::
+extendsArrayFails2.json:1:13 - error TS5024: Compiler option 'extends' requires a value of type string.
+
+1 {"extends":[42]}
+              ~~
+
diff --git a/tests/baselines/reference/config/configurationExtension/under a case sensitive host with json api.js b/tests/baselines/reference/config/configurationExtension/under a case sensitive host with json api.js
new file mode 100644
index 00000000000..4f0167c4cda
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/under a case sensitive host with json api.js	
@@ -0,0 +1,443 @@
+Fs::
+//// [/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [/dev/extends.json]
+{"extends":42}
+
+//// [/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [/dev/extends3.json]
+{"extends":""}
+
+//// [/dev/extends4.json]
+{"extends":[""]}
+
+//// [/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [/dev/main.ts]
+
+
+//// [/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/supplemental.ts]
+
+
+//// [/dev/tests/baselines/first/output.ts]
+
+
+//// [/dev/tests/scenarios/first.json]
+
+
+//// [/dev/tests/unit/spec.ts]
+
+
+//// [/dev/tests/utils.ts]
+
+
+//// [/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+can resolve an extension with a base extension
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "tsconfig.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts
+Errors::
+
+
+can resolve an extension with a base extension that overrides options
+configFileName:: tsconfig.nostrictnull.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": false,
+ "configFilePath": "tsconfig.nostrictnull.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts
+Errors::
+
+
+can report errors on circular imports
+configFileName:: circular.json
+CompilerOptions::
+{
+ "module": 2,
+ "configFilePath": "circular.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS18000: Circularity detected while resolving configuration: /dev/circular.json -> /dev/circular2.json -> /dev/circular.json
+
+
+can report missing configurations
+configFileName:: missing.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "missing.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS6053: File './missing2' not found.
+
+
+can report errors in extended configs
+configFileName:: failure.json
+CompilerOptions::
+{
+ "typeRoots": [],
+ "configFilePath": "failure.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+failure2.json:1:2 - error TS6114: Unknown option 'excludes'. Did you mean 'exclude'?
+
+1 {"excludes":["*.js"]}
+   ~~~~~~~~~~
+
+
+can error when 'extends' is not a string or Array
+configFileName:: extends.json
+CompilerOptions::
+{
+ "configFilePath": "extends.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS5024: Compiler option 'extends' requires a value of type string or Array.
+
+
+can error when 'extends' is given an empty string
+configFileName:: extends3.json
+CompilerOptions::
+{
+ "configFilePath": "extends3.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+
+can error when 'extends' is given an empty string in an array
+configFileName:: extends4.json
+CompilerOptions::
+{
+ "configFilePath": "extends4.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+
+can overwrite compiler options using extended 'null'
+configFileName:: configs/third.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "configs/third.json"
+}
+FileNames::
+/dev/supplemental.ts
+Errors::
+
+
+can overwrite top-level options using extended 'null'
+configFileName:: configs/fourth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fourth.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can overwrite top-level files using extended []
+configFileName:: configs/fifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fifth.json"
+}
+FileNames::
+/dev/tests/utils.ts
+Errors::
+
+
+can lookup via tsconfig field
+configFileName:: tsconfig.extendsBox.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBox.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path
+configFileName:: tsconfig.extendsStrict.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrict.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via non-redirected-to package-relative path
+configFileName:: tsconfig.extendsUnStrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsUnStrict.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path with extension
+configFileName:: tsconfig.extendsStrictExtension.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrictExtension.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig
+configFileName:: tsconfig.extendsBoxImplied.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImplied.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory
+configFileName:: tsconfig.extendsBoxImpliedUnstrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrict.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with name
+configFileName:: tsconfig.extendsBoxImpliedUnstrictExtension.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrictExtension.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with extension
+configFileName:: tsconfig.extendsBoxImpliedPath.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImpliedPath.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an package.json exports
+configFileName:: tsconfig.extendsFoo.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsFoo.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can overwrite top-level compilerOptions
+configFileName:: configs/extendsArrayFifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": false,
+ "strictNullChecks": false,
+ "module": 4,
+ "configFilePath": "configs/extendsArrayFifth.json"
+}
+FileNames::
+
+Errors::
+
+
+can report missing configurations
+configFileName:: extendsArrayFails.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "extendsArrayFails.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS6053: File './missingFile' not found.
+
+
+can error when 'extends' is not a string or Array2
+configFileName:: extendsArrayFails2.json
+CompilerOptions::
+{
+ "configFilePath": "extendsArrayFails2.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS5024: Compiler option 'extends' requires a value of type string.
+
diff --git a/tests/baselines/reference/config/configurationExtension/under a case sensitive host with jsonSourceFile api.js b/tests/baselines/reference/config/configurationExtension/under a case sensitive host with jsonSourceFile api.js
new file mode 100644
index 00000000000..d2aefd8f29b
--- /dev/null
+++ b/tests/baselines/reference/config/configurationExtension/under a case sensitive host with jsonSourceFile api.js	
@@ -0,0 +1,461 @@
+Fs::
+//// [/dev/circular.json]
+{"extends":"./circular2","compilerOptions":{"module":"amd"}}
+
+//// [/dev/circular2.json]
+{"extends":"./circular","compilerOptions":{"module":"commonjs"}}
+
+//// [/dev/configs/base.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFifth.json]
+{"extends":["./extendsArrayFirst","./extendsArraySecond","./extendsArrayThird","./extendsArrayFourth"],"files":[]}
+
+//// [/dev/configs/extendsArrayFirst.json]
+{"compilerOptions":{"allowJs":true,"noImplicitAny":true,"strictNullChecks":true}}
+
+//// [/dev/configs/extendsArrayFourth.json]
+{"compilerOptions":{"module":"system","strictNullChecks":false},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/extendsArraySecond.json]
+{"compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/extendsArrayThird.json]
+{"compilerOptions":{"module":null,"noImplicitAny":false},"extends":"./extendsArrayFirst","include":["../supplemental.*"]}
+
+//// [/dev/configs/fifth.json]
+{"extends":"./fourth","include":["../tests/utils.ts"],"files":[]}
+
+//// [/dev/configs/first.json]
+{"extends":"./base","compilerOptions":{"module":"commonjs"},"files":["../main.ts"]}
+
+//// [/dev/configs/fourth.json]
+{"extends":"./third","compilerOptions":{"module":"system"},"include":null,"files":["../main.ts"]}
+
+//// [/dev/configs/second.json]
+{"extends":"./base","compilerOptions":{"module":"amd"},"include":["../supplemental.*"]}
+
+//// [/dev/configs/tests.json]
+{"compilerOptions":{"preserveConstEnums":true,"removeComments":false,"sourceMap":true},"exclude":["../tests/baselines","../tests/scenarios"],"include":["../tests/**/*.ts"]}
+
+//// [/dev/configs/third.json]
+{"extends":"./second","compilerOptions":{"module":null},"include":["../supplemental.*"]}
+
+//// [/dev/extends.json]
+{"extends":42}
+
+//// [/dev/extends2.json]
+{"extends":"configs/base"}
+
+//// [/dev/extends3.json]
+{"extends":""}
+
+//// [/dev/extends4.json]
+{"extends":[""]}
+
+//// [/dev/extendsArrayFails.json]
+{"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+
+//// [/dev/extendsArrayFails2.json]
+{"extends":[42]}
+
+//// [/dev/failure.json]
+{"extends":"./failure2.json","compilerOptions":{"typeRoots":[]}}
+
+//// [/dev/failure2.json]
+{"excludes":["*.js"]}
+
+//// [/dev/main.ts]
+
+
+//// [/dev/missing.json]
+{"extends":"./missing2","compilerOptions":{"types":[]}}
+
+//// [/dev/node_modules/@foo/tsconfig/package.json]
+{"name":"@foo/tsconfig","version":"1.0.0","exports":{".":"./src/tsconfig.json"}}
+
+//// [/dev/node_modules/@foo/tsconfig/src/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/package.json]
+{"name":"config-box","version":"1.0.0","tsconfig":"./strict.json"}
+
+//// [/dev/node_modules/config-box/strict.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box/unstrict.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/node_modules/config-box-implied/package.json]
+{"name":"config-box-implied","version":"1.0.0"}
+
+//// [/dev/node_modules/config-box-implied/tsconfig.json]
+{"compilerOptions":{"strict":true}}
+
+//// [/dev/node_modules/config-box-implied/unstrict/tsconfig.json]
+{"compilerOptions":{"strict":false}}
+
+//// [/dev/supplemental.ts]
+
+
+//// [/dev/tests/baselines/first/output.ts]
+
+
+//// [/dev/tests/scenarios/first.json]
+
+
+//// [/dev/tests/unit/spec.ts]
+
+
+//// [/dev/tests/utils.ts]
+
+
+//// [/dev/tsconfig.extendsBox.json]
+{"extends":"config-box","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImplied.json]
+{"extends":"config-box-implied","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedPath.json]
+{"extends":"config-box-implied/tsconfig.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrict.json]
+{"extends":"config-box-implied/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsBoxImpliedUnstrictExtension.json]
+{"extends":"config-box-implied/unstrict/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsFoo.json]
+{"extends":"@foo/tsconfig","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrict.json]
+{"extends":"config-box/strict","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsStrictExtension.json]
+{"extends":"config-box/strict.json","files":["main.ts"]}
+
+//// [/dev/tsconfig.extendsUnStrict.json]
+{"extends":"config-box/unstrict","files":["main.ts"]}
+
+//// [/dev/tsconfig.json]
+{"extends":"./configs/base","files":["main.ts","supplemental.ts"]}
+
+//// [/dev/tsconfig.nostrictnull.json]
+{"extends":"./tsconfig","compilerOptions":{"strictNullChecks":false}}
+
+
+can resolve an extension with a base extension
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "tsconfig.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts
+Errors::
+
+
+can resolve an extension with a base extension that overrides options
+configFileName:: tsconfig.nostrictnull.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": false,
+ "configFilePath": "tsconfig.nostrictnull.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts
+Errors::
+
+
+can report errors on circular imports
+configFileName:: circular.json
+CompilerOptions::
+{
+ "module": 2,
+ "configFilePath": "circular.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+error TS18000: Circularity detected while resolving configuration: /dev/circular.json -> /dev/circular2.json -> /dev/circular.json
+
+
+can report missing configurations
+configFileName:: missing.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "missing.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+missing.json:1:12 - error TS6053: File './missing2' not found.
+
+1 {"extends":"./missing2","compilerOptions":{"types":[]}}
+             ~~~~~~~~~~~~
+
+
+can report errors in extended configs
+configFileName:: failure.json
+CompilerOptions::
+{
+ "typeRoots": [],
+ "configFilePath": "failure.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+failure2.json:1:2 - error TS6114: Unknown option 'excludes'. Did you mean 'exclude'?
+
+1 {"excludes":["*.js"]}
+   ~~~~~~~~~~
+
+
+can error when 'extends' is not a string or Array
+configFileName:: extends.json
+CompilerOptions::
+{
+ "configFilePath": "extends.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+extends.json:1:12 - error TS5024: Compiler option 'extends' requires a value of type string or Array.
+
+1 {"extends":42}
+             ~~
+
+
+can error when 'extends' is given an empty string
+configFileName:: extends3.json
+CompilerOptions::
+{
+ "configFilePath": "extends3.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+extends3.json:1:12 - error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+1 {"extends":""}
+             ~~
+
+
+can error when 'extends' is given an empty string in an array
+configFileName:: extends4.json
+CompilerOptions::
+{
+ "configFilePath": "extends4.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+extends4.json:1:13 - error TS18051: Compiler option 'extends' cannot be given an empty string.
+
+1 {"extends":[""]}
+              ~~
+
+
+can overwrite compiler options using extended 'null'
+configFileName:: configs/third.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "configFilePath": "configs/third.json"
+}
+FileNames::
+/dev/supplemental.ts
+Errors::
+
+
+can overwrite top-level options using extended 'null'
+configFileName:: configs/fourth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fourth.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can overwrite top-level files using extended []
+configFileName:: configs/fifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": true,
+ "strictNullChecks": true,
+ "module": 4,
+ "configFilePath": "configs/fifth.json"
+}
+FileNames::
+/dev/tests/utils.ts
+Errors::
+
+
+can lookup via tsconfig field
+configFileName:: tsconfig.extendsBox.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBox.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path
+configFileName:: tsconfig.extendsStrict.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrict.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via non-redirected-to package-relative path
+configFileName:: tsconfig.extendsUnStrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsUnStrict.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via package-relative path with extension
+configFileName:: tsconfig.extendsStrictExtension.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsStrictExtension.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig
+configFileName:: tsconfig.extendsBoxImplied.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImplied.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory
+configFileName:: tsconfig.extendsBoxImpliedUnstrict.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrict.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with name
+configFileName:: tsconfig.extendsBoxImpliedUnstrictExtension.json
+CompilerOptions::
+{
+ "strict": false,
+ "configFilePath": "tsconfig.extendsBoxImpliedUnstrictExtension.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an implicit tsconfig in a package-relative directory with extension
+configFileName:: tsconfig.extendsBoxImpliedPath.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsBoxImpliedPath.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can lookup via an package.json exports
+configFileName:: tsconfig.extendsFoo.json
+CompilerOptions::
+{
+ "strict": true,
+ "configFilePath": "tsconfig.extendsFoo.json"
+}
+FileNames::
+/dev/main.ts
+Errors::
+
+
+can overwrite top-level compilerOptions
+configFileName:: configs/extendsArrayFifth.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "noImplicitAny": false,
+ "strictNullChecks": false,
+ "module": 4,
+ "configFilePath": "configs/extendsArrayFifth.json"
+}
+FileNames::
+
+Errors::
+
+
+can report missing configurations
+configFileName:: extendsArrayFails.json
+CompilerOptions::
+{
+ "types": [],
+ "configFilePath": "extendsArrayFails.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+extendsArrayFails.json:1:13 - error TS6053: File './missingFile' not found.
+
+1 {"extends":["./missingFile"],"compilerOptions":{"types":[]}}
+              ~~~~~~~~~~~~~~~
+
+
+can error when 'extends' is not a string or Array2
+configFileName:: extendsArrayFails2.json
+CompilerOptions::
+{
+ "configFilePath": "extendsArrayFails2.json"
+}
+FileNames::
+/dev/main.ts,/dev/supplemental.ts,/dev/tests/utils.ts,/dev/tests/baselines/first/output.ts,/dev/tests/unit/spec.ts
+Errors::
+extendsArrayFails2.json:1:13 - error TS5024: Compiler option 'extends' requires a value of type string.
+
+1 {"extends":[42]}
+              ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Allow trailing comments with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Allow trailing comments with jsonSourceFile api.js
new file mode 100644
index 00000000000..e2426e5f2c3
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Allow trailing comments with jsonSourceFile api.js	
@@ -0,0 +1,18 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{} // no options
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file as an array with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file as an array with jsonSourceFile api.js
new file mode 100644
index 00000000000..8dd1abf9d21
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file as an array with jsonSourceFile api.js	
@@ -0,0 +1,34 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+[{
+            "compilerOptions": {
+                "target": "esnext"
+            }
+        }]
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "target": 99,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:1:1 - error TS5092: The root value of a 'tsconfig.json' file must be an object.
+
+  1 [{
+    ~~
+  2             "compilerOptions": {
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+... 
+  4             }
+    ~~~~~~~~~~~~~
+  5         }]
+    ~~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray leading characters with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray leading characters with jsonSourceFile api.js
new file mode 100644
index 00000000000..c279e51a5fb
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray leading characters with jsonSourceFile api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+blah {
+            "compilerOptions": {
+                "target": "esnext"
+            }
+        }
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "target": 99,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:1:1 - error TS1136: Property assignment expected.
+
+1 blah {
+  ~~~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray trailing characters with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray trailing characters with jsonSourceFile api.js
new file mode 100644
index 00000000000..576fd7db78e
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert a tsconfig file with stray trailing characters with jsonSourceFile api.js	
@@ -0,0 +1,34 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+            "compilerOptions": {
+                "target": "esnext"
+            }
+        } blah
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "target": 99,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:1:1 - error TS5092: The root value of a 'tsconfig.json' file must be an object.
+
+  1 {
+    ~
+  2             "compilerOptions": {
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+... 
+  4             }
+    ~~~~~~~~~~~~~
+  5         } blah
+    ~~~~~~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with json api.js
new file mode 100644
index 00000000000..1e8650209fa
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with json api.js	
@@ -0,0 +1,44 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..1e8650209fa
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,44 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with json api.js
new file mode 100644
index 00000000000..3c67eb6c08c
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with json api.js	
@@ -0,0 +1,45 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "allowJs": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": false,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..3c67eb6c08c
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format jsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,45 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "allowJs": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": false,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with json api.js
new file mode 100644
index 00000000000..4b35dd8cc8a
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with json api.js	
@@ -0,0 +1,39 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..4b35dd8cc8a
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,39 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with json api.js
new file mode 100644
index 00000000000..24bfd8aeed5
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with json api.js	
@@ -0,0 +1,41 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "allowJs": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "allowJs": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..24bfd8aeed5
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert correctly format tsconfig.json with allowJs is false to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,41 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "allowJs": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "es2015.symbol"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "allowJs": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts",
+  "lib.es2015.symbol.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with json api.js
new file mode 100644
index 00000000000..02ee479e8cd
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with json api.js	
@@ -0,0 +1,23 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..02ee479e8cd
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default jsconfig.json to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,23 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with json api.js
new file mode 100644
index 00000000000..0890fd95586
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with json api.js	
@@ -0,0 +1,18 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..0890fd95586
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert default tsconfig.json to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,18 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with json api.js
new file mode 100644
index 00000000000..a11242e30a5
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with json api.js	
@@ -0,0 +1,31 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": []
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..a11242e30a5
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of libs to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,31 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": []
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with json api.js
new file mode 100644
index 00000000000..93647f7bdea
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with json api.js	
@@ -0,0 +1,23 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": []
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..93647f7bdea
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty option of moduleSuffixes to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,23 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": []
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js
new file mode 100644
index 00000000000..cfea7b850ca
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with json api.js	
@@ -0,0 +1,34 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..e0895380981
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs array to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,37 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:8:4 - error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
+8    ""
+     ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js
new file mode 100644
index 00000000000..021162067c7
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with json api.js	
@@ -0,0 +1,37 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..5800ae86e6b
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of libs to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,40 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:9:4 - error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
+9    ""
+     ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with json api.js
new file mode 100644
index 00000000000..08442f6d71d
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with json api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": [
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [
+  ""
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..08442f6d71d
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes single to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": [
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [
+  ""
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with json api.js
new file mode 100644
index 00000000000..52ced41a915
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with json api.js	
@@ -0,0 +1,29 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": [
+   ".ios",
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [
+  ".ios",
+  ""
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..52ced41a915
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert empty string option of moduleSuffixes to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,29 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": [
+   ".ios",
+   ""
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [
+  ".ios",
+  ""
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with json api.js
new file mode 100644
index 00000000000..cf59459a5d2
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with json api.js	
@@ -0,0 +1,31 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "jsx": ""
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--jsx' option must be: 'preserve', 'react-native', 'react', 'react-jsx', 'react-jsxdev'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..054fd964901
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of jsx to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,34 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "jsx": ""
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:7:10 - error TS6046: Argument for '--jsx' option must be: 'preserve', 'react-native', 'react', 'react-jsx', 'react-jsxdev'.
+
+7   "jsx": ""
+           ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js
new file mode 100644
index 00000000000..df1ad098ca0
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with json api.js	
@@ -0,0 +1,39 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "incorrectLib"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..5bffe79451e
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of libs to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,42 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "es5",
+   "es2015.core",
+   "incorrectLib"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [
+  "lib.es5.d.ts",
+  "lib.es2015.core.d.ts"
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:10:4 - error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
+10    "incorrectLib"
+      ~~~~~~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with json api.js
new file mode 100644
index 00000000000..3f98e115692
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with json api.js	
@@ -0,0 +1,29 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--module' option must be: 'none', 'commonjs', 'amd', 'system', 'umd', 'es6', 'es2015', 'es2020', 'es2022', 'esnext', 'node16', 'nodenext'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..cb967c5a0a3
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,32 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:3:13 - error TS6046: Argument for '--module' option must be: 'none', 'commonjs', 'amd', 'system', 'umd', 'es6', 'es2015', 'es2020', 'es2022', 'esnext', 'node16', 'nodenext'.
+
+3   "module": "",
+              ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with json api.js
new file mode 100644
index 00000000000..363c7ebffb6
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with json api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleResolution": "",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--moduleResolution' option must be: 'node10', 'classic', 'node16', 'nodenext', 'bundler'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..9085f8a5386
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of module-resolution to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,30 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleResolution": "",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:3:23 - error TS6046: Argument for '--moduleResolution' option must be: 'node10', 'classic', 'node16', 'nodenext', 'bundler'.
+
+3   "moduleResolution": "",
+                        ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with json api.js
new file mode 100644
index 00000000000..f30c5f75816
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with json api.js	
@@ -0,0 +1,29 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "newLine": "",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--newLine' option must be: 'crlf', 'lf'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..0e68f7a123d
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of newLine to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,32 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "newLine": "",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:3:14 - error TS6046: Argument for '--newLine' option must be: 'crlf', 'lf'.
+
+3   "newLine": "",
+               ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with json api.js
new file mode 100644
index 00000000000..92a98d406fe
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with json api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "target": "",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--target' option must be: 'es3', 'es5', 'es6', 'es2015', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'esnext'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..6389e6a9a69
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrect option of target to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,30 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "target": "",
+  "noImplicitAny": false,
+  "sourceMap": false
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:3:13 - error TS6046: Argument for '--target' option must be: 'es3', 'es5', 'es6', 'es2015', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'esnext'.
+
+3   "target": "",
+              ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with json api.js
new file mode 100644
index 00000000000..d83c6e50cd9
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with json api.js	
@@ -0,0 +1,28 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "compilerOptions": {
+  "modu": "commonjs"
+ }
+}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+error TS5023: Unknown compiler option 'modu'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..d20b5a97283
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format jsconfig.json to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,31 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "compilerOptions": {
+  "modu": "commonjs"
+ }
+}
+
+
+configFileName:: jsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": 2,
+ "allowSyntheticDefaultImports": true,
+ "skipLibCheck": true,
+ "noEmit": true,
+ "configFilePath": "jsconfig.json"
+}
+Errors::
+jsconfig.json:3:3 - error TS5023: Unknown compiler option 'modu'.
+
+3   "modu": "commonjs"
+    ~~~~~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with json api.js
new file mode 100644
index 00000000000..34697eac42e
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with json api.js	
@@ -0,0 +1,23 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "modu": "commonjs"
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS5023: Unknown compiler option 'modu'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..15f0de5e8f9
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert incorrectly format tsconfig.json to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,26 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "modu": "commonjs"
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:3:3 - error TS5023: Unknown compiler option 'modu'.
+
+3   "modu": "commonjs"
+    ~~~~~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with json api.js
new file mode 100644
index 00000000000..814f4b9bf6d
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with json api.js	
@@ -0,0 +1,25 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "allowJs": true,
+  "maxNodeModuleJsDepth": -1
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": -1,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with jsonSourceFile api.js
new file mode 100644
index 00000000000..814f4b9bf6d
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert negative numbers in tsconfig.json with jsonSourceFile api.js	
@@ -0,0 +1,25 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "allowJs": true,
+  "maxNodeModuleJsDepth": -1
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "allowJs": true,
+ "maxNodeModuleJsDepth": -1,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js
new file mode 100644
index 00000000000..82972a45514
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with json api.js	
@@ -0,0 +1,34 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "   "
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..da2cbcca93d
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of libs to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,37 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "module": "commonjs",
+  "target": "es5",
+  "noImplicitAny": false,
+  "sourceMap": false,
+  "lib": [
+   "   "
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 1,
+ "target": 1,
+ "noImplicitAny": false,
+ "sourceMap": false,
+ "lib": [],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:8:4 - error TS6046: Argument for '--lib' option must be: 'es5', 'es6', 'es2015', 'es7', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'es2023', 'esnext', 'dom', 'dom.iterable', 'webworker', 'webworker.importscripts', 'webworker.iterable', 'scripthost', 'es2015.core', 'es2015.collection', 'es2015.generator', 'es2015.iterable', 'es2015.promise', 'es2015.proxy', 'es2015.reflect', 'es2015.symbol', 'es2015.symbol.wellknown', 'es2016.array.include', 'es2017.object', 'es2017.sharedmemory', 'es2017.string', 'es2017.intl', 'es2017.typedarrays', 'es2018.asyncgenerator', 'es2018.asynciterable', 'es2018.intl', 'es2018.promise', 'es2018.regexp', 'es2019.array', 'es2019.object', 'es2019.string', 'es2019.symbol', 'es2019.intl', 'es2020.bigint', 'es2020.date', 'es2020.promise', 'es2020.sharedmemory', 'es2020.string', 'es2020.symbol.wellknown', 'es2020.intl', 'es2020.number', 'es2021.promise', 'es2021.string', 'es2021.weakref', 'es2021.intl', 'es2022.array', 'es2022.error', 'es2022.intl', 'es2022.object', 'es2022.sharedmemory', 'es2022.string', 'es2022.regexp', 'es2023.array', 'esnext.array', 'esnext.symbol', 'esnext.asynciterable', 'esnext.intl', 'esnext.bigint', 'esnext.string', 'esnext.promise', 'esnext.weakref', 'decorators', 'decorators.legacy'.
+
+8    "   "
+     ~~~~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with json api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with json api.js
new file mode 100644
index 00000000000..082ae9d08bd
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with json api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": [
+   "   "
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [
+  "   "
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with jsonSourceFile api.js
new file mode 100644
index 00000000000..082ae9d08bd
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert trailing-whitespace string option of moduleSuffixes to compiler-options with jsonSourceFile api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "compilerOptions": {
+  "moduleSuffixes": [
+   "   "
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "moduleSuffixes": [
+  "   "
+ ],
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert tsconfig options when there are multiple invalid strings with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert tsconfig options when there are multiple invalid strings with jsonSourceFile api.js
new file mode 100644
index 00000000000..d2a216a02e2
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Convert tsconfig options when there are multiple invalid strings with jsonSourceFile api.js	
@@ -0,0 +1,114 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+  "compilerOptions": {
+    "target": "<%- options.useTsWithBabel ? 'esnext' : 'es5' %>",
+    "module": "esnext",
+    <%_ if (options.classComponent) { _%>
+    "experimentalDecorators": true,
+    <%_ } _%>
+    "sourceMap": true,
+    "types": [
+      "webpack-env"<% if (hasMocha || hasJest) { %>,<% } %>
+      <%_ if (hasMocha) { _%>
+      "mocha",
+      "chai"
+      <%_ } else if (hasJest) { _%>
+      "jest"
+      <%_ } _%>
+    ]
+  }
+}
+
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 99,
+ "experimentalDecorators": true,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:1:1 - error TS5092: The root value of a 'tsconfig.json' file must be an object.
+
+  1 {
+    ~
+  2   "compilerOptions": {
+    ~~~~~~~~~~~~~~~~~~~~~~
+... 
+ 18   }
+    ~~~
+ 19 }
+    ~
+tsconfig.json:3:15 - error TS6046: Argument for '--target' option must be: 'es3', 'es5', 'es6', 'es2015', 'es2016', 'es2017', 'es2018', 'es2019', 'es2020', 'es2021', 'es2022', 'esnext'.
+
+3     "target": "<%- options.useTsWithBabel ? 'esnext' : 'es5' %>",
+                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+tsconfig.json:5:7 - error TS1136: Property assignment expected.
+
+5     <%_ if (options.classComponent) { _%>
+        ~
+tsconfig.json:5:9 - error TS1136: Property assignment expected.
+
+5     <%_ if (options.classComponent) { _%>
+          ~~
+tsconfig.json:5:20 - error TS1327: String literal with double quotes expected.
+
+5     <%_ if (options.classComponent) { _%>
+                     
+tsconfig.json:5:20 - error TS1328: Property value can only be string literal, numeric literal, 'true', 'false', 'null', object literal or array literal.
+
+5     <%_ if (options.classComponent) { _%>
+                     ~~~~~~~~~~~~~~~
+tsconfig.json:5:39 - error TS1136: Property assignment expected.
+
+5     <%_ if (options.classComponent) { _%>
+                                        ~
+tsconfig.json:7:7 - error TS1136: Property assignment expected.
+
+7     <%_ } _%>
+        ~
+tsconfig.json:7:11 - error TS1136: Property assignment expected.
+
+7     <%_ } _%>
+            ~
+tsconfig.json:10:7 - error TS1328: Property value can only be string literal, numeric literal, 'true', 'false', 'null', object literal or array literal.
+
+10       "webpack-env"<% if (hasMocha || hasJest) { %>,<% } %>
+         ~~~~~~~~~~~~~~~
+tsconfig.json:10:23 - error TS1136: Property assignment expected.
+
+10       "webpack-env"<% if (hasMocha || hasJest) { %>,<% } %>
+                         ~~
+tsconfig.json:11:9 - error TS1136: Property assignment expected.
+
+11       <%_ if (hasMocha) { _%>
+           ~
+tsconfig.json:11:11 - error TS1136: Property assignment expected.
+
+11       <%_ if (hasMocha) { _%>
+             ~~
+tsconfig.json:14:13 - error TS1327: String literal with double quotes expected.
+
+14       <%_ } else if (hasJest) { _%>
+               ~~~~
+tsconfig.json:14:17 - error TS1328: Property value can only be string literal, numeric literal, 'true', 'false', 'null', object literal or array literal.
+
+14       <%_ } else if (hasJest) { _%>
+                   
+tsconfig.json:14:18 - error TS1136: Property assignment expected.
+
+14       <%_ } else if (hasJest) { _%>
+                    ~~
+tsconfig.json:16:13 - error TS1136: Property assignment expected.
+
+16       <%_ } _%>
+               ~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/Don't crash when root expression is not object at all with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Don't crash when root expression is not object at all with jsonSourceFile api.js
new file mode 100644
index 00000000000..8ee271bbee8
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/Don't crash when root expression is not object at all with jsonSourceFile api.js	
@@ -0,0 +1,22 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+42
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:1:1 - error TS5092: The root value of a 'tsconfig.json' file must be an object.
+
+1 42
+  ~~
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/does not raise an error if you've set a compiler flag in the root when you have included 'compilerOptions' with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/does not raise an error if you've set a compiler flag in the root when you have included 'compilerOptions' with jsonSourceFile api.js
new file mode 100644
index 00000000000..269283eb9d5
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/does not raise an error if you've set a compiler flag in the root when you have included 'compilerOptions' with jsonSourceFile api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+            "target": "esnext",
+            "compilerOptions": {
+                "module": "esnext"
+            }
+        }
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "module": 99,
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertCompilerOptionsFromJson/raises an error if you've set a compiler flag in the root without including compilerOptions with jsonSourceFile api.js b/tests/baselines/reference/config/convertCompilerOptionsFromJson/raises an error if you've set a compiler flag in the root without including compilerOptions with jsonSourceFile api.js
new file mode 100644
index 00000000000..64ecb5e2fc6
--- /dev/null
+++ b/tests/baselines/reference/config/convertCompilerOptionsFromJson/raises an error if you've set a compiler flag in the root without including compilerOptions with jsonSourceFile api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+            "module": "esnext",
+        }
+
+
+configFileName:: tsconfig.json
+CompilerOptions::
+{
+ "configFilePath": "tsconfig.json"
+}
+Errors::
+tsconfig.json:2:13 - error TS6258: 'module' should be set inside the 'compilerOptions' object of the config json file
+
+2             "module": "esnext",
+              ~~~~~~~~
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..95ff0f2309a
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with json api.js	
@@ -0,0 +1,38 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": true,
+  "include": [
+   "0.d.ts",
+   "1.d.ts"
+  ],
+  "exclude": [
+   "0.js",
+   "1.js"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [
+  "0.d.ts",
+  "1.d.ts"
+ ],
+ "exclude": [
+  "0.js",
+  "1.js"
+ ]
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..95ff0f2309a
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert correctly format tsconfig.json to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,38 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": true,
+  "include": [
+   "0.d.ts",
+   "1.d.ts"
+  ],
+  "exclude": [
+   "0.js",
+   "1.js"
+  ]
+ }
+}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [
+  "0.d.ts",
+  "1.d.ts"
+ ],
+ "exclude": [
+  "0.js",
+  "1.js"
+ ]
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..868fb7743dd
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with json api.js	
@@ -0,0 +1,20 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..868fb7743dd
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default jsconfig.json to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,20 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..4b98a66335b
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with json api.js	
@@ -0,0 +1,20 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..4b98a66335b
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert default tsconfig.json to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,20 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..f93cdebf07d
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with json api.js	
@@ -0,0 +1,25 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "typeAcquisition": {
+  "enableAutoDiscovy": true
+ }
+}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [],
+ "exclude": []
+}
+Errors::
+error TS17010: Unknown type acquisition option 'enableAutoDiscovy'.
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..fdb27fee0f5
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format jsconfig.json to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,28 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "typeAcquisition": {
+  "enableAutoDiscovy": true
+ }
+}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [],
+ "exclude": []
+}
+Errors::
+jsconfig.json:3:3 - error TS17010: Unknown type acquisition option 'enableAutoDiscovy'.
+
+3   "enableAutoDiscovy": true
+    ~~~~~~~~~~~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..ec3afbb22ba
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with json api.js	
@@ -0,0 +1,25 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "typeAcquisition": {
+  "enableAutoDiscovy": true
+ }
+}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [],
+ "exclude": []
+}
+Errors::
+error TS17010: Unknown type acquisition option 'enableAutoDiscovy'.
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..b2e3f9703ca
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert incorrect format tsconfig.json to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,28 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "typeAcquisition": {
+  "enableAutoDiscovy": true
+ }
+}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [],
+ "exclude": []
+}
+Errors::
+tsconfig.json:3:3 - error TS17010: Unknown type acquisition option 'enableAutoDiscovy'.
+
+3   "enableAutoDiscovy": true
+    ~~~~~~~~~~~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..654798085f9
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with json api.js	
@@ -0,0 +1,34 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": false,
+  "include": [
+   "0.d.ts"
+  ],
+  "exclude": [
+   "0.js"
+  ]
+ }
+}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [
+  "0.d.ts"
+ ],
+ "exclude": [
+  "0.js"
+ ]
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..654798085f9
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,34 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": false,
+  "include": [
+   "0.d.ts"
+  ],
+  "exclude": [
+   "0.js"
+  ]
+ }
+}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [
+  "0.d.ts"
+ ],
+ "exclude": [
+  "0.js"
+ ]
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..c5b848a23b5
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with json api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": false
+ }
+}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..c5b848a23b5
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert jsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/jsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": false
+ }
+}
+
+
+configFileName:: jsconfig.json
+TypeAcquisition::
+{
+ "enable": false,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with json api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with json api.js
new file mode 100644
index 00000000000..e9cfcace7b5
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with json api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": true
+ }
+}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js
new file mode 100644
index 00000000000..e9cfcace7b5
--- /dev/null
+++ b/tests/baselines/reference/config/convertTypeAcquisitionFromJson/Convert tsconfig.json with only enable property to typeAcquisition  with jsonSourceFile api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/b.js]
+
+
+//// [/apath/tsconfig.json]
+{
+ "typeAcquisition": {
+  "enable": true
+ }
+}
+
+
+configFileName:: tsconfig.json
+TypeAcquisition::
+{
+ "enable": true,
+ "include": [],
+ "exclude": []
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with json api.js b/tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with json api.js
new file mode 100644
index 00000000000..3998377aab0
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with json api.js	
@@ -0,0 +1,109 @@
+config:
+{
+ "include": [
+  "z"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z/a.ts",
+  "c:/dev/z/aba.ts",
+  "c:/dev/z/abz.ts",
+  "c:/dev/z/b.ts",
+  "c:/dev/z/bba.ts",
+  "c:/dev/z/bbz.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "z"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/z": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with jsonSourceFile api.js
new file mode 100644
index 00000000000..57ebdd5c647
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/Expands z to z/starstart/star with jsonSourceFile api.js	
@@ -0,0 +1,108 @@
+config:
+{
+ "include": [
+  "z"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z/a.ts",
+  "c:/dev/z/aba.ts",
+  "c:/dev/z/abz.ts",
+  "c:/dev/z/b.ts",
+  "c:/dev/z/bba.ts",
+  "c:/dev/z/bbz.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "z"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/z": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/always include literal files with json api.js b/tests/baselines/reference/config/matchFiles/always include literal files with json api.js
new file mode 100644
index 00000000000..a80b94f9b68
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/always include literal files with json api.js	
@@ -0,0 +1,116 @@
+config:
+{
+ "files": [
+  "a.ts"
+ ],
+ "include": [
+  "*/z.ts"
+ ],
+ "exclude": [
+  "**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "a.ts"
+  ],
+  "include": [
+   "*/z.ts"
+  ],
+  "exclude": [
+   "**/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/always include literal files with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/always include literal files with jsonSourceFile api.js
new file mode 100644
index 00000000000..1c730b32eb5
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/always include literal files with jsonSourceFile api.js	
@@ -0,0 +1,115 @@
+config:
+{
+ "files": [
+  "a.ts"
+ ],
+ "include": [
+  "*/z.ts"
+ ],
+ "exclude": [
+  "**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "a.ts"
+  ],
+  "include": [
+   "*/z.ts"
+  ],
+  "exclude": [
+   "**/a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and empty exclude with json api.js b/tests/baselines/reference/config/matchFiles/and empty exclude with json api.js
new file mode 100644
index 00000000000..1bee3c7ab69
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and empty exclude with json api.js	
@@ -0,0 +1,62 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": []
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": [],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and empty exclude with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/and empty exclude with jsonSourceFile api.js
new file mode 100644
index 00000000000..d4ece58b81d
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and empty exclude with jsonSourceFile api.js	
@@ -0,0 +1,61 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": []
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": []
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and exclusions with json api.js b/tests/baselines/reference/config/matchFiles/and exclusions with json api.js
new file mode 100644
index 00000000000..b32af48d227
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and exclusions with json api.js	
@@ -0,0 +1,66 @@
+config:
+{
+ "include": [
+  "**/?.ts"
+ ],
+ "exclude": [
+  "a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/b.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/?.ts"
+  ],
+  "exclude": [
+   "a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and exclusions with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/and exclusions with jsonSourceFile api.js
new file mode 100644
index 00000000000..2365e1a7903
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and exclusions with jsonSourceFile api.js	
@@ -0,0 +1,65 @@
+config:
+{
+ "include": [
+  "**/?.ts"
+ ],
+ "exclude": [
+  "a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/b.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/?.ts"
+  ],
+  "exclude": [
+   "a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and explicit recursive include with json api.js b/tests/baselines/reference/config/matchFiles/and explicit recursive include with json api.js
new file mode 100644
index 00000000000..1821e59ed23
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and explicit recursive include with json api.js	
@@ -0,0 +1,63 @@
+config:
+{
+ "include": [
+  "**/a.ts",
+  "**/node_modules/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/node_modules/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts",
+   "**/node_modules/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and explicit recursive include with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/and explicit recursive include with jsonSourceFile api.js
new file mode 100644
index 00000000000..3f47bed36a9
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and explicit recursive include with jsonSourceFile api.js	
@@ -0,0 +1,62 @@
+config:
+{
+ "include": [
+  "**/a.ts",
+  "**/node_modules/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/node_modules/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts",
+   "**/node_modules/a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and explicit wildcard include with json api.js b/tests/baselines/reference/config/matchFiles/and explicit wildcard include with json api.js
new file mode 100644
index 00000000000..83bee1dabe6
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and explicit wildcard include with json api.js	
@@ -0,0 +1,62 @@
+config:
+{
+ "include": [
+  "*/a.ts",
+  "node_modules/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts",
+  "c:/dev/node_modules/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*/a.ts",
+   "node_modules/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and explicit wildcard include with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/and explicit wildcard include with jsonSourceFile api.js
new file mode 100644
index 00000000000..421e96679c6
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and explicit wildcard include with jsonSourceFile api.js	
@@ -0,0 +1,61 @@
+config:
+{
+ "include": [
+  "*/a.ts",
+  "node_modules/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts",
+  "c:/dev/node_modules/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*/a.ts",
+   "node_modules/a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and no exclusions with json api.js b/tests/baselines/reference/config/matchFiles/and no exclusions with json api.js
new file mode 100644
index 00000000000..d731b74f840
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and no exclusions with json api.js	
@@ -0,0 +1,60 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and no exclusions with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/and no exclusions with jsonSourceFile api.js
new file mode 100644
index 00000000000..a5462b86bb3
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and no exclusions with jsonSourceFile api.js	
@@ -0,0 +1,59 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and wildcard include with json api.js b/tests/baselines/reference/config/matchFiles/and wildcard include with json api.js
new file mode 100644
index 00000000000..fe0804dc6a4
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and wildcard include with json api.js	
@@ -0,0 +1,59 @@
+config:
+{
+ "include": [
+  "*/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/and wildcard include with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/and wildcard include with jsonSourceFile api.js
new file mode 100644
index 00000000000..7e28ff89961
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/and wildcard include with jsonSourceFile api.js	
@@ -0,0 +1,58 @@
+config:
+{
+ "include": [
+  "*/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*/a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/are not removed due to excludes with json api.js b/tests/baselines/reference/config/matchFiles/are not removed due to excludes with json api.js
new file mode 100644
index 00000000000..2b5129a8a20
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/are not removed due to excludes with json api.js	
@@ -0,0 +1,111 @@
+config:
+{
+ "files": [
+  "a.ts",
+  "b.ts"
+ ],
+ "exclude": [
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "a.ts",
+   "b.ts"
+  ],
+  "exclude": [
+   "b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/are not removed due to excludes with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/are not removed due to excludes with jsonSourceFile api.js
new file mode 100644
index 00000000000..db253ef243a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/are not removed due to excludes with jsonSourceFile api.js	
@@ -0,0 +1,110 @@
+config:
+{
+ "files": [
+  "a.ts",
+  "b.ts"
+ ],
+ "exclude": [
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "a.ts",
+   "b.ts"
+  ],
+  "exclude": [
+   "b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/can exclude dirs whose pattern starts with starstar with json api.js b/tests/baselines/reference/config/matchFiles/can exclude dirs whose pattern starts with starstar with json api.js
new file mode 100644
index 00000000000..98c1a4543d9
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can exclude dirs whose pattern starts with starstar with json api.js	
@@ -0,0 +1,97 @@
+config:
+{
+ "exclude": [
+  "**/x"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "exclude": [
+   "**/x"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '["**/x"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/can exclude dirs whose pattern starts with starstar with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/can exclude dirs whose pattern starts with starstar with jsonSourceFile api.js
new file mode 100644
index 00000000000..c0cc715e610
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can exclude dirs whose pattern starts with starstar with jsonSourceFile api.js	
@@ -0,0 +1,96 @@
+config:
+{
+ "exclude": [
+  "**/x"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "exclude": [
+   "**/x"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '["**/x"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/can include dirs whose pattern starts with starstart with json api.js b/tests/baselines/reference/config/matchFiles/can include dirs whose pattern starts with starstart with json api.js
new file mode 100644
index 00000000000..c0baf78d540
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can include dirs whose pattern starts with starstart with json api.js	
@@ -0,0 +1,99 @@
+config:
+{
+ "include": [
+  "**/x",
+  "**/a/**/b"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/x",
+   "**/a/**/b"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/x","**/a/**/b"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/can include dirs whose pattern starts with starstart with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/can include dirs whose pattern starts with starstart with jsonSourceFile api.js
new file mode 100644
index 00000000000..16e9270262f
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can include dirs whose pattern starts with starstart with jsonSourceFile api.js	
@@ -0,0 +1,98 @@
+config:
+{
+ "include": [
+  "**/x",
+  "**/a/**/b"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/x",
+   "**/a/**/b"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/x","**/a/**/b"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case insensitive with json api.js b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case insensitive with json api.js
new file mode 100644
index 00000000000..7d4e7367994
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case insensitive with json api.js	
@@ -0,0 +1,39 @@
+config:
+{}
+Fs::
+//// [c:/dev/xylophone.ts]
+
+
+//// [c:/dev/Yosemite.ts]
+
+
+//// [c:/dev/zebra.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/Yosemite.ts",
+  "c:/dev/xylophone.ts",
+  "c:/dev/zebra.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case insensitive with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case insensitive with jsonSourceFile api.js
new file mode 100644
index 00000000000..287a1a916dd
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case insensitive with jsonSourceFile api.js	
@@ -0,0 +1,37 @@
+config:
+{}
+Fs::
+//// [c:/dev/xylophone.ts]
+
+
+//// [c:/dev/Yosemite.ts]
+
+
+//// [c:/dev/zebra.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/Yosemite.ts",
+  "c:/dev/xylophone.ts",
+  "c:/dev/zebra.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {},
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case sensitive with json api.js b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case sensitive with json api.js
new file mode 100644
index 00000000000..dcdf5cebde4
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case sensitive with json api.js	
@@ -0,0 +1,36 @@
+config:
+{}
+Fs::
+//// [/dev/Yosemite.ts]
+
+
+//// [/dev/xylophone.ts]
+
+
+//// [/dev/zebra.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case sensitive with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case sensitive with jsonSourceFile api.js
new file mode 100644
index 00000000000..dc0755bf6f3
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/can include files in the same order on multiple platforms case sensitive with jsonSourceFile api.js	
@@ -0,0 +1,34 @@
+config:
+{}
+Fs::
+//// [/dev/Yosemite.ts]
+
+
+//// [/dev/xylophone.ts]
+
+
+//// [/dev/zebra.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {},
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/case sensitive with json api.js b/tests/baselines/reference/config/matchFiles/case sensitive with json api.js
new file mode 100644
index 00000000000..eacd16926c4
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/case sensitive with json api.js	
@@ -0,0 +1,97 @@
+config:
+{
+ "include": [
+  "**/A.ts"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/A.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/A.ts"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/case sensitive with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/case sensitive with jsonSourceFile api.js
new file mode 100644
index 00000000000..8354874b166
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/case sensitive with jsonSourceFile api.js	
@@ -0,0 +1,96 @@
+config:
+{
+ "include": [
+  "**/A.ts"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/A.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/A.ts"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude .js files when allowJs=false with json api.js b/tests/baselines/reference/config/matchFiles/exclude .js files when allowJs=false with json api.js
new file mode 100644
index 00000000000..8abd00d303d
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude .js files when allowJs=false with json api.js	
@@ -0,0 +1,110 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": false
+ },
+ "include": [
+  "js/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": false
+  },
+  "include": [
+   "js/*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["js/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude .js files when allowJs=false with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/exclude .js files when allowJs=false with jsonSourceFile api.js
new file mode 100644
index 00000000000..8abe45c57bd
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude .js files when allowJs=false with jsonSourceFile api.js	
@@ -0,0 +1,109 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": false
+ },
+ "include": [
+  "js/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": false
+  },
+  "include": [
+   "js/*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["js/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude .min.js files using wildcards with json api.js b/tests/baselines/reference/config/matchFiles/exclude .min.js files using wildcards with json api.js
new file mode 100644
index 00000000000..f2515327be3
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude .min.js files using wildcards with json api.js	
@@ -0,0 +1,117 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ },
+ "include": [
+  "js/*.min.js"
+ ],
+ "exclude": [
+  "js/a*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/js/d.min.js"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  },
+  "include": [
+   "js/*.min.js"
+  ],
+  "exclude": [
+   "js/a*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude .min.js files using wildcards with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/exclude .min.js files using wildcards with jsonSourceFile api.js
new file mode 100644
index 00000000000..f4f481ce27a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude .min.js files using wildcards with jsonSourceFile api.js	
@@ -0,0 +1,116 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ },
+ "include": [
+  "js/*.min.js"
+ ],
+ "exclude": [
+  "js/a*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/js/d.min.js"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  },
+  "include": [
+   "js/*.min.js"
+  ],
+  "exclude": [
+   "js/a*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude files with .. in their name with json api.js b/tests/baselines/reference/config/matchFiles/exclude files with .. in their name with json api.js
new file mode 100644
index 00000000000..2b8d54e5382
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude files with .. in their name with json api.js	
@@ -0,0 +1,110 @@
+config:
+{
+ "include": [
+  "c:/ext/**/*"
+ ],
+ "exclude": [
+  "c:/ext/b/a..b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/ext/ext.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "c:/ext/**/*"
+  ],
+  "exclude": [
+   "c:/ext/b/a..b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/ext": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude files with .. in their name with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/exclude files with .. in their name with jsonSourceFile api.js
new file mode 100644
index 00000000000..3c749ba5aef
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude files with .. in their name with jsonSourceFile api.js	
@@ -0,0 +1,109 @@
+config:
+{
+ "include": [
+  "c:/ext/**/*"
+ ],
+ "exclude": [
+  "c:/ext/b/a..b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/ext/ext.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "c:/ext/**/*"
+  ],
+  "exclude": [
+   "c:/ext/b/a..b.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/ext": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude folders with json api.js b/tests/baselines/reference/config/matchFiles/exclude folders with json api.js
new file mode 100644
index 00000000000..bfbc9b3dc00
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude folders with json api.js	
@@ -0,0 +1,114 @@
+config:
+{
+ "include": [
+  "**/*"
+ ],
+ "exclude": [
+  "z",
+  "x"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/*"
+  ],
+  "exclude": [
+   "z",
+   "x"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude folders with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/exclude folders with jsonSourceFile api.js
new file mode 100644
index 00000000000..2345662ea47
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude folders with jsonSourceFile api.js	
@@ -0,0 +1,113 @@
+config:
+{
+ "include": [
+  "**/*"
+ ],
+ "exclude": [
+  "z",
+  "x"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/*"
+  ],
+  "exclude": [
+   "z",
+   "x"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude paths outside of the project using relative paths with json api.js b/tests/baselines/reference/config/matchFiles/exclude paths outside of the project using relative paths with json api.js
new file mode 100644
index 00000000000..373996f1495
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude paths outside of the project using relative paths with json api.js	
@@ -0,0 +1,107 @@
+config:
+{
+ "include": [
+  "c:/**/*"
+ ],
+ "exclude": [
+  "../**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "c:/**/*"
+  ],
+  "exclude": [
+   "../**"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["c:/**/*"]' and 'exclude' paths were '["../**"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/exclude paths outside of the project using relative paths with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/exclude paths outside of the project using relative paths with jsonSourceFile api.js
new file mode 100644
index 00000000000..aacae1a8299
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/exclude paths outside of the project using relative paths with jsonSourceFile api.js	
@@ -0,0 +1,106 @@
+config:
+{
+ "include": [
+  "c:/**/*"
+ ],
+ "exclude": [
+  "../**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "c:/**/*"
+  ],
+  "exclude": [
+   "../**"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["c:/**/*"]' and 'exclude' paths were '["../**"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes after a subdirectory with json api.js b/tests/baselines/reference/config/matchFiles/in excludes after a subdirectory with json api.js
new file mode 100644
index 00000000000..3792b9bc78c
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes after a subdirectory with json api.js	
@@ -0,0 +1,114 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": [
+  "**/y/.."
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": [
+   "**/y/.."
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/y/..'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes after a subdirectory with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in excludes after a subdirectory with jsonSourceFile api.js
new file mode 100644
index 00000000000..5af1e5230aa
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes after a subdirectory with jsonSourceFile api.js	
@@ -0,0 +1,116 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": [
+  "**/y/.."
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": [
+   "**/y/.."
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+tsconfig.json:6:3 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/y/..'.
+
+6   "**/y/.."
+    ~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes immediately after with json api.js b/tests/baselines/reference/config/matchFiles/in excludes immediately after with json api.js
new file mode 100644
index 00000000000..eb4c641aef2
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes immediately after with json api.js	
@@ -0,0 +1,114 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": [
+  "**/.."
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": [
+   "**/.."
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/..'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes immediately after with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in excludes immediately after with jsonSourceFile api.js
new file mode 100644
index 00000000000..d0e3d6356e4
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes immediately after with jsonSourceFile api.js	
@@ -0,0 +1,116 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": [
+  "**/.."
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": [
+   "**/.."
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+tsconfig.json:6:3 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/..'.
+
+6   "**/.."
+    ~~~~~~~
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes with json api.js b/tests/baselines/reference/config/matchFiles/in excludes with json api.js
new file mode 100644
index 00000000000..fdea974132a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes with json api.js	
@@ -0,0 +1,111 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": [
+  "**/x/**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": [
+   "**/x/**"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in excludes with jsonSourceFile api.js
new file mode 100644
index 00000000000..2c35e4f366b
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes with jsonSourceFile api.js	
@@ -0,0 +1,110 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ],
+ "exclude": [
+  "**/x/**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "exclude": [
+   "**/x/**"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes with trailing recursive directory with json api.js b/tests/baselines/reference/config/matchFiles/in excludes with trailing recursive directory with json api.js
new file mode 100644
index 00000000000..989b631a68f
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes with trailing recursive directory with json api.js	
@@ -0,0 +1,107 @@
+config:
+{
+ "include": [
+  "**/*"
+ ],
+ "exclude": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/*"
+  ],
+  "exclude": [
+   "**"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '["**"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in excludes with trailing recursive directory with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in excludes with trailing recursive directory with jsonSourceFile api.js
new file mode 100644
index 00000000000..06b77203f52
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in excludes with trailing recursive directory with jsonSourceFile api.js	
@@ -0,0 +1,106 @@
+config:
+{
+ "include": [
+  "**/*"
+ ],
+ "exclude": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/*"
+  ],
+  "exclude": [
+   "**"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '["**"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes after a subdirectory with json api.js b/tests/baselines/reference/config/matchFiles/in includes after a subdirectory with json api.js
new file mode 100644
index 00000000000..85c93a0b484
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes after a subdirectory with json api.js	
@@ -0,0 +1,102 @@
+config:
+{
+ "include": [
+  "**/y/../*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/y/../*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/y/../*'.
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/y/../*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes after a subdirectory with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in includes after a subdirectory with jsonSourceFile api.js
new file mode 100644
index 00000000000..b6cd1c33ddc
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes after a subdirectory with jsonSourceFile api.js	
@@ -0,0 +1,104 @@
+config:
+{
+ "include": [
+  "**/y/../*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/y/../*"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+tsconfig.json:3:3 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/y/../*'.
+
+3   "**/y/../*"
+    ~~~~~~~~~~~
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/y/../*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes immediately after with json api.js b/tests/baselines/reference/config/matchFiles/in includes immediately after with json api.js
new file mode 100644
index 00000000000..ae93f65c99c
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes immediately after with json api.js	
@@ -0,0 +1,102 @@
+config:
+{
+ "include": [
+  "**/../*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/../*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/../*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes immediately after with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in includes immediately after with jsonSourceFile api.js
new file mode 100644
index 00000000000..c073e84ce2d
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes immediately after with jsonSourceFile api.js	
@@ -0,0 +1,104 @@
+config:
+{
+ "include": [
+  "**/../*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/../*"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+tsconfig.json:3:3 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+
+3   "**/../*"
+    ~~~~~~~~~
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/../*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes with multiple recursive directory patterns with json api.js b/tests/baselines/reference/config/matchFiles/in includes with multiple recursive directory patterns with json api.js
new file mode 100644
index 00000000000..cf4673cab1b
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes with multiple recursive directory patterns with json api.js	
@@ -0,0 +1,108 @@
+config:
+{
+ "include": [
+  "**/x/**/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts",
+  "c:/dev/x/aa.ts",
+  "c:/dev/x/b.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/x/y/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/x/**/*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes with multiple recursive directory patterns with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in includes with multiple recursive directory patterns with jsonSourceFile api.js
new file mode 100644
index 00000000000..0ee0690bf7e
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes with multiple recursive directory patterns with jsonSourceFile api.js	
@@ -0,0 +1,107 @@
+config:
+{
+ "include": [
+  "**/x/**/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts",
+  "c:/dev/x/aa.ts",
+  "c:/dev/x/b.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/x/y/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/x/**/*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes with trailing recursive directory with json api.js b/tests/baselines/reference/config/matchFiles/in includes with trailing recursive directory with json api.js
new file mode 100644
index 00000000000..2df0a02448b
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes with trailing recursive directory with json api.js	
@@ -0,0 +1,102 @@
+config:
+{
+ "include": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS5010: File specification cannot end in a recursive directory wildcard ('**'): '**'.
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/in includes with trailing recursive directory with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/in includes with trailing recursive directory with jsonSourceFile api.js
new file mode 100644
index 00000000000..59e50c45b49
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/in includes with trailing recursive directory with jsonSourceFile api.js	
@@ -0,0 +1,104 @@
+config:
+{
+ "include": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+tsconfig.json:3:3 - error TS5010: File specification cannot end in a recursive directory wildcard ('**'): '**'.
+
+3   "**"
+    ~~~~
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/include .js files when allowJs=true with json api.js b/tests/baselines/reference/config/matchFiles/include .js files when allowJs=true with json api.js
new file mode 100644
index 00000000000..e659849dc28
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include .js files when allowJs=true with json api.js	
@@ -0,0 +1,112 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ },
+ "include": [
+  "js/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/js/a.js",
+  "c:/dev/js/b.js"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  },
+  "include": [
+   "js/*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include .js files when allowJs=true with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/include .js files when allowJs=true with jsonSourceFile api.js
new file mode 100644
index 00000000000..c64b0de13e8
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include .js files when allowJs=true with jsonSourceFile api.js	
@@ -0,0 +1,111 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ },
+ "include": [
+  "js/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/js/a.js",
+  "c:/dev/js/b.js"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  },
+  "include": [
+   "js/*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include explicitly listed .min.js files when allowJs=true with json api.js b/tests/baselines/reference/config/matchFiles/include explicitly listed .min.js files when allowJs=true with json api.js
new file mode 100644
index 00000000000..245e50e95e7
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include explicitly listed .min.js files when allowJs=true with json api.js	
@@ -0,0 +1,112 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ },
+ "include": [
+  "js/*.min.js"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/js/ab.min.js",
+  "c:/dev/js/d.min.js"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  },
+  "include": [
+   "js/*.min.js"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include explicitly listed .min.js files when allowJs=true with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/include explicitly listed .min.js files when allowJs=true with jsonSourceFile api.js
new file mode 100644
index 00000000000..988d5a28c32
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include explicitly listed .min.js files when allowJs=true with jsonSourceFile api.js	
@@ -0,0 +1,111 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ },
+ "include": [
+  "js/*.min.js"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/js/ab.min.js",
+  "c:/dev/js/d.min.js"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  },
+  "include": [
+   "js/*.min.js"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/js": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include files with .. in their name with json api.js b/tests/baselines/reference/config/matchFiles/include files with .. in their name with json api.js
new file mode 100644
index 00000000000..f1131049a06
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include files with .. in their name with json api.js	
@@ -0,0 +1,108 @@
+config:
+{
+ "include": [
+  "c:/ext/b/a..b.ts"
+ ],
+ "exclude": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/ext/b/a..b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "c:/ext/b/a..b.ts"
+  ],
+  "exclude": [
+   "**"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include files with .. in their name with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/include files with .. in their name with jsonSourceFile api.js
new file mode 100644
index 00000000000..6230b48f3ed
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include files with .. in their name with jsonSourceFile api.js	
@@ -0,0 +1,107 @@
+config:
+{
+ "include": [
+  "c:/ext/b/a..b.ts"
+ ],
+ "exclude": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/ext/b/a..b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "c:/ext/b/a..b.ts"
+  ],
+  "exclude": [
+   "**"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include paths outside of the project using relative paths with json api.js b/tests/baselines/reference/config/matchFiles/include paths outside of the project using relative paths with json api.js
new file mode 100644
index 00000000000..0cff994f910
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include paths outside of the project using relative paths with json api.js	
@@ -0,0 +1,112 @@
+config:
+{
+ "include": [
+  "*",
+  "../ext/*"
+ ],
+ "exclude": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/ext/ext.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*",
+   "../ext/*"
+  ],
+  "exclude": [
+   "**"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/ext": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include paths outside of the project using relative paths with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/include paths outside of the project using relative paths with jsonSourceFile api.js
new file mode 100644
index 00000000000..35e261c5b2e
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include paths outside of the project using relative paths with jsonSourceFile api.js	
@@ -0,0 +1,111 @@
+config:
+{
+ "include": [
+  "*",
+  "../ext/*"
+ ],
+ "exclude": [
+  "**"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/ext/ext.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*",
+   "../ext/*"
+  ],
+  "exclude": [
+   "**"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/ext": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include paths outside of the project with json api.js b/tests/baselines/reference/config/matchFiles/include paths outside of the project with json api.js
new file mode 100644
index 00000000000..168a943a715
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include paths outside of the project with json api.js	
@@ -0,0 +1,110 @@
+config:
+{
+ "include": [
+  "*",
+  "c:/ext/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts",
+  "c:/ext/ext.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*",
+   "c:/ext/*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.None",
+  "c:/ext": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/include paths outside of the project with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/include paths outside of the project with jsonSourceFile api.js
new file mode 100644
index 00000000000..9b5fc7cb68a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/include paths outside of the project with jsonSourceFile api.js	
@@ -0,0 +1,109 @@
+config:
+{
+ "include": [
+  "*",
+  "c:/ext/*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts",
+  "c:/ext/ext.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*",
+   "c:/ext/*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.None",
+  "c:/ext": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/is sorted in include order, then in alphabetical order with json api.js b/tests/baselines/reference/config/matchFiles/is sorted in include order, then in alphabetical order with json api.js
new file mode 100644
index 00000000000..754659c9633
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/is sorted in include order, then in alphabetical order with json api.js	
@@ -0,0 +1,115 @@
+config:
+{
+ "include": [
+  "z/*.ts",
+  "x/*.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z/a.ts",
+  "c:/dev/z/aba.ts",
+  "c:/dev/z/abz.ts",
+  "c:/dev/z/b.ts",
+  "c:/dev/z/bba.ts",
+  "c:/dev/z/bbz.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/aa.ts",
+  "c:/dev/x/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "z/*.ts",
+   "x/*.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/z": "WatchDirectoryFlags.None",
+  "c:/dev/x": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/is sorted in include order, then in alphabetical order with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/is sorted in include order, then in alphabetical order with jsonSourceFile api.js
new file mode 100644
index 00000000000..4961455ad98
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/is sorted in include order, then in alphabetical order with jsonSourceFile api.js	
@@ -0,0 +1,114 @@
+config:
+{
+ "include": [
+  "z/*.ts",
+  "x/*.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z/a.ts",
+  "c:/dev/z/aba.ts",
+  "c:/dev/z/abz.ts",
+  "c:/dev/z/b.ts",
+  "c:/dev/z/bba.ts",
+  "c:/dev/z/bbz.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/aa.ts",
+  "c:/dev/x/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "z/*.ts",
+   "x/*.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/z": "WatchDirectoryFlags.None",
+  "c:/dev/x": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/missing files are still present with json api.js b/tests/baselines/reference/config/matchFiles/missing files are still present with json api.js
new file mode 100644
index 00000000000..0e856bcc8dd
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/missing files are still present with json api.js	
@@ -0,0 +1,105 @@
+config:
+{
+ "files": [
+  "z.ts",
+  "x.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z.ts",
+  "c:/dev/x.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "z.ts",
+   "x.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/missing files are still present with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/missing files are still present with jsonSourceFile api.js
new file mode 100644
index 00000000000..0a8f3b90d49
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/missing files are still present with jsonSourceFile api.js	
@@ -0,0 +1,104 @@
+config:
+{
+ "files": [
+  "z.ts",
+  "x.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z.ts",
+  "c:/dev/x.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "z.ts",
+   "x.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/question matches only a single character with json api.js b/tests/baselines/reference/config/matchFiles/question matches only a single character with json api.js
new file mode 100644
index 00000000000..ad593920384
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/question matches only a single character with json api.js	
@@ -0,0 +1,105 @@
+config:
+{
+ "include": [
+  "x/?.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts",
+  "c:/dev/x/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/?.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/question matches only a single character with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/question matches only a single character with jsonSourceFile api.js
new file mode 100644
index 00000000000..19959f4698a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/question matches only a single character with jsonSourceFile api.js	
@@ -0,0 +1,104 @@
+config:
+{
+ "include": [
+  "x/?.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/a.ts",
+  "c:/dev/x/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/?.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/same named declarations are excluded with json api.js b/tests/baselines/reference/config/matchFiles/same named declarations are excluded with json api.js
new file mode 100644
index 00000000000..91fcf3fc668
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/same named declarations are excluded with json api.js	
@@ -0,0 +1,106 @@
+config:
+{
+ "include": [
+  "*.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/same named declarations are excluded with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/same named declarations are excluded with jsonSourceFile api.js
new file mode 100644
index 00000000000..d0a89f98e44
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/same named declarations are excluded with jsonSourceFile api.js	
@@ -0,0 +1,105 @@
+config:
+{
+ "include": [
+  "*.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/star matches only ts files with json api.js b/tests/baselines/reference/config/matchFiles/star matches only ts files with json api.js
new file mode 100644
index 00000000000..45e0d5ba496
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/star matches only ts files with json api.js	
@@ -0,0 +1,106 @@
+config:
+{
+ "include": [
+  "*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/star matches only ts files with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/star matches only ts files with jsonSourceFile api.js
new file mode 100644
index 00000000000..ce3a1bd8a0f
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/star matches only ts files with jsonSourceFile api.js	
@@ -0,0 +1,105 @@
+config:
+{
+ "include": [
+  "*"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/c.d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.None"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/that are not explicitly included with json api.js b/tests/baselines/reference/config/matchFiles/that are not explicitly included with json api.js
new file mode 100644
index 00000000000..c3f5e3710bd
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/that are not explicitly included with json api.js	
@@ -0,0 +1,63 @@
+config:
+{
+ "include": [
+  "x/**/*",
+  "w/*/*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/d.ts",
+  "c:/dev/x/y/d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/**/*",
+   "w/*/*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.Recursive",
+  "c:/dev/w": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/that are not explicitly included with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/that are not explicitly included with jsonSourceFile api.js
new file mode 100644
index 00000000000..0f817bc7e45
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/that are not explicitly included with jsonSourceFile api.js	
@@ -0,0 +1,62 @@
+config:
+{
+ "include": [
+  "x/**/*",
+  "w/*/*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/d.ts",
+  "c:/dev/x/y/d.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/**/*",
+   "w/*/*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.Recursive",
+  "c:/dev/w": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/when recursive symlinked directories are present with json api.js b/tests/baselines/reference/config/matchFiles/when recursive symlinked directories are present with json api.js
new file mode 100644
index 00000000000..20c49780894
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/when recursive symlinked directories are present with json api.js	
@@ -0,0 +1,34 @@
+config:
+{}
+Fs::
+//// [c:/dev/a/b/c/grandparent] symlink(c:/dev/a)
+//// [c:/dev/a/b/parent] symlink(c:/dev/a)
+//// [c:/dev/a/self] symlink(c:/dev/A)
+//// [c:/dev/index.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/index.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/when recursive symlinked directories are present with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/when recursive symlinked directories are present with jsonSourceFile api.js
new file mode 100644
index 00000000000..f8fea8e6e3e
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/when recursive symlinked directories are present with jsonSourceFile api.js	
@@ -0,0 +1,32 @@
+config:
+{}
+Fs::
+//// [c:/dev/a/b/c/grandparent] symlink(c:/dev/a)
+//// [c:/dev/a/b/parent] symlink(c:/dev/a)
+//// [c:/dev/a/self] symlink(c:/dev/A)
+//// [c:/dev/index.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/index.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {},
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with case sensitive exclude with json api.js b/tests/baselines/reference/config/matchFiles/with case sensitive exclude with json api.js
new file mode 100644
index 00000000000..893aa2d70bb
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with case sensitive exclude with json api.js	
@@ -0,0 +1,101 @@
+config:
+{
+ "include": [
+  "B.ts"
+ ],
+ "exclude": [
+  "**/b.ts"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "B.ts"
+  ],
+  "exclude": [
+   "**/b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["B.ts"]' and 'exclude' paths were '["**/b.ts"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with case sensitive exclude with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with case sensitive exclude with jsonSourceFile api.js
new file mode 100644
index 00000000000..e7b11727e4a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with case sensitive exclude with jsonSourceFile api.js	
@@ -0,0 +1,100 @@
+config:
+{
+ "include": [
+  "B.ts"
+ ],
+ "exclude": [
+  "**/b.ts"
+ ]
+}
+Fs::
+//// [/dev/A.ts]
+
+
+//// [/dev/B.ts]
+
+
+//// [/dev/a.d.ts]
+
+
+//// [/dev/a.js]
+
+
+//// [/dev/a.ts]
+
+
+//// [/dev/b.js]
+
+
+//// [/dev/b.ts]
+
+
+//// [/dev/c.d.ts]
+
+
+//// [/dev/js/a.js]
+
+
+//// [/dev/js/b.js]
+
+
+//// [/dev/q/a/c/b/d.ts]
+
+
+//// [/dev/x/a.ts]
+
+
+//// [/dev/x/b.ts]
+
+
+//// [/dev/x/y/a.ts]
+
+
+//// [/dev/x/y/b.ts]
+
+
+//// [/dev/z/a.ts]
+
+
+//// [/dev/z/aba.ts]
+
+
+//// [/dev/z/abz.ts]
+
+
+//// [/dev/z/b.ts]
+
+
+//// [/dev/z/bba.ts]
+
+
+//// [/dev/z/bbz.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "B.ts"
+  ],
+  "exclude": [
+   "**/b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["B.ts"]' and 'exclude' paths were '["**/b.ts"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with common package folders and empty exclude with json api.js b/tests/baselines/reference/config/matchFiles/with common package folders and empty exclude with json api.js
new file mode 100644
index 00000000000..2f4f9bda3d3
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with common package folders and empty exclude with json api.js	
@@ -0,0 +1,69 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "node_modules/a.ts",
+  "bower_components/a.ts",
+  "jspm_packages/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/node_modules/a.ts",
+  "c:/dev/bower_components/a.ts",
+  "c:/dev/jspm_packages/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "node_modules/a.ts",
+   "bower_components/a.ts",
+   "jspm_packages/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with common package folders and empty exclude with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with common package folders and empty exclude with jsonSourceFile api.js
new file mode 100644
index 00000000000..544280641d1
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with common package folders and empty exclude with jsonSourceFile api.js	
@@ -0,0 +1,68 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "node_modules/a.ts",
+  "bower_components/a.ts",
+  "jspm_packages/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/node_modules/a.ts",
+  "c:/dev/bower_components/a.ts",
+  "c:/dev/jspm_packages/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "node_modules/a.ts",
+   "bower_components/a.ts",
+   "jspm_packages/a.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with common package folders and exclusions with json api.js b/tests/baselines/reference/config/matchFiles/with common package folders and exclusions with json api.js
new file mode 100644
index 00000000000..be9925b06f4
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with common package folders and exclusions with json api.js	
@@ -0,0 +1,75 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "node_modules/a.ts",
+  "bower_components/a.ts",
+  "jspm_packages/a.ts"
+ ],
+ "exclude": [
+  "a.ts",
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/node_modules/a.ts",
+  "c:/dev/bower_components/a.ts",
+  "c:/dev/jspm_packages/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "node_modules/a.ts",
+   "bower_components/a.ts",
+   "jspm_packages/a.ts"
+  ],
+  "exclude": [
+   "a.ts",
+   "b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with common package folders and exclusions with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with common package folders and exclusions with jsonSourceFile api.js
new file mode 100644
index 00000000000..b01acd4b9f9
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with common package folders and exclusions with jsonSourceFile api.js	
@@ -0,0 +1,74 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "node_modules/a.ts",
+  "bower_components/a.ts",
+  "jspm_packages/a.ts"
+ ],
+ "exclude": [
+  "a.ts",
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/node_modules/a.ts",
+  "c:/dev/bower_components/a.ts",
+  "c:/dev/jspm_packages/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "node_modules/a.ts",
+   "bower_components/a.ts",
+   "jspm_packages/a.ts"
+  ],
+  "exclude": [
+   "a.ts",
+   "b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with common package folders and no exclusions with json api.js b/tests/baselines/reference/config/matchFiles/with common package folders and no exclusions with json api.js
new file mode 100644
index 00000000000..2f4f9bda3d3
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with common package folders and no exclusions with json api.js	
@@ -0,0 +1,69 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "node_modules/a.ts",
+  "bower_components/a.ts",
+  "jspm_packages/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/node_modules/a.ts",
+  "c:/dev/bower_components/a.ts",
+  "c:/dev/jspm_packages/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "node_modules/a.ts",
+   "bower_components/a.ts",
+   "jspm_packages/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with common package folders and no exclusions with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with common package folders and no exclusions with jsonSourceFile api.js
new file mode 100644
index 00000000000..544280641d1
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with common package folders and no exclusions with jsonSourceFile api.js	
@@ -0,0 +1,68 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "node_modules/a.ts",
+  "bower_components/a.ts",
+  "jspm_packages/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/node_modules/a.ts",
+  "c:/dev/bower_components/a.ts",
+  "c:/dev/jspm_packages/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "node_modules/a.ts",
+   "bower_components/a.ts",
+   "jspm_packages/a.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with defaults with json api.js b/tests/baselines/reference/config/matchFiles/with defaults with json api.js
new file mode 100644
index 00000000000..a91a4e7b5a2
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with defaults with json api.js	
@@ -0,0 +1,54 @@
+config:
+{}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with defaults with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with defaults with jsonSourceFile api.js
new file mode 100644
index 00000000000..f4101c99717
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with defaults with jsonSourceFile api.js	
@@ -0,0 +1,52 @@
+config:
+{}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/bower_components/a.ts]
+
+
+//// [c:/dev/jspm_packages/a.ts]
+
+
+//// [c:/dev/node_modules/a.ts]
+
+
+//// [c:/dev/x/a.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts",
+  "c:/dev/x/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {},
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=false with json api.js b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=false with json api.js
new file mode 100644
index 00000000000..ff009e69f0c
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=false with json api.js	
@@ -0,0 +1,71 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": false
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": false
+  },
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=false with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=false with jsonSourceFile api.js
new file mode 100644
index 00000000000..9ffe7842131
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=false with jsonSourceFile api.js	
@@ -0,0 +1,70 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": false
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": false
+  }
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=true with json api.js b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=true with json api.js
new file mode 100644
index 00000000000..fbcef69799d
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=true with json api.js	
@@ -0,0 +1,73 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx",
+  "c:/dev/d.js",
+  "c:/dev/e.jsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  },
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=true with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=true with jsonSourceFile api.js
new file mode 100644
index 00000000000..fab75bbcc11
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=none, allowJs=true with jsonSourceFile api.js	
@@ -0,0 +1,72 @@
+config:
+{
+ "compilerOptions": {
+  "allowJs": true
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx",
+  "c:/dev/d.js",
+  "c:/dev/e.jsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "allowJs": true
+  }
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=false with json api.js b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=false with json api.js
new file mode 100644
index 00000000000..d9ec43f454a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=false with json api.js	
@@ -0,0 +1,74 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "preserve",
+  "allowJs": false
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 1,
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "preserve",
+   "allowJs": false
+  },
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=false with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=false with jsonSourceFile api.js
new file mode 100644
index 00000000000..a5d7cb2bd44
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=false with jsonSourceFile api.js	
@@ -0,0 +1,73 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "preserve",
+  "allowJs": false
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 1,
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "preserve",
+   "allowJs": false
+  }
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=true with json api.js b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=true with json api.js
new file mode 100644
index 00000000000..99c17534127
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=true with json api.js	
@@ -0,0 +1,76 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "preserve",
+  "allowJs": true
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 1,
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx",
+  "c:/dev/d.js",
+  "c:/dev/e.jsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "preserve",
+   "allowJs": true
+  },
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=true with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=true with jsonSourceFile api.js
new file mode 100644
index 00000000000..ecd1e44fde1
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=preserve, allowJs=true with jsonSourceFile api.js	
@@ -0,0 +1,75 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "preserve",
+  "allowJs": true
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 1,
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx",
+  "c:/dev/d.js",
+  "c:/dev/e.jsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "preserve",
+   "allowJs": true
+  }
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=false with json api.js b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=false with json api.js
new file mode 100644
index 00000000000..e74950607a6
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=false with json api.js	
@@ -0,0 +1,74 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "react-native",
+  "allowJs": false
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 3,
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "react-native",
+   "allowJs": false
+  },
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=false with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=false with jsonSourceFile api.js
new file mode 100644
index 00000000000..8148573f9ef
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=false with jsonSourceFile api.js	
@@ -0,0 +1,73 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "react-native",
+  "allowJs": false
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 3,
+  "allowJs": false,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "react-native",
+   "allowJs": false
+  }
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=true with json api.js b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=true with json api.js
new file mode 100644
index 00000000000..46acb795c50
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=true with json api.js	
@@ -0,0 +1,76 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "react-native",
+  "allowJs": true
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 3,
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx",
+  "c:/dev/d.js",
+  "c:/dev/e.jsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "react-native",
+   "allowJs": true
+  },
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=true with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=true with jsonSourceFile api.js
new file mode 100644
index 00000000000..c53d583a5e7
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with jsx=react-native, allowJs=true with jsonSourceFile api.js	
@@ -0,0 +1,75 @@
+config:
+{
+ "compilerOptions": {
+  "jsx": "react-native",
+  "allowJs": true
+ }
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.d.ts]
+
+
+//// [c:/dev/b.jsx]
+
+
+//// [c:/dev/b.tsx]
+
+
+//// [c:/dev/c.js]
+
+
+//// [c:/dev/c.tsx]
+
+
+//// [c:/dev/d.js]
+
+
+//// [c:/dev/e.jsx]
+
+
+//// [c:/dev/f.other]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "jsx": 3,
+  "allowJs": true,
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.tsx",
+  "c:/dev/c.tsx",
+  "c:/dev/d.js",
+  "c:/dev/e.jsx"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "compilerOptions": {
+   "jsx": "react-native",
+   "allowJs": true
+  }
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with literal excludes with json api.js b/tests/baselines/reference/config/matchFiles/with literal excludes with json api.js
new file mode 100644
index 00000000000..5440c5aa65c
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with literal excludes with json api.js	
@@ -0,0 +1,110 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts"
+ ],
+ "exclude": [
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts"
+  ],
+  "exclude": [
+   "b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with literal excludes with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with literal excludes with jsonSourceFile api.js
new file mode 100644
index 00000000000..5c8401da57e
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with literal excludes with jsonSourceFile api.js	
@@ -0,0 +1,109 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts"
+ ],
+ "exclude": [
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts"
+  ],
+  "exclude": [
+   "b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with missing files are excluded with literal include list with json api.js b/tests/baselines/reference/config/matchFiles/with missing files are excluded with literal include list with json api.js
new file mode 100644
index 00000000000..b067af459a6
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with missing files are excluded with literal include list with json api.js	
@@ -0,0 +1,103 @@
+config:
+{
+ "include": [
+  "z.ts",
+  "x.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "z.ts",
+   "x.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["z.ts","x.ts"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with missing files are excluded with literal include list with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with missing files are excluded with literal include list with jsonSourceFile api.js
new file mode 100644
index 00000000000..f534765db3f
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with missing files are excluded with literal include list with jsonSourceFile api.js	
@@ -0,0 +1,102 @@
+config:
+{
+ "include": [
+  "z.ts",
+  "x.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "z.ts",
+   "x.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["z.ts","x.ts"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with missing files are excluded with wildcard include list with json api.js b/tests/baselines/reference/config/matchFiles/with missing files are excluded with wildcard include list with json api.js
new file mode 100644
index 00000000000..bbf8b64c14f
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with missing files are excluded with wildcard include list with json api.js	
@@ -0,0 +1,103 @@
+config:
+{
+ "include": [
+  "*/z.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*/z.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["*/z.ts"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with missing files are excluded with wildcard include list with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with missing files are excluded with wildcard include list with jsonSourceFile api.js
new file mode 100644
index 00000000000..3396b3630e0
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with missing files are excluded with wildcard include list with jsonSourceFile api.js	
@@ -0,0 +1,102 @@
+config:
+{
+ "include": [
+  "*/z.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "*/z.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["*/z.ts"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with multiple recursive directories with json api.js b/tests/baselines/reference/config/matchFiles/with multiple recursive directories with json api.js
new file mode 100644
index 00000000000..7c863e1c544
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with multiple recursive directories with json api.js	
@@ -0,0 +1,111 @@
+config:
+{
+ "include": [
+  "x/y/**/a.ts",
+  "x/**/a.ts",
+  "z/**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/y/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/y/**/a.ts",
+   "x/**/a.ts",
+   "z/**/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.Recursive",
+  "c:/dev/z": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with multiple recursive directories with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with multiple recursive directories with jsonSourceFile api.js
new file mode 100644
index 00000000000..0f79bd98983
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with multiple recursive directories with jsonSourceFile api.js	
@@ -0,0 +1,110 @@
+config:
+{
+ "include": [
+  "x/y/**/a.ts",
+  "x/**/a.ts",
+  "z/**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/y/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/y/**/a.ts",
+   "x/**/a.ts",
+   "z/**/a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.Recursive",
+  "c:/dev/z": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with non .ts file extensions are excluded with json api.js b/tests/baselines/reference/config/matchFiles/with non .ts file extensions are excluded with json api.js
new file mode 100644
index 00000000000..0f84295e12d
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with non .ts file extensions are excluded with json api.js	
@@ -0,0 +1,103 @@
+config:
+{
+ "include": [
+  "a.js",
+  "b.js"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.js",
+   "b.js"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["a.js","b.js"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with non .ts file extensions are excluded with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with non .ts file extensions are excluded with jsonSourceFile api.js
new file mode 100644
index 00000000000..18c0e0efa9a
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with non .ts file extensions are excluded with jsonSourceFile api.js	
@@ -0,0 +1,102 @@
+config:
+{
+ "include": [
+  "a.js",
+  "b.js"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.js",
+   "b.js"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["a.js","b.js"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive directory with json api.js b/tests/baselines/reference/config/matchFiles/with recursive directory with json api.js
new file mode 100644
index 00000000000..db2d570e6ce
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive directory with json api.js	
@@ -0,0 +1,107 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive directory with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with recursive directory with jsonSourceFile api.js
new file mode 100644
index 00000000000..d2aedb139a5
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive directory with jsonSourceFile api.js	
@@ -0,0 +1,106 @@
+config:
+{
+ "include": [
+  "**/a.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts",
+  "c:/dev/z/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/a.ts"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive excludes with json api.js b/tests/baselines/reference/config/matchFiles/with recursive excludes with json api.js
new file mode 100644
index 00000000000..fe44fe81307
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive excludes with json api.js	
@@ -0,0 +1,120 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "x/a.ts",
+  "x/b.ts",
+  "x/y/a.ts",
+  "x/y/b.ts"
+ ],
+ "exclude": [
+  "**/b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "x/a.ts",
+   "x/b.ts",
+   "x/y/a.ts",
+   "x/y/b.ts"
+  ],
+  "exclude": [
+   "**/b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive excludes with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with recursive excludes with jsonSourceFile api.js
new file mode 100644
index 00000000000..ba00ddf5f9f
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive excludes with jsonSourceFile api.js	
@@ -0,0 +1,119 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "x/a.ts",
+  "x/b.ts",
+  "x/y/a.ts",
+  "x/y/b.ts"
+ ],
+ "exclude": [
+  "**/b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/x/a.ts",
+  "c:/dev/x/y/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "x/a.ts",
+   "x/b.ts",
+   "x/y/a.ts",
+   "x/y/b.ts"
+  ],
+  "exclude": [
+   "**/b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive wildcards that match directories with json api.js b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match directories with json api.js
new file mode 100644
index 00000000000..bc489887e96
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match directories with json api.js	
@@ -0,0 +1,62 @@
+config:
+{
+ "include": [
+  "**/.*/*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/.z/c.ts",
+  "c:/dev/g.min.js/.g/g.ts",
+  "c:/dev/w/.u/e.ts",
+  "c:/dev/x/.y/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/.*/*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive wildcards that match directories with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match directories with jsonSourceFile api.js
new file mode 100644
index 00000000000..94906639802
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match directories with jsonSourceFile api.js	
@@ -0,0 +1,61 @@
+config:
+{
+ "include": [
+  "**/.*/*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/.z/c.ts",
+  "c:/dev/g.min.js/.g/g.ts",
+  "c:/dev/w/.u/e.ts",
+  "c:/dev/x/.y/a.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/.*/*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive wildcards that match nothing with json api.js b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match nothing with json api.js
new file mode 100644
index 00000000000..a2f4a468a14
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match nothing with json api.js	
@@ -0,0 +1,63 @@
+config:
+{
+ "include": [
+  "x/**/.y/*",
+  ".z/**/.*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/.y/a.ts",
+  "c:/dev/.z/.b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/**/.y/*",
+   ".z/**/.*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.Recursive",
+  "c:/dev/.z": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with recursive wildcards that match nothing with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match nothing with jsonSourceFile api.js
new file mode 100644
index 00000000000..e30f906e18d
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with recursive wildcards that match nothing with jsonSourceFile api.js	
@@ -0,0 +1,62 @@
+config:
+{
+ "include": [
+  "x/**/.y/*",
+  ".z/**/.*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/.y/a.ts",
+  "c:/dev/.z/.b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/**/.y/*",
+   ".z/**/.*"
+  ]
+ },
+ "wildcardDirectories": {
+  "c:/dev/x": "WatchDirectoryFlags.Recursive",
+  "c:/dev/.z": "WatchDirectoryFlags.Recursive"
+ },
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with wildcard excludes that implicitly exclude dotted files with json api.js b/tests/baselines/reference/config/matchFiles/with wildcard excludes that implicitly exclude dotted files with json api.js
new file mode 100644
index 00000000000..63be05aeba9
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with wildcard excludes that implicitly exclude dotted files with json api.js	
@@ -0,0 +1,62 @@
+config:
+{
+ "include": [
+  "**/.*/*"
+ ],
+ "exclude": [
+  "**/*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/.*/*"
+  ],
+  "exclude": [
+   "**/*"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/.*/*"]' and 'exclude' paths were '["**/*"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with wildcard excludes that implicitly exclude dotted files with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with wildcard excludes that implicitly exclude dotted files with jsonSourceFile api.js
new file mode 100644
index 00000000000..226284fe14f
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with wildcard excludes that implicitly exclude dotted files with jsonSourceFile api.js	
@@ -0,0 +1,61 @@
+config:
+{
+ "include": [
+  "**/.*/*"
+ ],
+ "exclude": [
+  "**/*"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "**/.*/*"
+  ],
+  "exclude": [
+   "**/*"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+error TS18003: No inputs were found in config file 'c:/dev/tsconfig.json'. Specified 'include' paths were '["**/.*/*"]' and 'exclude' paths were '["**/*"]'.
+
diff --git a/tests/baselines/reference/config/matchFiles/with wildcard excludes with json api.js b/tests/baselines/reference/config/matchFiles/with wildcard excludes with json api.js
new file mode 100644
index 00000000000..c5711d8d642
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with wildcard excludes with json api.js	
@@ -0,0 +1,123 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "z/a.ts",
+  "z/abz.ts",
+  "z/aba.ts",
+  "x/b.ts"
+ ],
+ "exclude": [
+  "*.ts",
+  "z/??z.ts",
+  "*/b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z/a.ts",
+  "c:/dev/z/aba.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "z/a.ts",
+   "z/abz.ts",
+   "z/aba.ts",
+   "x/b.ts"
+  ],
+  "exclude": [
+   "*.ts",
+   "z/??z.ts",
+   "*/b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/with wildcard excludes with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/with wildcard excludes with jsonSourceFile api.js
new file mode 100644
index 00000000000..689aac8dba5
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/with wildcard excludes with jsonSourceFile api.js	
@@ -0,0 +1,122 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts",
+  "z/a.ts",
+  "z/abz.ts",
+  "z/aba.ts",
+  "x/b.ts"
+ ],
+ "exclude": [
+  "*.ts",
+  "z/??z.ts",
+  "*/b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/z/a.ts",
+  "c:/dev/z/aba.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts",
+   "z/a.ts",
+   "z/abz.ts",
+   "z/aba.ts",
+   "x/b.ts"
+  ],
+  "exclude": [
+   "*.ts",
+   "z/??z.ts",
+   "*/b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/without exclusions with literal file list with json api.js b/tests/baselines/reference/config/matchFiles/without exclusions with literal file list with json api.js
new file mode 100644
index 00000000000..c3e7aa29953
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/without exclusions with literal file list with json api.js	
@@ -0,0 +1,105 @@
+config:
+{
+ "files": [
+  "a.ts",
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "a.ts",
+   "b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/without exclusions with literal file list with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/without exclusions with literal file list with jsonSourceFile api.js
new file mode 100644
index 00000000000..10fe1fcd3ae
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/without exclusions with literal file list with jsonSourceFile api.js	
@@ -0,0 +1,104 @@
+config:
+{
+ "files": [
+  "a.ts",
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "files": [
+   "a.ts",
+   "b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/without exclusions with literal include list with json api.js b/tests/baselines/reference/config/matchFiles/without exclusions with literal include list with json api.js
new file mode 100644
index 00000000000..7bd60f518d5
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/without exclusions with literal include list with json api.js	
@@ -0,0 +1,105 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/without exclusions with literal include list with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/without exclusions with literal include list with jsonSourceFile api.js
new file mode 100644
index 00000000000..69c1aa6c265
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/without exclusions with literal include list with jsonSourceFile api.js	
@@ -0,0 +1,104 @@
+config:
+{
+ "include": [
+  "a.ts",
+  "b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/a.d.ts]
+
+
+//// [c:/dev/a.js]
+
+
+//// [c:/dev/a.ts]
+
+
+//// [c:/dev/b.js]
+
+
+//// [c:/dev/b.ts]
+
+
+//// [c:/dev/c.d.ts]
+
+
+//// [c:/dev/js/a.js]
+
+
+//// [c:/dev/js/ab.min.js]
+
+
+//// [c:/dev/js/b.js]
+
+
+//// [c:/dev/js/d.min.js]
+
+
+//// [c:/dev/x/a.ts]
+
+
+//// [c:/dev/x/aa.ts]
+
+
+//// [c:/dev/x/b.ts]
+
+
+//// [c:/dev/x/y/a.ts]
+
+
+//// [c:/dev/x/y/b.ts]
+
+
+//// [c:/dev/z/a.ts]
+
+
+//// [c:/dev/z/aba.ts]
+
+
+//// [c:/dev/z/abz.ts]
+
+
+//// [c:/dev/z/b.ts]
+
+
+//// [c:/dev/z/bba.ts]
+
+
+//// [c:/dev/z/bbz.ts]
+
+
+//// [c:/ext/b/a..b.ts]
+
+
+//// [c:/ext/ext.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/a.ts",
+  "c:/dev/b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "a.ts",
+   "b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/without wildcards with json api.js b/tests/baselines/reference/config/matchFiles/without wildcards with json api.js
new file mode 100644
index 00000000000..04924a1e9fa
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/without wildcards with json api.js	
@@ -0,0 +1,60 @@
+config:
+{
+ "include": [
+  "x/.y/a.ts",
+  "c:/dev/.z/.b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/.y/a.ts",
+  "c:/dev/.z/.b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/.y/a.ts",
+   "c:/dev/.z/.b.ts"
+  ],
+  "compileOnSave": false
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/matchFiles/without wildcards with jsonSourceFile api.js b/tests/baselines/reference/config/matchFiles/without wildcards with jsonSourceFile api.js
new file mode 100644
index 00000000000..5798a483fb3
--- /dev/null
+++ b/tests/baselines/reference/config/matchFiles/without wildcards with jsonSourceFile api.js	
@@ -0,0 +1,59 @@
+config:
+{
+ "include": [
+  "x/.y/a.ts",
+  "c:/dev/.z/.b.ts"
+ ]
+}
+Fs::
+//// [c:/dev/.z/.b.ts]
+
+
+//// [c:/dev/.z/c.ts]
+
+
+//// [c:/dev/g.min.js/.g/g.ts]
+
+
+//// [c:/dev/w/.u/e.ts]
+
+
+//// [c:/dev/x/.y/a.ts]
+
+
+//// [c:/dev/x/d.ts]
+
+
+//// [c:/dev/x/y/.e.ts]
+
+
+//// [c:/dev/x/y/d.ts]
+
+
+
+configFileName:: c:/dev/tsconfig.json
+Result
+{
+ "options": {
+  "configFilePath": "c:/dev/tsconfig.json"
+ },
+ "fileNames": [
+  "c:/dev/x/.y/a.ts",
+  "c:/dev/.z/.b.ts"
+ ],
+ "typeAcquisition": {
+  "enable": false,
+  "include": [],
+  "exclude": []
+ },
+ "raw": {
+  "include": [
+   "x/.y/a.ts",
+   "c:/dev/.z/.b.ts"
+  ]
+ },
+ "wildcardDirectories": {},
+ "compileOnSave": false
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/allow dotted files and folders when explicitly requested with json api.js b/tests/baselines/reference/config/tsconfigParsing/allow dotted files and folders when explicitly requested with json api.js
new file mode 100644
index 00000000000..b423b711346
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/allow dotted files and folders when explicitly requested with json api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/..c.ts]
+
+
+//// [/apath/.b.ts]
+
+
+//// [/apath/.git/a.ts]
+
+
+//// [/apath/test.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                    "files": ["/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"]
+                }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/apath/.git/a.ts,/apath/.b.ts,/apath/..c.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/allow dotted files and folders when explicitly requested with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/allow dotted files and folders when explicitly requested with jsonSourceFile api.js
new file mode 100644
index 00000000000..b423b711346
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/allow dotted files and folders when explicitly requested with jsonSourceFile api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/..c.ts]
+
+
+//// [/apath/.b.ts]
+
+
+//// [/apath/.git/a.ts]
+
+
+//// [/apath/test.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                    "files": ["/apath/.git/a.ts", "/apath/.b.ts", "/apath/..c.ts"]
+                }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/apath/.git/a.ts,/apath/.b.ts,/apath/..c.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with json api.js b/tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with json api.js
new file mode 100644
index 00000000000..9dde48a11b4
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with json api.js	
@@ -0,0 +1,8 @@
+Fs::
+//// [/foo.bar/tsconfig.json]
+{"include":["./","./**/*.json"]}
+
+
+configFileName:: /foo.bar/tsconfig.json
+Wildcards::
+/foo.bar: WatchDirectoryFlags.Recursive
diff --git a/tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with jsonSourceFile api.js
new file mode 100644
index 00000000000..9dde48a11b4
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/correctly parses wild card directories from implicit glob when two keys differ only in directory seperator with jsonSourceFile api.js	
@@ -0,0 +1,8 @@
+Fs::
+//// [/foo.bar/tsconfig.json]
+{"include":["./","./**/*.json"]}
+
+
+configFileName:: /foo.bar/tsconfig.json
+Wildcards::
+/foo.bar: WatchDirectoryFlags.Recursive
diff --git a/tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with json api.js b/tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with json api.js
new file mode 100644
index 00000000000..b294e38156d
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with json api.js	
@@ -0,0 +1,16 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "files": [],
+                "references": [{ "path": "/apath" }]
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with jsonSourceFile api.js
new file mode 100644
index 00000000000..b294e38156d
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/does not generate errors for empty files list when one or more references are provided with jsonSourceFile api.js	
@@ -0,0 +1,16 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "files": [],
+                "references": [{ "path": "/apath" }]
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with json api.js b/tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with json api.js
new file mode 100644
index 00000000000..bcb7a1296f4
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with json api.js	
@@ -0,0 +1,42 @@
+Fs::
+//// [/a.ts]
+
+
+//// [/declarations/a.d.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "declarationDir": "declarations"
+                }
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/a.ts
+Errors::
+
+
+Fs::
+//// [/a.ts]
+
+
+//// [/declarations/a.d.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "declarationDir": "declarations"
+                },
+                "exclude": [ "types" ]
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/a.ts,/declarations/a.d.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with jsonSourceFile api.js
new file mode 100644
index 00000000000..bcb7a1296f4
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/exclude declarationDir unless overridden with jsonSourceFile api.js	
@@ -0,0 +1,42 @@
+Fs::
+//// [/a.ts]
+
+
+//// [/declarations/a.d.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "declarationDir": "declarations"
+                }
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/a.ts
+Errors::
+
+
+Fs::
+//// [/a.ts]
+
+
+//// [/declarations/a.d.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "declarationDir": "declarations"
+                },
+                "exclude": [ "types" ]
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/a.ts,/declarations/a.d.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/exclude outDir unless overridden with json api.js b/tests/baselines/reference/config/tsconfigParsing/exclude outDir unless overridden with json api.js
new file mode 100644
index 00000000000..7f94ebf06e2
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/exclude outDir unless overridden with json api.js	
@@ -0,0 +1,42 @@
+Fs::
+//// [/b.ts]
+
+
+//// [/bin/a.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "outDir": "bin"
+                }
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/b.ts
+Errors::
+
+
+Fs::
+//// [/b.ts]
+
+
+//// [/bin/a.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "outDir": "bin"
+                },
+                "exclude": [ "obj" ]
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/b.ts,/bin/a.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/exclude outDir unless overridden with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/exclude outDir unless overridden with jsonSourceFile api.js
new file mode 100644
index 00000000000..7f94ebf06e2
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/exclude outDir unless overridden with jsonSourceFile api.js	
@@ -0,0 +1,42 @@
+Fs::
+//// [/b.ts]
+
+
+//// [/bin/a.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "outDir": "bin"
+                }
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/b.ts
+Errors::
+
+
+Fs::
+//// [/b.ts]
+
+
+//// [/bin/a.ts]
+
+
+//// [/tsconfig.json]
+{
+                "compilerOptions": {
+                    "outDir": "bin"
+                },
+                "exclude": [ "obj" ]
+            }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/b.ts,/bin/a.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for directory with no .ts files with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for directory with no .ts files with json api.js
new file mode 100644
index 00000000000..997bf7716e2
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for directory with no .ts files with json api.js	
@@ -0,0 +1,15 @@
+Fs::
+//// [/apath/a.js]
+
+
+//// [/apath/tsconfig.json]
+{
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for directory with no .ts files with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for directory with no .ts files with jsonSourceFile api.js
new file mode 100644
index 00000000000..997bf7716e2
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for directory with no .ts files with jsonSourceFile api.js	
@@ -0,0 +1,15 @@
+Fs::
+//// [/apath/a.js]
+
+
+//// [/apath/tsconfig.json]
+{
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty directory with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty directory with json api.js
new file mode 100644
index 00000000000..30621abe105
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty directory with json api.js	
@@ -0,0 +1,15 @@
+Fs::
+//// [/apath/tsconfig.json]
+{
+                "compilerOptions": {
+                    "allowJs": true
+                }
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty directory with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty directory with jsonSourceFile api.js
new file mode 100644
index 00000000000..30621abe105
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty directory with jsonSourceFile api.js	
@@ -0,0 +1,15 @@
+Fs::
+//// [/apath/tsconfig.json]
+{
+                "compilerOptions": {
+                    "allowJs": true
+                }
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list when no references are provided with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list when no references are provided with json api.js
new file mode 100644
index 00000000000..9f5abbd52f4
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list when no references are provided with json api.js	
@@ -0,0 +1,17 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "files": [],
+                "references": []
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18002: The 'files' list in config file '/apath/tsconfig.json' is empty.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list when no references are provided with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list when no references are provided with jsonSourceFile api.js
new file mode 100644
index 00000000000..f906df49bab
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list when no references are provided with jsonSourceFile api.js	
@@ -0,0 +1,20 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "files": [],
+                "references": []
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+/apath/tsconfig.json:2:26 - error TS18002: The 'files' list in config file '/apath/tsconfig.json' is empty.
+
+2                 "files": [],
+                           ~~
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list with json api.js
new file mode 100644
index 00000000000..ae92900487d
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list with json api.js	
@@ -0,0 +1,16 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "files": []
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18002: The 'files' list in config file '/apath/tsconfig.json' is empty.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list with jsonSourceFile api.js
new file mode 100644
index 00000000000..2381889cf47
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty files list with jsonSourceFile api.js	
@@ -0,0 +1,19 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "files": []
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+/apath/tsconfig.json:2:26 - error TS18002: The 'files' list in config file '/apath/tsconfig.json' is empty.
+
+2                 "files": []
+                           ~~
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty include with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty include with json api.js
new file mode 100644
index 00000000000..b22486c178a
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty include with json api.js	
@@ -0,0 +1,16 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "include": []
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '[]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for empty include with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty include with jsonSourceFile api.js
new file mode 100644
index 00000000000..b22486c178a
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for empty include with jsonSourceFile api.js	
@@ -0,0 +1,16 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "include": []
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '[]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for includes with outDir with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for includes with outDir with json api.js
new file mode 100644
index 00000000000..005596ba660
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for includes with outDir with json api.js	
@@ -0,0 +1,19 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "compilerOptions": {
+                    "outDir": "./"
+                },
+                "include": ["**/*"]
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '["./"]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for includes with outDir with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for includes with outDir with jsonSourceFile api.js
new file mode 100644
index 00000000000..005596ba660
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for includes with outDir with jsonSourceFile api.js	
@@ -0,0 +1,19 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                "compilerOptions": {
+                    "outDir": "./"
+                },
+                "include": ["**/*"]
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '["**/*"]' and 'exclude' paths were '["./"]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors for when invalid comment type present in tsconfig with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors for when invalid comment type present in tsconfig with jsonSourceFile api.js
new file mode 100644
index 00000000000..de2ce52a49a
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors for when invalid comment type present in tsconfig with jsonSourceFile api.js	
@@ -0,0 +1,55 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+              "compilerOptions": {
+                ## this comment does cause issues
+                "types" : [
+                ]
+              }
+            }
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+/apath/a.ts
+Errors::
+/apath/tsconfig.json:3:17 - error TS1327: String literal with double quotes expected.
+
+3                 ## this comment does cause issues
+                  ~
+/apath/tsconfig.json:3:17 - error TS5023: Unknown compiler option '#'.
+
+3                 ## this comment does cause issues
+                  ~
+/apath/tsconfig.json:3:18 - error TS1328: Property value can only be string literal, numeric literal, 'true', 'false', 'null', object literal or array literal.
+
+3                 ## this comment does cause issues
+                   ~
+/apath/tsconfig.json:3:20 - error TS1327: String literal with double quotes expected.
+
+3                 ## this comment does cause issues
+                     ~~~~
+/apath/tsconfig.json:3:20 - error TS5023: Unknown compiler option 'this'.
+
+3                 ## this comment does cause issues
+                     ~~~~
+/apath/tsconfig.json:3:25 - error TS1328: Property value can only be string literal, numeric literal, 'true', 'false', 'null', object literal or array literal.
+
+3                 ## this comment does cause issues
+                          ~~~~~~~
+/apath/tsconfig.json:3:33 - error TS1136: Property assignment expected.
+
+3                 ## this comment does cause issues
+                                  ~~~~
+/apath/tsconfig.json:3:38 - error TS1136: Property assignment expected.
+
+3                 ## this comment does cause issues
+                                       ~~~~~
+/apath/tsconfig.json:3:44 - error TS1136: Property assignment expected.
+
+3                 ## this comment does cause issues
+                                             ~~~~~~
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with json api.js
new file mode 100644
index 00000000000..9e9aa45cb02
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with json api.js	
@@ -0,0 +1,14 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{"files":[{"compilerOptions":{"experimentalDecorators":true,"allowJs":true}}]}
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS5024: Compiler option 'files' requires a value of type string.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with jsonSourceFile api.js
new file mode 100644
index 00000000000..5b0a30c38f4
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors when files is not string with jsonSourceFile api.js	
@@ -0,0 +1,17 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{"files":[{"compilerOptions":{"experimentalDecorators":true,"allowJs":true}}]}
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+/apath/tsconfig.json:1:11 - error TS5024: Compiler option 'files' requires a value of type string.
+
+1 {"files":[{"compilerOptions":{"experimentalDecorators":true,"allowJs":true}}]}
+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with json api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with json api.js
new file mode 100644
index 00000000000..b4e1615120a
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with json api.js	
@@ -0,0 +1,15 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{"include":[["./**/*.ts"]]}
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+error TS5024: Compiler option 'include' requires a value of type string.
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '[["./**/*.ts"]]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with jsonSourceFile api.js
new file mode 100644
index 00000000000..2f9c86b9a82
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/generates errors when include is not string with jsonSourceFile api.js	
@@ -0,0 +1,18 @@
+Fs::
+//// [/apath/a.ts]
+
+
+//// [/apath/tsconfig.json]
+{"include":[["./**/*.ts"]]}
+
+
+configFileName:: /apath/tsconfig.json
+FileNames::
+
+Errors::
+/apath/tsconfig.json:1:13 - error TS5024: Compiler option 'include' requires a value of type string.
+
+1 {"include":[["./**/*.ts"]]}
+              ~~~~~~~~~~~~~
+error TS18003: No inputs were found in config file '/apath/tsconfig.json'. Specified 'include' paths were '[["./**/*.ts"]]' and 'exclude' paths were '[]'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/handles escaped characters in strings correctly jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/handles escaped characters in strings correctly jsonParse.js
new file mode 100644
index 00000000000..03adeb8b825
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/handles escaped characters in strings correctly jsonParse.js	
@@ -0,0 +1,29 @@
+Input::
+{
+            "exclude": [
+                "xx\"//files"
+            ]
+        }
+Config::
+{
+ "exclude": [
+  "xx\"//files"
+ ]
+}
+Errors::
+
+
+Input::
+{
+            "exclude": [
+                "xx\\" // end of line comment
+            ]
+        }
+Config::
+{
+ "exclude": [
+  "xx\\"
+ ]
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with json api.js b/tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with json api.js
new file mode 100644
index 00000000000..8909e3dcbfe
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with json api.js	
@@ -0,0 +1,22 @@
+Fs::
+//// [/apath/..c.ts]
+
+
+//// [/apath/.b.ts]
+
+
+//// [/apath/.git/a.ts]
+
+
+//// [/apath/test.ts]
+
+
+//// [/apath/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+FileNames::
+/apath/test.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with jsonSourceFile api.js
new file mode 100644
index 00000000000..8909e3dcbfe
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/ignore dotted files and folders with jsonSourceFile api.js	
@@ -0,0 +1,22 @@
+Fs::
+//// [/apath/..c.ts]
+
+
+//// [/apath/.b.ts]
+
+
+//// [/apath/.git/a.ts]
+
+
+//// [/apath/test.ts]
+
+
+//// [/apath/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+FileNames::
+/apath/test.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with json api.js b/tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with json api.js
new file mode 100644
index 00000000000..30c9607be16
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with json api.js	
@@ -0,0 +1,25 @@
+Fs::
+//// [/bower_components/b.ts]
+
+
+//// [/d.ts]
+
+
+//// [/folder/e.ts]
+
+
+//// [/jspm_packages/c.ts]
+
+
+//// [/node_modules/a.ts]
+
+
+//// [/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+FileNames::
+/d.ts,/folder/e.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with jsonSourceFile api.js
new file mode 100644
index 00000000000..30c9607be16
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/implicitly exclude common package folders with jsonSourceFile api.js	
@@ -0,0 +1,25 @@
+Fs::
+//// [/bower_components/b.ts]
+
+
+//// [/d.ts]
+
+
+//// [/folder/e.ts]
+
+
+//// [/jspm_packages/c.ts]
+
+
+//// [/node_modules/a.ts]
+
+
+//// [/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
+FileNames::
+/d.ts,/folder/e.ts
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/keeps string content untouched jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/keeps string content untouched jsonParse.js
new file mode 100644
index 00000000000..93db9affa44
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/keeps string content untouched jsonParse.js	
@@ -0,0 +1,29 @@
+Input::
+{
+            "exclude": [
+                "xx//file.d.ts"
+            ]
+        }
+Config::
+{
+ "exclude": [
+  "xx//file.d.ts"
+ ]
+}
+Errors::
+
+
+Input::
+{
+            "exclude": [
+                "xx/*file.d.ts*/"
+            ]
+        }
+Config::
+{
+ "exclude": [
+  "xx/*file.d.ts*/"
+ ]
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/parse and re-emit tsconfig.json file with diagnostics.js b/tests/baselines/reference/config/tsconfigParsing/parse and re-emit tsconfig.json file with diagnostics.js
new file mode 100644
index 00000000000..dc6be67e56c
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/parse and re-emit tsconfig.json file with diagnostics.js	
@@ -0,0 +1,28 @@
+Initial::
+{
+                "compilerOptions": {
+                    "allowJs": true
+                    // Some comments
+                    "outDir": "bin"
+                }
+                "files": ["file1.ts"]
+            }
+Result::
+{
+ "compilerOptions": {
+  "allowJs": true,
+  "outDir": "bin"
+ },
+ "files": [
+  "file1.ts"
+ ]
+}
+Errors::
+config.json:5:21 - error TS1005: ',' expected.
+
+5                     "outDir": "bin"
+                      ~~~~~~~~
+config.json:7:17 - error TS1005: ',' expected.
+
+7                 "files": ["file1.ts"]
+                  ~~~~~~~
diff --git a/tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with json api.js b/tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with json api.js
new file mode 100644
index 00000000000..77f4867a42f
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with json api.js	
@@ -0,0 +1,8 @@
+Fs::
+//// [/foo.bar/tsconfig.json]
+{"include":["src"]}
+
+
+configFileName:: /foo.bar/tsconfig.json
+Wildcards::
+/foo.bar/src: WatchDirectoryFlags.Recursive
diff --git a/tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with jsonSourceFile api.js
new file mode 100644
index 00000000000..77f4867a42f
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/parses wildcard directories even when parent directories have dots with jsonSourceFile api.js	
@@ -0,0 +1,8 @@
+Fs::
+//// [/foo.bar/tsconfig.json]
+{"include":["src"]}
+
+
+configFileName:: /foo.bar/tsconfig.json
+Wildcards::
+/foo.bar/src: WatchDirectoryFlags.Recursive
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns config object without comments jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/returns config object without comments jsonParse.js
new file mode 100644
index 00000000000..af0aa1822f9
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns config object without comments jsonParse.js	
@@ -0,0 +1,33 @@
+Input::
+{ // Excluded files
+            "exclude": [
+                // Exclude d.ts
+                "file.d.ts"
+            ]
+        }
+Config::
+{
+ "exclude": [
+  "file.d.ts"
+ ]
+}
+Errors::
+
+
+Input::
+{
+            /* Excluded
+                    Files
+            */
+            "exclude": [
+                /* multiline comments can be in the middle of a line */"file.d.ts"
+            ]
+        }
+Config::
+{
+ "exclude": [
+  "file.d.ts"
+ ]
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns empty config for file with comments only jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/returns empty config for file with comments only jsonParse.js
new file mode 100644
index 00000000000..40357b1339b
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns empty config for file with comments only jsonParse.js	
@@ -0,0 +1,13 @@
+Input::
+// Comment
+Config::
+{}
+Errors::
+
+
+Input::
+/* Comment*/
+Config::
+{}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns empty config for file with only whitespaces jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/returns empty config for file with only whitespaces jsonParse.js
new file mode 100644
index 00000000000..4c9fe24ded5
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns empty config for file with only whitespaces jsonParse.js	
@@ -0,0 +1,13 @@
+Input::
+
+Config::
+{}
+Errors::
+
+
+Input::
+ 
+Config::
+{}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns empty config when config is empty object jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/returns empty config when config is empty object jsonParse.js
new file mode 100644
index 00000000000..7e40d9f45dc
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns empty config when config is empty object jsonParse.js	
@@ -0,0 +1,6 @@
+Input::
+{}
+Config::
+{}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with json api.js b/tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with json api.js
new file mode 100644
index 00000000000..eb0f0e1d547
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with json api.js	
@@ -0,0 +1,24 @@
+Fs::
+//// [/apath/foge.ts]
+
+
+//// [/apath/test.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                    "compilerOptions": {
+                        "lib": ["es5"]
+                    },
+                    "excludes": [
+                        "foge.ts"
+                    ]
+                }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/apath/foge.ts,/apath/test.ts
+Errors::
+error TS6114: Unknown option 'excludes'. Did you mean 'exclude'?
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with jsonSourceFile api.js
new file mode 100644
index 00000000000..7e0de849d67
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns error when tsconfig have excludes with jsonSourceFile api.js	
@@ -0,0 +1,27 @@
+Fs::
+//// [/apath/foge.ts]
+
+
+//// [/apath/test.ts]
+
+
+//// [/apath/tsconfig.json]
+{
+                    "compilerOptions": {
+                        "lib": ["es5"]
+                    },
+                    "excludes": [
+                        "foge.ts"
+                    ]
+                }
+
+
+configFileName:: tsconfig.json
+FileNames::
+/apath/foge.ts,/apath/test.ts
+Errors::
+tsconfig.json:5:21 - error TS6114: Unknown option 'excludes'. Did you mean 'exclude'?
+
+5                     "excludes": [
+                      ~~~~~~~~~~
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns object when users correctly specify library jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/returns object when users correctly specify library jsonParse.js
new file mode 100644
index 00000000000..da573d50493
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns object when users correctly specify library jsonParse.js	
@@ -0,0 +1,34 @@
+Input::
+{
+            "compilerOptions": {
+                "lib": ["es5"]
+            }
+        }
+Config::
+{
+ "compilerOptions": {
+  "lib": [
+   "es5"
+  ]
+ }
+}
+Errors::
+
+
+Input::
+{
+            "compilerOptions": {
+                "lib": ["es5", "es6"]
+            }
+        }
+Config::
+{
+ "compilerOptions": {
+  "lib": [
+   "es5",
+   "es6"
+  ]
+ }
+}
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsing/returns object with error when json is invalid jsonParse.js b/tests/baselines/reference/config/tsconfigParsing/returns object with error when json is invalid jsonParse.js
new file mode 100644
index 00000000000..8e8b752c475
--- /dev/null
+++ b/tests/baselines/reference/config/tsconfigParsing/returns object with error when json is invalid jsonParse.js	
@@ -0,0 +1,10 @@
+Input::
+invalid
+Config::
+{}
+Errors::
+apath/tsconfig.json:1:1 - error TS1005: '{' expected.
+
+1 invalid
+  ~~~~~~~
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with json api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with json api.js
index cc94977b4a1..10368b04e7c 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with json api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with json api.js	
@@ -1,109 +1,173 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "watchFile": "UseFsEvents"
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "watchDirectory": "UseFsEvents"
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchDirectory": 0
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "fallbackPolling": "DynamicPriority"
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "fallbackPolling": 2
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "synchronousWatchDirectory": true
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "synchronousWatchDirectory": true
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeDirectories": [
    "**/temp"
   ]
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeDirectories": [
   "/**/temp"
  ]
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeFiles": [
    "**/temp/*.ts"
   ]
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeFiles": [
   "/**/temp/*.ts"
  ]
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeDirectories": [
    "**/../*"
   ]
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeDirectories": []
 }
-Result: Errors::
-error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+Errors::
+error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeFiles": [
    "**/../*"
   ]
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeFiles": []
 }
-Result: Errors::
-error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+Errors::
+error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with jsonSourceFile api.js
index c335b45b794..7748786348f 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with jsonSourceFile api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/different options with jsonSourceFile api.js	
@@ -1,107 +1,179 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "watchFile": "UseFsEvents"
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "watchDirectory": "UseFsEvents"
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchDirectory": 0
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "fallbackPolling": "DynamicPriority"
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "fallbackPolling": 2
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "synchronousWatchDirectory": true
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "synchronousWatchDirectory": true
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeDirectories": [
    "**/temp"
   ]
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeDirectories": [
   "/**/temp"
  ]
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeFiles": [
    "**/temp/*.ts"
   ]
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeFiles": [
   "/**/temp/*.ts"
  ]
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeDirectories": [
    "**/../*"
   ]
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeDirectories": []
 }
-Result: Errors::
-tsconfig.json:1:40 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+Errors::
+tsconfig.json:4:4 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+
+4    "**/../*"
+     ~~~~~~~~~
 
-1 {"watchOptions":{"excludeDirectories":["**/../*"]}}
-                                         ~~~~~~~~~
 
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "excludeFiles": [
    "**/../*"
   ]
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "excludeFiles": []
 }
-Result: Errors::
-tsconfig.json:1:34 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+Errors::
+tsconfig.json:4:4 - error TS5065: File specification cannot contain a parent directory ('..') that appears after a recursive directory wildcard ('**'): '**/../*'.
+
+4    "**/../*"
+     ~~~~~~~~~
 
-1 {"watchOptions":{"excludeFiles":["**/../*"]}}
-                                   ~~~~~~~~~
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with json api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with json api.js
index 2087b9e744a..f74ac086ed4 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with json api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with json api.js	
@@ -1,7 +1,15 @@
-Input:: {
- "watchOptions": {},
- "compileOnSave": false
-}
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
+ "watchOptions": {}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with jsonSourceFile api.js
index a25c30df65e..f74ac086ed4 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with jsonSourceFile api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/empty watchOptions specified option with jsonSourceFile api.js	
@@ -1,6 +1,15 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {}
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with json api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with json api.js
index b37ccbed5fd..9bca31fc72a 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with json api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with json api.js	
@@ -1,6 +1,13 @@
-Input:: {
- "compileOnSave": false
-}
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with jsonSourceFile api.js
index 4c0e952e8ea..9bca31fc72a 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with jsonSourceFile api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/no watchOptions specified option with jsonSourceFile api.js	
@@ -1,4 +1,13 @@
-Input:: {}
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with json api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with json api.js
index 8d535837e9f..ecbeed86993 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with json api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with json api.js	
@@ -1,18 +1,33 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "watchFile": "UseFsEvents"
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4
 }
-Result: Errors::
+Errors::
 
-Input:: {
- "compileOnSave": false
-}
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with jsonSourceFile api.js
index 3cef381ecb2..ecbeed86993 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with jsonSourceFile api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/watch options extending passed in watch options with jsonSourceFile api.js	
@@ -1,15 +1,33 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{
  "watchOptions": {
   "watchFile": "UseFsEvents"
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4
 }
-Result: Errors::
+Errors::
 
-Input:: {}
+
+Fs::
+//// [/a.ts]
+
+
+//// [/tsconfig.json]
+{}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with json api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with json api.js
index 919753d60db..92ed497816a 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with json api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with json api.js	
@@ -1,24 +1,46 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{"watchOptions":{"watchFile":"UseFsEventsOnParentDirectory","watchDirectory":"FixedPollingInterval"}}
+
+//// [/tsconfig.json]
+{
  "extends": "./base.json",
  "watchOptions": {
   "watchFile": "UseFsEvents"
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4,
  "watchDirectory": 1
 }
-Result: Errors::
+Errors::
 
-Input:: {
- "extends": "./base.json",
- "compileOnSave": false
-}
+
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{"watchOptions":{"watchFile":"UseFsEventsOnParentDirectory","watchDirectory":"FixedPollingInterval"}}
+
+//// [/tsconfig.json]
+{
+ "extends": "./base.json"
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 5,
  "watchDirectory": 1
 }
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with jsonSourceFile api.js
index 9e02dd51739..92ed497816a 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with jsonSourceFile api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file with watchOptions with jsonSourceFile api.js	
@@ -1,22 +1,46 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{"watchOptions":{"watchFile":"UseFsEventsOnParentDirectory","watchDirectory":"FixedPollingInterval"}}
+
+//// [/tsconfig.json]
+{
  "extends": "./base.json",
  "watchOptions": {
   "watchFile": "UseFsEvents"
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4,
  "watchDirectory": 1
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{"watchOptions":{"watchFile":"UseFsEventsOnParentDirectory","watchDirectory":"FixedPollingInterval"}}
+
+//// [/tsconfig.json]
+{
  "extends": "./base.json"
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 5,
  "watchDirectory": 1
 }
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with json api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with json api.js
index 24140819764..e08330e344f 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with json api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with json api.js	
@@ -1,20 +1,42 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{}
+
+//// [/tsconfig.json]
+{
  "extends": "./base.json",
  "watchOptions": {
   "watchFile": "UseFsEvents"
- },
- "compileOnSave": false
-}
+ }
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4
 }
-Result: Errors::
+Errors::
 
-Input:: {
- "extends": "./base.json",
- "compileOnSave": false
-}
+
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{}
+
+//// [/tsconfig.json]
+{
+ "extends": "./base.json"
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with jsonSourceFile api.js b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with jsonSourceFile api.js
index 476bc99e4d8..e08330e344f 100644
--- a/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with jsonSourceFile api.js	
+++ b/tests/baselines/reference/config/tsconfigParsingWatchOptions/when extending config file without watchOptions with jsonSourceFile api.js	
@@ -1,18 +1,42 @@
-Input:: {
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{}
+
+//// [/tsconfig.json]
+{
  "extends": "./base.json",
  "watchOptions": {
   "watchFile": "UseFsEvents"
  }
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 {
  "watchFile": 4
 }
-Result: Errors::
+Errors::
 
-Input:: {
+
+Fs::
+//// [/a.ts]
+
+
+//// [/base.json]
+{}
+
+//// [/tsconfig.json]
+{
  "extends": "./base.json"
-}
+}
+
+
+configFileName:: tsconfig.json
 Result: WatchOptions::
 
-Result: Errors::
+Errors::
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js b/tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js
new file mode 100644
index 00000000000..78de2be6d29
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js
@@ -0,0 +1,111 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+export { };
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/secondary/b.ts]
+import * as mod_0 from "../primary/a"
+
+//// [/secondary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../primary"
+  }
+ ]
+}
+
+
+
+Output::
+/lib/tsc --p /primary/tsconfig.json
+exitCode:: ExitStatus.Success
+
+
+//// [/primary/bin/a.d.ts]
+export {};
+
+
+//// [/primary/bin/a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/primary/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../a.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../a.ts": {
+        "original": {
+          "version": "-3531955686-export { };",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-3531955686-export { };",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "semanticDiagnosticsPerFile": [
+      "../../lib/lib.d.ts",
+      "../a.ts"
+    ],
+    "latestChangedDtsFile": "./a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 820
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/does-not-error-when-the-referenced-project-doesnt-have-composite-if-its-a-container-project.js b/tests/baselines/reference/tsc/projectReferencesConfig/does-not-error-when-the-referenced-project-doesnt-have-composite-if-its-a-container-project.js
new file mode 100644
index 00000000000..563543266e9
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/does-not-error-when-the-referenced-project-doesnt-have-composite-if-its-a-container-project.js
@@ -0,0 +1,72 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+export { };
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": false,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/reference/b.ts]
+import * as mod_0 from "../primary/a"
+
+//// [/reference/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../primary"
+  }
+ ],
+ "files": []
+}
+
+
+
+Output::
+/lib/tsc --p /reference/tsconfig.json
+exitCode:: ExitStatus.Success
+
+
+//// [/reference/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":[],"fileInfos":[],"root":[],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[]},"version":"FakeTSVersion"}
+
+//// [/reference/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [],
+    "fileInfos": {},
+    "root": [],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {}
+  },
+  "version": "FakeTSVersion",
+  "size": 165
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js b/tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js
new file mode 100644
index 00000000000..dac29432d5d
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js
@@ -0,0 +1,97 @@
+Input::
+//// [/alpha/src/a.ts]
+export const m: number = 3;
+
+//// [/alpha/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+
+
+Output::
+/lib/tsc --p /alpha/tsconfig.json
+exitCode:: ExitStatus.Success
+
+
+//// [/alpha/bin/src/a.d.ts]
+export declare const m: number;
+
+
+//// [/alpha/bin/src/a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.m = void 0;
+exports.m = 3;
+
+
+//// [/alpha/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12181672471-export const m: number = 3;","signature":"-6260611917-export declare const m: number;\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./src/a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/alpha/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../src/a.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../src/a.ts": {
+        "original": {
+          "version": "-12181672471-export const m: number = 3;",
+          "signature": "-6260611917-export declare const m: number;\n"
+        },
+        "version": "-12181672471-export const m: number = 3;",
+        "signature": "-6260611917-export declare const m: number;\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../src/a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "semanticDiagnosticsPerFile": [
+      "../src/a.ts",
+      "../../lib/lib.d.ts"
+    ],
+    "latestChangedDtsFile": "./src/a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 866
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js
new file mode 100644
index 00000000000..32027721c8c
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js
@@ -0,0 +1,139 @@
+Input::
+//// [/alpha/src/a.ts]
+import * as b from '../../beta/b'
+
+//// [/alpha/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/beta/b.ts]
+export { }
+
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+
+
+Output::
+/lib/tsc --p /alpha/tsconfig.json
+alpha/src/a.ts:1:20 - error TS6059: File '/beta/b.ts' is not under 'rootDir' '/alpha'. 'rootDir' is expected to contain all source files.
+
+1 import * as b from '../../beta/b'
+                     ~~~~~~~~~~~~~~
+
+alpha/src/a.ts:1:20 - error TS6307: File '/beta/b.ts' is not listed within the file list of project '/alpha/tsconfig.json'. Projects must list all files or use an 'include' pattern.
+
+1 import * as b from '../../beta/b'
+                     ~~~~~~~~~~~~~~
+
+
+Found 2 errors in the same file, starting at: alpha/src/a.ts:1
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/alpha/bin/src/a.d.ts]
+export {};
+
+
+//// [/alpha/bin/src/a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/alpha/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../../beta/b.ts","../src/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3360792065-export { }","signature":"-3531856636-export {};\n"},{"version":"-5654511483-import * as b from '../../beta/b'","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"exportedModulesMap":[],"semanticDiagnosticsPerFile":[3,2,1],"latestChangedDtsFile":"./src/a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/alpha/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../../beta/b.ts",
+      "../src/a.ts"
+    ],
+    "fileNamesList": [
+      [
+        "../../beta/b.ts"
+      ]
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../../beta/b.ts": {
+        "original": {
+          "version": "-3360792065-export { }",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-3360792065-export { }",
+        "signature": "-3531856636-export {};\n"
+      },
+      "../src/a.ts": {
+        "original": {
+          "version": "-5654511483-import * as b from '../../beta/b'",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-5654511483-import * as b from '../../beta/b'",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        3,
+        "../src/a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {
+      "../src/a.ts": [
+        "../../beta/b.ts"
+      ]
+    },
+    "exportedModulesMap": {},
+    "semanticDiagnosticsPerFile": [
+      "../src/a.ts",
+      "../../beta/b.ts",
+      "../../lib/lib.d.ts"
+    ],
+    "latestChangedDtsFile": "./src/a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 971
+}
+
+//// [/beta/b.d.ts]
+export {};
+
+
+//// [/beta/b.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-doesnt-set-outFile.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-doesnt-set-outFile.js
new file mode 100644
index 00000000000..ab4a988b13d
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-doesnt-set-outFile.js
@@ -0,0 +1,122 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+export { };
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../someProj",
+   "prepend": true
+  }
+ ]
+}
+
+//// [/someProj/b.ts]
+const x = 100;
+
+//// [/someProj/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+
+
+Output::
+/lib/tsc --p /primary/tsconfig.json --ignoreDeprecations 5.0
+primary/tsconfig.json:7:3 - error TS6308: Cannot prepend project '/someProj' because it does not have 'outFile' set
+
+ 7   {
+     ~
+ 8    "path": "../someProj",
+   ~~~~~~~~~~~~~~~~~~~~~~~~~
+ 9    "prepend": true
+   ~~~~~~~~~~~~~~~~~~
+10   }
+   ~~~
+
+
+Found 1 error in primary/tsconfig.json:7
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/primary/bin/a.d.ts]
+export {};
+
+
+//// [/primary/bin/a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/primary/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../a.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../a.ts": {
+        "original": {
+          "version": "-3531955686-export { };",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-3531955686-export { };",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "latestChangedDtsFile": "./a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 785
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-output-doesnt-exist.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-output-doesnt-exist.js
new file mode 100644
index 00000000000..023ef4bfd92
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-prepended-project-reference-output-doesnt-exist.js
@@ -0,0 +1,139 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+const y = x;
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../someProj",
+   "prepend": true
+  }
+ ]
+}
+
+//// [/someProj/b.ts]
+const x = 100;
+
+//// [/someProj/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin",
+  "outFile": "foo.js"
+ },
+ "references": []
+}
+
+
+
+Output::
+/lib/tsc --p /primary/tsconfig.json --ignoreDeprecations 5.0
+error TS6053: File '/someProj/foo.d.ts' not found.
+  The file is in the program because:
+    Output from referenced project '/someProj/tsconfig.json' included because '--module' is specified as 'none'
+
+  primary/tsconfig.json:7:3
+     7   {
+         ~
+     8    "path": "../someProj",
+       ~~~~~~~~~~~~~~~~~~~~~~~~~
+     9    "prepend": true
+       ~~~~~~~~~~~~~~~~~~
+    10   }
+       ~~~
+    File is output from referenced project specified here.
+
+primary/tsconfig.json:7:3 - error TS6309: Output file '/someProj/foo.js' from project '/someProj' does not exist
+
+ 7   {
+     ~
+ 8    "path": "../someProj",
+   ~~~~~~~~~~~~~~~~~~~~~~~~~
+ 9    "prepend": true
+   ~~~~~~~~~~~~~~~~~~
+10   }
+   ~~~
+
+
+Found 2 errors in the same file, starting at: primary/tsconfig.json:7
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/primary/bin/a.d.ts]
+declare const y: any;
+
+
+//// [/primary/bin/a.js]
+var y = x;
+
+
+//// [/primary/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"4096062741-const y = x;","signature":"-1874842468-declare const y: any;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../a.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../a.ts": {
+        "original": {
+          "version": "4096062741-const y = x;",
+          "signature": "-1874842468-declare const y: any;\n",
+          "affectsGlobalScope": true
+        },
+        "version": "4096062741-const y = x;",
+        "signature": "-1874842468-declare const y: any;\n",
+        "affectsGlobalScope": true
+      }
+    },
+    "root": [
+      [
+        2,
+        "../a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "latestChangedDtsFile": "./a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 822
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js
new file mode 100644
index 00000000000..01ebab507ac
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js
@@ -0,0 +1,101 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+export { };
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin",
+  "declaration": false
+ },
+ "references": []
+}
+
+
+
+Output::
+/lib/tsc --p /primary/tsconfig.json
+primary/tsconfig.json:5:3 - error TS6304: Composite projects may not disable declaration emit.
+
+5   "declaration": false
+    ~~~~~~~~~~~~~
+
+
+Found 1 error in primary/tsconfig.json:5
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/primary/bin/a.d.ts]
+export {};
+
+
+//// [/primary/bin/a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/primary/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"declaration":false,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../a.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../a.ts": {
+        "original": {
+          "version": "-3531955686-export { };",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-3531955686-export { };",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "declaration": false,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "latestChangedDtsFile": "./a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 805
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js
new file mode 100644
index 00000000000..3f601b9987e
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js
@@ -0,0 +1,137 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+import * as b from './b'
+
+//// [/primary/b.ts]
+export {}
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [],
+ "files": [
+  "a.ts"
+ ]
+}
+
+
+
+Output::
+/lib/tsc --p /primary/tsconfig.json
+primary/a.ts:1:20 - error TS6307: File '/primary/b.ts' is not listed within the file list of project '/primary/tsconfig.json'. Projects must list all files or use an 'include' pattern.
+
+1 import * as b from './b'
+                     ~~~~~
+
+
+Found 1 error in primary/a.ts:1
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/primary/bin/a.d.ts]
+export {};
+
+
+//// [/primary/bin/a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/primary/bin/b.d.ts]
+export {};
+
+
+//// [/primary/bin/b.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/primary/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-2704852577-export {}","signature":"-3531856636-export {};\n"},{"version":"-4190788607-import * as b from './b'","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"exportedModulesMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../b.ts",
+      "../a.ts"
+    ],
+    "fileNamesList": [
+      [
+        "../b.ts"
+      ]
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../b.ts": {
+        "original": {
+          "version": "-2704852577-export {}",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-2704852577-export {}",
+        "signature": "-3531856636-export {};\n"
+      },
+      "../a.ts": {
+        "original": {
+          "version": "-4190788607-import * as b from './b'",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-4190788607-import * as b from './b'",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        3,
+        "../a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {
+      "../a.ts": [
+        "../b.ts"
+      ]
+    },
+    "exportedModulesMap": {},
+    "semanticDiagnosticsPerFile": [
+      "../../lib/lib.d.ts",
+      "../a.ts",
+      "../b.ts"
+    ],
+    "latestChangedDtsFile": "./a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 945
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js
new file mode 100644
index 00000000000..101c82a67c7
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js
@@ -0,0 +1,107 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+export { };
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../foo"
+  }
+ ]
+}
+
+
+
+Output::
+/lib/tsc --p /primary/tsconfig.json
+primary/tsconfig.json:7:3 - error TS6053: File '/foo' not found.
+
+7   {
+    ~
+8    "path": "../foo"
+  ~~~~~~~~~~~~~~~~~~~
+9   }
+  ~~~
+
+
+Found 1 error in primary/tsconfig.json:7
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/primary/bin/a.d.ts]
+export {};
+
+
+//// [/primary/bin/a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/primary/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+
+//// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../a.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../a.ts": {
+        "original": {
+          "version": "-3531955686-export { };",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-3531955686-export { };",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../a.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "latestChangedDtsFile": "./a.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 785
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js
new file mode 100644
index 00000000000..596e2f9278a
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js
@@ -0,0 +1,122 @@
+Input::
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/primary/a.ts]
+export { };
+
+//// [/primary/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": false,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/reference/b.ts]
+import * as mod_0 from "../primary/a"
+
+//// [/reference/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../primary"
+  }
+ ],
+ "files": [
+  "b.ts"
+ ]
+}
+
+
+
+Output::
+/lib/tsc --p /reference/tsconfig.json
+reference/tsconfig.json:7:3 - error TS6306: Referenced project '/primary' must have setting "composite": true.
+
+7   {
+    ~
+8    "path": "../primary"
+  ~~~~~~~~~~~~~~~~~~~~~~~
+9   }
+  ~~~
+
+
+Found 1 error in reference/tsconfig.json:7
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/reference/bin/b.d.ts]
+export {};
+
+
+//// [/reference/bin/b.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/reference/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-9543969340-import * as mod_0 from \"../primary/a\"","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+
+//// [/reference/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../b.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../b.ts": {
+        "original": {
+          "version": "-9543969340-import * as mod_0 from \"../primary/a\"",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-9543969340-import * as mod_0 from \"../primary/a\"",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../b.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "latestChangedDtsFile": "./b.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 813
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js
new file mode 100644
index 00000000000..c041e1c2bd1
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js
@@ -0,0 +1,137 @@
+Input::
+//// [/alpha/a.ts]
+export const m: number = 3;
+
+//// [/alpha/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/beta/b.ts]
+import { m } from '@alpha/a'
+
+//// [/beta/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin",
+  "baseUrl": "./",
+  "paths": {
+   "@alpha/*": [
+    "/alpha/*"
+   ]
+  }
+ },
+ "references": [
+  {
+   "path": "../alpha"
+  }
+ ]
+}
+
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+
+
+Output::
+/lib/tsc --p /beta/tsconfig.json
+beta/b.ts:1:19 - error TS6305: Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.
+
+1 import { m } from '@alpha/a'
+                    ~~~~~~~~~~
+
+
+Found 1 error in beta/b.ts:1
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/beta/bin/b.d.ts]
+export {};
+
+
+//// [/beta/bin/b.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/beta/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"2892088637-import { m } from '@alpha/a'","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"semanticDiagnosticsPerFile":[[2,[{"file":"../b.ts","start":18,"length":10,"messageText":"Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.","category":1,"code":6305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+
+//// [/beta/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../b.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../b.ts": {
+        "original": {
+          "version": "2892088637-import { m } from '@alpha/a'",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "2892088637-import { m } from '@alpha/a'",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../b.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "semanticDiagnosticsPerFile": [
+      [
+        "../b.ts",
+        [
+          {
+            "file": "../b.ts",
+            "start": 18,
+            "length": 10,
+            "messageText": "Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.",
+            "category": 1,
+            "code": 6305
+          }
+        ]
+      ],
+      "../../lib/lib.d.ts"
+    ],
+    "latestChangedDtsFile": "./b.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 1006
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js
new file mode 100644
index 00000000000..0a41fbe611f
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js
@@ -0,0 +1,131 @@
+Input::
+//// [/alpha/a.ts]
+export const m: number = 3;
+
+//// [/alpha/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/beta/b.ts]
+import { m } from '../alpha/a'
+
+//// [/beta/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../alpha"
+  }
+ ]
+}
+
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+
+
+Output::
+/lib/tsc --p /beta/tsconfig.json
+beta/b.ts:1:19 - error TS6305: Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.
+
+1 import { m } from '../alpha/a'
+                    ~~~~~~~~~~~~
+
+
+Found 1 error in beta/b.ts:1
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/beta/bin/b.d.ts]
+export {};
+
+
+//// [/beta/bin/b.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/beta/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-4853599800-import { m } from '../alpha/a'","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"exportedModulesMap":[],"semanticDiagnosticsPerFile":[[2,[{"file":"../b.ts","start":18,"length":12,"messageText":"Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.","category":1,"code":6305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+
+//// [/beta/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../b.ts"
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../b.ts": {
+        "original": {
+          "version": "-4853599800-import { m } from '../alpha/a'",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-4853599800-import { m } from '../alpha/a'",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        2,
+        "../b.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {},
+    "exportedModulesMap": {},
+    "semanticDiagnosticsPerFile": [
+      [
+        "../b.ts",
+        [
+          {
+            "file": "../b.ts",
+            "start": 18,
+            "length": 12,
+            "messageText": "Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.",
+            "category": 1,
+            "code": 6305
+          }
+        ]
+      ],
+      "../../lib/lib.d.ts"
+    ],
+    "latestChangedDtsFile": "./b.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 1009
+}
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js b/tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js
new file mode 100644
index 00000000000..238f144190a
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js
@@ -0,0 +1,156 @@
+Input::
+//// [/alpha/a.ts]
+export const m: number = 3;
+
+//// [/alpha/bin/a.d.ts]
+export { };
+
+//// [/alpha/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": []
+}
+
+//// [/beta/b.ts]
+import { m } from '../alpha/a'
+
+//// [/beta/tsconfig.json]
+{
+ "compilerOptions": {
+  "composite": true,
+  "outDir": "bin"
+ },
+ "references": [
+  {
+   "path": "../alpha"
+  }
+ ]
+}
+
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+
+
+Output::
+/lib/tsc --p /beta/tsconfig.json --explainFiles
+beta/b.ts:1:10 - error TS2305: Module '"../alpha/a"' has no exported member 'm'.
+
+1 import { m } from '../alpha/a'
+           ~
+
+lib/lib.d.ts
+  Default library for target 'es5'
+alpha/bin/a.d.ts
+  Imported via '../alpha/a' from file 'beta/b.ts'
+  File is output of project reference source 'alpha/a.ts'
+beta/b.ts
+  Matched by default include pattern '**/*'
+
+Found 1 error in beta/b.ts:1
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/beta/bin/b.d.ts]
+export {};
+
+
+//// [/beta/bin/b.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+
+
+//// [/beta/bin/tsconfig.tsbuildinfo]
+{"program":{"fileNames":["../../lib/lib.d.ts","../../alpha/bin/a.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-3531955686-export { };",{"version":"-4853599800-import { m } from '../alpha/a'","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"exportedModulesMap":[],"semanticDiagnosticsPerFile":[2,[3,[{"file":"../b.ts","start":9,"length":1,"messageText":"Module '\"../alpha/a\"' has no exported member 'm'.","category":1,"code":2305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+
+//// [/beta/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
+{
+  "program": {
+    "fileNames": [
+      "../../lib/lib.d.ts",
+      "../../alpha/bin/a.d.ts",
+      "../b.ts"
+    ],
+    "fileNamesList": [
+      [
+        "../../alpha/bin/a.d.ts"
+      ]
+    ],
+    "fileInfos": {
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "affectsGlobalScope": true
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "affectsGlobalScope": true
+      },
+      "../../alpha/bin/a.d.ts": {
+        "version": "-3531955686-export { };",
+        "signature": "-3531955686-export { };"
+      },
+      "../b.ts": {
+        "original": {
+          "version": "-4853599800-import { m } from '../alpha/a'",
+          "signature": "-3531856636-export {};\n"
+        },
+        "version": "-4853599800-import { m } from '../alpha/a'",
+        "signature": "-3531856636-export {};\n"
+      }
+    },
+    "root": [
+      [
+        3,
+        "../b.ts"
+      ]
+    ],
+    "options": {
+      "composite": true,
+      "outDir": "./"
+    },
+    "referencedMap": {
+      "../b.ts": [
+        "../../alpha/bin/a.d.ts"
+      ]
+    },
+    "exportedModulesMap": {},
+    "semanticDiagnosticsPerFile": [
+      "../../alpha/bin/a.d.ts",
+      [
+        "../b.ts",
+        [
+          {
+            "file": "../b.ts",
+            "start": 9,
+            "length": 1,
+            "messageText": "Module '\"../alpha/a\"' has no exported member 'm'.",
+            "category": 1,
+            "code": 2305
+          }
+        ]
+      ],
+      "../../lib/lib.d.ts"
+    ],
+    "latestChangedDtsFile": "./b.d.ts"
+  },
+  "version": "FakeTSVersion",
+  "size": 1054
+}
+