From d5a6c8edc63241cdc5084ee6d1d1de4cdc30762b Mon Sep 17 00:00:00 2001
From: Andrew Branch <andrewbranch@users.noreply.github.com>
Date: Tue, 6 Jun 2023 17:22:33 -0700
Subject: [PATCH] Test harness fixes (#54556)

---
 src/harness/harnessIO.ts                      | 40 +++++++------
 src/testRunner/compilerRunner.ts              | 39 ++++++------
 .../reference/amdLikeInputDeclarationEmit.js  |  2 +-
 .../reference/bundledDtsLateExportRenaming.js |  4 +-
 ...sextensions=false,noemit=false).errors.txt |  8 +--
 ...tsextensions=true,noemit=false).errors.txt |  8 +--
 ...onSourceDirectoryDoesNotContainAllFiles.js |  4 +-
 ...rationFileOverwriteErrorWithOut.errors.txt |  8 +--
 ...clarationFileOverwriteErrorWithOut.symbols |  4 +-
 ...declarationFileOverwriteErrorWithOut.types |  4 +-
 ...eclarationFilesGeneratingTypeReferences.js |  4 +-
 .../reference/declarationMapsOutFile.js.map   |  4 +-
 .../declarationMapsOutFile.sourcemap.txt      | 10 ++--
 .../reference/declarationMapsOutFile2.js.map  |  4 +-
 .../declarationMapsOutFile2.sourcemap.txt     | 10 ++--
 .../declarationMapsWithSourceMap.js.map       |  8 +--
 ...declarationMapsWithSourceMap.sourcemap.txt | 20 +++----
 .../jsDeclarationsJSDocRedirectedLookups.js   | 12 ++--
 ...sDeclarationsNonIdentifierInferredNames.js |  4 +-
 .../jsDeclarationsReactComponents.js          |  6 +-
 ...ompilationWithMapFileAsJsWithOutDir.js.map |  2 +-
 ...ionWithMapFileAsJsWithOutDir.sourcemap.txt |  6 +-
 ...rationFileNameSameAsInputJsFile.errors.txt |  4 --
 ...OutDeclarationFileNameSameAsInputJsFile.js |  5 ++
 ...ithOutFileNameSameAsInputJsFile.errors.txt |  8 +--
 ...onWithOutFileNameSameAsInputJsFile.symbols |  4 +-
 ...tionWithOutFileNameSameAsInputJsFile.types |  4 +-
 .../reference/library-reference-1.trace.json  | 56 ++++++++++--------
 .../reference/library-reference-10.trace.json | 59 ++++++++++---------
 .../reference/library-reference-15.trace.json | 48 +++++++--------
 .../reference/library-reference-5.trace.json  | 24 ++++----
 ...brary-reference-scoped-packages.trace.json |  6 +-
 ...sAllowJsImportAssignment(module=node16).js |  6 +-
 ...llowJsImportAssignment(module=nodenext).js |  6 +-
 ...ImportHelpersCollisions2(module=node16).js |  2 +-
 ...portHelpersCollisions2(module=nodenext).js |  2 +-
 tests/baselines/reference/out-flag2.js.map    |  4 +-
 .../reference/out-flag2.sourcemap.txt         | 10 ++--
 tests/baselines/reference/out-flag3.js.map    |  4 +-
 .../reference/out-flag3.sourcemap.txt         | 10 ++--
 .../reference/outModuleConcatAmd.js.map       |  4 +-
 .../outModuleConcatAmd.sourcemap.txt          | 10 ++--
 .../reference/outModuleConcatSystem.js.map    |  4 +-
 .../outModuleConcatSystem.sourcemap.txt       | 10 ++--
 .../reference/outModuleTripleSlashRefs.js     |  2 +-
 .../reference/outModuleTripleSlashRefs.js.map |  4 +-
 .../outModuleTripleSlashRefs.sourcemap.txt    | 14 ++---
 .../baselines/reference/requireOfJsonFile.js  |  4 +-
 .../reference/requireOfJsonFileNonRelative.js |  2 +-
 ...reOfJsonFileNonRelativeWithoutExtension.js |  2 +-
 ...NonRelativeWithoutExtensionResolvesToTs.js |  4 +-
 .../reference/requireOfJsonFileTypes.js       | 16 ++---
 .../reference/requireOfJsonFileWithAmd.js     |  4 +-
 .../requireOfJsonFileWithDeclaration.js       |  6 +-
 .../requireOfJsonFileWithEmptyObject.js       |  4 +-
 ...uireOfJsonFileWithEmptyObjectWithErrors.js |  4 +-
 .../reference/requireOfJsonFileWithErrors.js  |  4 +-
 .../requireOfJsonFileWithModuleEmitNone.js    |  4 +-
 ...equireOfJsonFileWithModuleEmitUndefined.js |  4 +-
 ...JsonFileWithModuleNodeResolutionEmitAmd.js |  4 +-
 ...eWithModuleNodeResolutionEmitAmdOutFile.js |  2 +-
 ...nFileWithModuleNodeResolutionEmitEs2015.js |  4 +-
 ...nFileWithModuleNodeResolutionEmitEsNext.js |  4 +-
 ...sonFileWithModuleNodeResolutionEmitNone.js |  4 +-
 ...nFileWithModuleNodeResolutionEmitSystem.js |  4 +-
 ...JsonFileWithModuleNodeResolutionEmitUmd.js |  4 +-
 ...leWithModuleNodeResolutionEmitUndefined.js |  4 +-
 .../requireOfJsonFileWithNoContent.js         |  4 +-
 .../requireOfJsonFileWithSourceMap.js         |  4 +-
 .../requireOfJsonFileWithSourceMap.js.map     |  4 +-
 ...quireOfJsonFileWithSourceMap.sourcemap.txt |  6 +-
 .../requireOfJsonFileWithTraillingComma.js    |  4 +-
 .../requireOfJsonFileWithoutAllowJs.js        |  4 +-
 ...requireOfJsonFileWithoutEsModuleInterop.js |  4 +-
 .../requireOfJsonFileWithoutExtension.js      |  4 +-
 ...eOfJsonFileWithoutExtensionResolvesToTs.js |  6 +-
 ...quireOfJsonFileWithoutResolveJsonModule.js |  2 +-
 ...sourceMapWithCaseSensitiveFileNames.js.map |  2 +-
 ...apWithCaseSensitiveFileNames.sourcemap.txt | 10 ++--
 ...rceMapWithNonCaseSensitiveFileNames.js.map |  3 +-
 ...ithNonCaseSensitiveFileNames.sourcemap.txt | 10 ++--
 ...larationEmitBundleWithAmbientReferences.ts |  2 +-
 .../declarationEmitPathMappingMonorepo.ts     |  4 +-
 ...ationEmitPrefersPathKindBasedOnBundling.ts |  4 +-
 ...tionEmitPrefersPathKindBasedOnBundling2.ts |  4 +-
 ...clarationEmitReexportedSymlinkReference.ts |  4 +-
 ...larationEmitReexportedSymlinkReference2.ts |  4 +-
 ...larationEmitReexportedSymlinkReference3.ts |  4 +-
 .../declarationFileOverwriteErrorWithOut.ts   |  6 +-
 ...ilesEmittingIntoSameOutputWithOutOption.ts |  2 +-
 ...DeclarationEmitExportedClassWithExtends.ts |  2 +-
 ...OutDeclarationFileNameSameAsInputJsFile.ts |  2 +-
 ...ilationWithOutFileNameSameAsInputJsFile.ts |  6 +-
 .../nodeNextPackageImportMapRootDir.ts        |  2 +-
 ...odeNextPackageSelfNameWithOutDirRootDir.ts |  2 +-
 .../sourceMapWithCaseSensitiveFileNames.ts    |  2 +-
 ...eMapWithCaseSensitiveFileNamesAndOutDir.ts |  2 +-
 .../sourceMapWithNonCaseSensitiveFileNames.ts |  2 +-
 ...pWithNonCaseSensitiveFileNamesAndOutDir.ts |  2 +-
 .../symbolLinkDeclarationEmitModuleNames.ts   |  2 +-
 ...LinkDeclarationEmitModuleNamesImportRef.ts |  4 +-
 .../outFilerootDirModuleNamesAmd.ts           |  2 +-
 .../outFilerootDirModuleNamesSystem.ts        |  2 +-
 .../references/library-reference-1.ts         |  3 +-
 .../references/library-reference-10.ts        |  3 +-
 .../references/library-reference-15.ts        |  3 +-
 106 files changed, 380 insertions(+), 371 deletions(-)

diff --git a/src/harness/harnessIO.ts b/src/harness/harnessIO.ts
index e1a4d5bb71b..dd23a172032 100644
--- a/src/harness/harnessIO.ts
+++ b/src/harness/harnessIO.ts
@@ -403,6 +403,7 @@ export namespace Compiler {
         compilerOptions: ts.CompilerOptions | undefined,
         // Current directory is needed for rwcRunner to be able to use currentDirectory defined in json file
         currentDirectory: string | undefined,
+        rootDir?: string,
         symlinks?: vfs.FileSet
     ): compiler.CompilationResult {
         const options: ts.CompilerOptions & HarnessOptions = compilerOptions ? ts.cloneCompilerOptions(compilerOptions) : { noResolve: false };
@@ -424,12 +425,12 @@ export namespace Compiler {
                 typeScriptVersion = harnessSettings.typeScriptVersion;
             }
         }
-        if (options.rootDirs) {
-            options.rootDirs = ts.map(options.rootDirs, d => ts.getNormalizedAbsolutePath(d, currentDirectory));
-        }
 
         const useCaseSensitiveFileNames = options.useCaseSensitiveFileNames !== undefined ? options.useCaseSensitiveFileNames : true;
-        const programFileNames = inputFiles.map(file => file.unitName).filter(fileName => !ts.fileExtensionIs(fileName, ts.Extension.Json));
+        // When a tsconfig is present, root names passed to createProgram should already be absolute
+        const programFileNames = inputFiles
+            .map(file => options.configFile ? ts.getNormalizedAbsolutePath(file.unitName, currentDirectory) : file.unitName)
+            .filter(fileName => !ts.fileExtensionIs(fileName, ts.Extension.Json));
 
         // Files from built\local that are requested by test "@includeBuiltFiles" to be in the context.
         // Treat them as library files, so include them in build, but not in baselines.
@@ -449,6 +450,8 @@ export namespace Compiler {
         if (symlinks) {
             fs.apply(symlinks);
         }
+
+        ts.assign(options, ts.convertToOptionsWithAbsolutePaths(options, path => ts.getNormalizedAbsolutePath(ts.getNormalizedAbsolutePath(path, rootDir), currentDirectory)));
         const host = new fakes.CompilerHost(fs, options);
         const result = compiler.compileFiles(host, programFileNames, options, typeScriptVersion);
         result.symlinks = symlinks;
@@ -499,7 +502,10 @@ export namespace Compiler {
             else if (vpath.isTypeScript(file.unitName) || (vpath.isJavaScript(file.unitName) && ts.getAllowJSCompilerOption(options))) {
                 const declFile = findResultCodeFile(file.unitName);
                 if (declFile && !findUnit(declFile.file, declInputFiles) && !findUnit(declFile.file, declOtherFiles)) {
-                    dtsFiles.push({ unitName: declFile.file, content: Utils.removeByteOrderMark(declFile.text) });
+                    dtsFiles.push({
+                        unitName: declFile.file,
+                        content: Utils.removeByteOrderMark(declFile.text)
+                    });
                 }
             }
         }
@@ -539,7 +545,7 @@ export namespace Compiler {
             return;
         }
         const { declInputFiles, declOtherFiles, harnessSettings, options, currentDirectory } = context;
-        const output = compileFiles(declInputFiles, declOtherFiles, harnessSettings, options, currentDirectory, symlinks);
+        const output = compileFiles(declInputFiles, declOtherFiles, harnessSettings, options, currentDirectory, /*rootDir*/ undefined, symlinks);
         return { declInputFiles, declOtherFiles, declResult: output };
     }
 
@@ -1172,13 +1178,13 @@ export namespace TestCaseParser {
     const optionRegex = /^[\/]{2}\s*@(\w+)\s*:\s*([^\r\n]*)/gm;  // multiple matches on multiple lines
     const linkRegex = /^[\/]{2}\s*@link\s*:\s*([^\r\n]*)\s*->\s*([^\r\n]*)/gm;  // multiple matches on multiple lines
 
-    export function parseSymlinkFromTest(line: string, symlinks: vfs.FileSet | undefined) {
+    export function parseSymlinkFromTest(line: string, symlinks: vfs.FileSet | undefined, absoluteRootDir?: string) {
         const linkMetaData = linkRegex.exec(line);
         linkRegex.lastIndex = 0;
         if (!linkMetaData) return undefined;
 
         if (!symlinks) symlinks = {};
-        symlinks[linkMetaData[2].trim()] = new vfs.Symlink(linkMetaData[1].trim());
+        symlinks[ts.getNormalizedAbsolutePath(linkMetaData[2].trim(), absoluteRootDir)] = new vfs.Symlink(ts.getNormalizedAbsolutePath(linkMetaData[1].trim(), absoluteRootDir));
         return symlinks;
     }
 
@@ -1202,7 +1208,7 @@ export namespace TestCaseParser {
     }
 
     /** Given a test file containing // @FileName directives, return an array of named units of code to be added to an existing compiler instance */
-    export function makeUnitsFromTest(code: string, fileName: string, rootDir?: string, settings = extractCompilerSettings(code)): TestCaseContent {
+    export function makeUnitsFromTest(code: string, fileName: string, rootDir: string, settings = extractCompilerSettings(code)): TestCaseContent {
         // List of all the subfiles we've parsed out
         const testUnitData: TestUnitData[] = [];
 
@@ -1217,7 +1223,7 @@ export namespace TestCaseParser {
 
         for (const line of lines) {
             let testMetaData: RegExpExecArray | null;
-            const possiblySymlinks = parseSymlinkFromTest(line, symlinks);
+            const possiblySymlinks = parseSymlinkFromTest(line, symlinks, ts.getNormalizedAbsolutePath(rootDir, vfs.srcFolder));
             if (possiblySymlinks) {
                 symlinks = possiblySymlinks;
             }
@@ -1288,9 +1294,9 @@ export namespace TestCaseParser {
                     const files: string[] = [];
                     const directories = new Set<string>();
                     for (const unit of testUnitData) {
-                        const unitName = ts.getNormalizedAbsolutePath(unit.name, rootDir);
-                        if (unitName.toLowerCase().startsWith(dir.toLowerCase())) {
-                            let path = unitName.substring(dir.length);
+                        const fileName = ts.getNormalizedAbsolutePath(ts.getNormalizedAbsolutePath(unit.name, rootDir), vfs.srcFolder);
+                        if (fileName.toLowerCase().startsWith(dir.toLowerCase())) {
+                            let path = fileName.substring(dir.length);
                             if (path.startsWith("/")) {
                                 path = path.substring(1);
                             }
@@ -1319,11 +1325,9 @@ export namespace TestCaseParser {
             if (getConfigNameFromFileName(data.name)) {
                 const configJson = ts.parseJsonText(data.name, data.content);
                 assert.isTrue(configJson.endOfFileToken !== undefined);
-                let baseDir = ts.normalizePath(ts.getDirectoryPath(data.name));
-                if (rootDir) {
-                    baseDir = ts.getNormalizedAbsolutePath(baseDir, rootDir);
-                }
-                tsConfig = ts.parseJsonSourceFileConfigFileContent(configJson, parseConfigHost, baseDir, /*existingOptions*/ undefined, ts.getNormalizedAbsolutePath(data.name, rootDir));
+                const configFileName = ts.getNormalizedAbsolutePath(ts.getNormalizedAbsolutePath(data.name, rootDir), vfs.srcFolder);
+                const configDir = ts.getDirectoryPath(configFileName);
+                tsConfig = ts.parseJsonSourceFileConfigFileContent(configJson, parseConfigHost, configDir, /*existingOptions*/ undefined, configFileName);
                 tsConfigFileUnitData = data;
 
                 // delete entry from the list
diff --git a/src/testRunner/compilerRunner.ts b/src/testRunner/compilerRunner.ts
index 27256e99e3d..11ba8d19f97 100644
--- a/src/testRunner/compilerRunner.ts
+++ b/src/testRunner/compilerRunner.ts
@@ -92,9 +92,9 @@ export class CompilerBaselineRunner extends RunnerBase {
         let compilerTest!: CompilerTest;
         before(() => {
             let payload;
-            let rootDir = ts.combinePaths(vfs.srcFolder, fileName.indexOf("conformance") === -1 ? "tests/cases/compiler/" : ts.getDirectoryPath(fileName) + "/");
+            let rootDir = fileName.indexOf("conformance") === -1 ? "tests/cases/compiler/" : ts.getDirectoryPath(fileName) + "/";
             if (test && test.content) {
-                rootDir = ts.combinePaths(vfs.srcFolder, test.file.indexOf("conformance") === -1 ? "tests/cases/compiler/" : ts.getDirectoryPath(test.file) + "/");
+                rootDir = test.file.indexOf("conformance") === -1 ? "tests/cases/compiler/" : ts.getDirectoryPath(test.file) + "/";
                 payload = TestCaseParser.makeUnitsFromTest(test.content, test.file, rootDir);
             }
             compilerTest = new CompilerTest(fileName, rootDir, payload, configuration);
@@ -179,7 +179,8 @@ class CompilerTest {
     // equivalent to other files on the file system not directly passed to the compiler (ie things that are referenced by other files)
     private otherFiles: Compiler.TestFile[];
 
-    constructor(fileName: string, rootDir: string, testCaseContent?: TestCaseParser.TestCaseContent, configurationOverrides?: TestCaseParser.CompilerSettings) {
+    constructor(fileName: string, private rootDir: string, testCaseContent?: TestCaseParser.TestCaseContent, configurationOverrides?: TestCaseParser.CompilerSettings) {
+        const absoluteRootDir = ts.getNormalizedAbsolutePath(rootDir, vfs.srcFolder);
         this.fileName = fileName;
         this.justName = vpath.basename(fileName);
         this.configuredName = this.justName;
@@ -218,20 +219,20 @@ class CompilerTest {
         this.tsConfigFiles = [];
         if (testCaseContent.tsConfig) {
             tsConfigOptions = ts.cloneCompilerOptions(testCaseContent.tsConfig.options);
-            this.tsConfigFiles.push(this.createHarnessTestFile(testCaseContent.tsConfigFileUnitData!, rootDir, tsConfigOptions.configFilePath));
+            this.tsConfigFiles.push(this.createHarnessTestFile(testCaseContent.tsConfigFileUnitData!));
             for (const unit of units) {
-                if (testCaseContent.tsConfig.fileNames.includes(ts.getNormalizedAbsolutePath(unit.name, rootDir))) {
-                    this.toBeCompiled.push(this.createHarnessTestFile(unit, rootDir));
+                if (testCaseContent.tsConfig.fileNames.includes(ts.getNormalizedAbsolutePath(unit.name, absoluteRootDir))) {
+                    this.toBeCompiled.push(this.createHarnessTestFile(unit));
                 }
                 else {
-                    this.otherFiles.push(this.createHarnessTestFile(unit, rootDir));
+                    this.otherFiles.push(this.createHarnessTestFile(unit));
                 }
             }
         }
         else {
             const baseUrl = this.harnessSettings.baseUrl;
             if (baseUrl !== undefined && !ts.isRootedDiskPath(baseUrl)) {
-                this.harnessSettings.baseUrl = ts.getNormalizedAbsolutePath(baseUrl, rootDir);
+                this.harnessSettings.baseUrl = ts.getNormalizedAbsolutePath(baseUrl, absoluteRootDir);
             }
 
             const lastUnit = units[units.length - 1];
@@ -240,22 +241,21 @@ class CompilerTest {
             // otherwise, assume all files are just meant to be in the same compilation session without explicit references to one another.
 
             if (testCaseContent.settings.noImplicitReferences || /require\(/.test(lastUnit.content) || /reference\spath/.test(lastUnit.content)) {
-                this.toBeCompiled.push(this.createHarnessTestFile(lastUnit, rootDir));
+                this.toBeCompiled.push(this.createHarnessTestFile(lastUnit));
                 units.forEach(unit => {
                     if (unit.name !== lastUnit.name) {
-                        this.otherFiles.push(this.createHarnessTestFile(unit, rootDir));
+                        this.otherFiles.push(this.createHarnessTestFile(unit));
                     }
                 });
             }
             else {
                 this.toBeCompiled = units.map(unit => {
-                    return this.createHarnessTestFile(unit, rootDir);
+                    return this.createHarnessTestFile(unit);
                 });
             }
         }
 
         if (tsConfigOptions && tsConfigOptions.configFilePath !== undefined) {
-            tsConfigOptions.configFilePath = ts.combinePaths(rootDir, tsConfigOptions.configFilePath);
             tsConfigOptions.configFile!.fileName = tsConfigOptions.configFilePath;
         }
 
@@ -265,6 +265,7 @@ class CompilerTest {
             this.harnessSettings,
             /*options*/ tsConfigOptions,
             /*currentDirectory*/ this.harnessSettings.currentDirectory,
+            this.rootDir,
             testCaseContent.symlinks
         );
 
@@ -352,13 +353,11 @@ class CompilerTest {
         );
     }
 
-    private makeUnitName(name: string, root: string) {
-        const path = ts.toPath(name, root, ts.identity);
-        const pathStart = ts.toPath(IO.getCurrentDirectory(), "", ts.identity);
-        return pathStart ? path.replace(pathStart, "/") : path;
-    }
-
-    private createHarnessTestFile(lastUnit: TestCaseParser.TestUnitData, rootDir: string, unitName?: string): Compiler.TestFile {
-        return { unitName: unitName || this.makeUnitName(lastUnit.name, rootDir), content: lastUnit.content, fileOptions: lastUnit.fileOptions };
+    private createHarnessTestFile(unit: TestCaseParser.TestUnitData): Compiler.TestFile {
+        return {
+            unitName: ts.getNormalizedAbsolutePath(unit.name, this.rootDir),
+            content: unit.content,
+            fileOptions: unit.fileOptions
+        };
     }
 }
diff --git a/tests/baselines/reference/amdLikeInputDeclarationEmit.js b/tests/baselines/reference/amdLikeInputDeclarationEmit.js
index a34697f4f3e..584a304216a 100644
--- a/tests/baselines/reference/amdLikeInputDeclarationEmit.js
+++ b/tests/baselines/reference/amdLikeInputDeclarationEmit.js
@@ -33,7 +33,7 @@ define("lib/ExtendedClass", ["deps/BaseClass"],
 
 
 //// [ExtendedClass.d.ts]
-/// <reference path="../tests/cases/compiler/deps/BaseClass.d.ts" />
+/// <reference path="../deps/BaseClass.d.ts" />
 export = ExtendedClass;
 declare const ExtendedClass: new () => {
     f: () => "something";
diff --git a/tests/baselines/reference/bundledDtsLateExportRenaming.js b/tests/baselines/reference/bundledDtsLateExportRenaming.js
index c2a8d6867a2..ab2b3cc7aa1 100644
--- a/tests/baselines/reference/bundledDtsLateExportRenaming.js
+++ b/tests/baselines/reference/bundledDtsLateExportRenaming.js
@@ -54,10 +54,10 @@ declare module "index" {
 //// [DtsFileErrors]
 
 
-dist/out.d.ts(10,33): error TS2307: Cannot find module 'nested' or its corresponding type declarations.
+tests/cases/compiler/dist/out.d.ts(10,33): error TS2307: Cannot find module 'nested' or its corresponding type declarations.
 
 
-==== ./dist/out.d.ts (1 errors) ====
+==== tests/cases/compiler/dist/out.d.ts (1 errors) ====
     declare module "nested/shared" {
         export class B {
         }
diff --git a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).errors.txt b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).errors.txt
index b554754ebab..e2b878a28c6 100644
--- a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).errors.txt
+++ b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).errors.txt
@@ -1,5 +1,5 @@
-error TS5056: Cannot write file 'out/b.js' because it would be overwritten by multiple input files.
-error TS5056: Cannot write file 'out/c.js' because it would be overwritten by multiple input files.
+error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/b.js' because it would be overwritten by multiple input files.
+error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/c.js' because it would be overwritten by multiple input files.
 error TS6054: File '/project/e.txt' has an unsupported extension. The only supported extensions are '.ts', '.tsx', '.d.ts', '.js', '.jsx', '.cts', '.d.cts', '.cjs', '.mts', '.d.mts', '.mjs'.
   The file is in the program because:
     Root file specified for compilation
@@ -13,8 +13,8 @@ error TS6054: File '/project/e.txt' has an unsupported extension. The only suppo
 /project/types.d.ts(2,16): error TS2846: A declaration file cannot be imported without 'import type'. Did you mean to import an implementation file './a.js' instead?
 
 
-!!! error TS5056: Cannot write file 'out/b.js' because it would be overwritten by multiple input files.
-!!! error TS5056: Cannot write file 'out/c.js' because it would be overwritten by multiple input files.
+!!! error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/b.js' because it would be overwritten by multiple input files.
+!!! error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/c.js' because it would be overwritten by multiple input files.
 !!! error TS6054: File '/project/e.txt' has an unsupported extension. The only supported extensions are '.ts', '.tsx', '.d.ts', '.js', '.jsx', '.cts', '.d.cts', '.cjs', '.mts', '.d.mts', '.mjs'.
 !!! error TS6054:   The file is in the program because:
 !!! error TS6054:     Root file specified for compilation
diff --git a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).errors.txt b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).errors.txt
index feed6ec3922..02664a5112e 100644
--- a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).errors.txt
+++ b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).errors.txt
@@ -1,5 +1,5 @@
-error TS5056: Cannot write file 'out/b.js' because it would be overwritten by multiple input files.
-error TS5056: Cannot write file 'out/c.js' because it would be overwritten by multiple input files.
+error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/b.js' because it would be overwritten by multiple input files.
+error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/c.js' because it would be overwritten by multiple input files.
 error TS5096: Option 'allowImportingTsExtensions' can only be used when either 'noEmit' or 'emitDeclarationOnly' is set.
 error TS6054: File '/project/e.txt' has an unsupported extension. The only supported extensions are '.ts', '.tsx', '.d.ts', '.js', '.jsx', '.cts', '.d.cts', '.cjs', '.mts', '.d.mts', '.mjs'.
   The file is in the program because:
@@ -9,8 +9,8 @@ error TS6054: File '/project/e.txt' has an unsupported extension. The only suppo
 /project/types.d.ts(2,16): error TS2846: A declaration file cannot be imported without 'import type'. Did you mean to import an implementation file './a.ts' instead?
 
 
-!!! error TS5056: Cannot write file 'out/b.js' because it would be overwritten by multiple input files.
-!!! error TS5056: Cannot write file 'out/c.js' because it would be overwritten by multiple input files.
+!!! error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/b.js' because it would be overwritten by multiple input files.
+!!! error TS5056: Cannot write file 'tests/cases/conformance/moduleResolution/bundler/out/c.js' because it would be overwritten by multiple input files.
 !!! error TS5096: Option 'allowImportingTsExtensions' can only be used when either 'noEmit' or 'emitDeclarationOnly' is set.
 !!! error TS6054: File '/project/e.txt' has an unsupported extension. The only supported extensions are '.ts', '.tsx', '.d.ts', '.js', '.jsx', '.cts', '.d.cts', '.cjs', '.mts', '.d.mts', '.mjs'.
 !!! error TS6054:   The file is in the program because:
diff --git a/tests/baselines/reference/declarationEmitCommonSourceDirectoryDoesNotContainAllFiles.js b/tests/baselines/reference/declarationEmitCommonSourceDirectoryDoesNotContainAllFiles.js
index cf0c04350a8..5a736583a62 100644
--- a/tests/baselines/reference/declarationEmitCommonSourceDirectoryDoesNotContainAllFiles.js
+++ b/tests/baselines/reference/declarationEmitCommonSourceDirectoryDoesNotContainAllFiles.js
@@ -28,10 +28,10 @@ declare module "index" {
 //// [DtsFileErrors]
 
 
-dist/index.d.ts(2,23): error TS2307: Cannot find module 'b' or its corresponding type declarations.
+/a/tests/cases/compiler/dist/index.d.ts(2,23): error TS2307: Cannot find module 'b' or its corresponding type declarations.
 
 
-==== dist/index.d.ts (1 errors) ====
+==== /a/tests/cases/compiler/dist/index.d.ts (1 errors) ====
     declare module "src/index" {
         import { B } from "b";
                           ~~~
diff --git a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.errors.txt b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.errors.txt
index e065bfe5aa1..8fd3b9e460d 100644
--- a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.errors.txt
+++ b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.errors.txt
@@ -1,18 +1,18 @@
-error TS5055: Cannot write file 'tests/cases/compiler/out.d.ts' because it would overwrite input file.
+error TS5055: Cannot write file '/out.d.ts' because it would overwrite input file.
   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 error TS5101: Option 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify compilerOption '"ignoreDeprecations": "5.0"' to silence this error.
   Use 'outFile' instead.
 
 
-!!! error TS5055: Cannot write file 'tests/cases/compiler/out.d.ts' because it would overwrite input file.
+!!! error TS5055: Cannot write file '/out.d.ts' because it would overwrite input file.
 !!! error TS5055:   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 !!! error TS5101: Option 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify compilerOption '"ignoreDeprecations": "5.0"' to silence this error.
 !!! error TS5101:   Use 'outFile' instead.
-==== tests/cases/compiler/out.d.ts (0 errors) ====
+==== /out.d.ts (0 errors) ====
     declare class c {
     }
     
-==== tests/cases/compiler/a.ts (0 errors) ====
+==== /a.ts (0 errors) ====
     class d {
     }
     
\ No newline at end of file
diff --git a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.symbols b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.symbols
index 31607388f7b..94df6948296 100644
--- a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.symbols
+++ b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.symbols
@@ -1,9 +1,9 @@
-=== tests/cases/compiler/out.d.ts ===
+=== /out.d.ts ===
 declare class c {
 >c : Symbol(c, Decl(out.d.ts, 0, 0))
 }
 
-=== tests/cases/compiler/a.ts ===
+=== /a.ts ===
 class d {
 >d : Symbol(d, Decl(a.ts, 0, 0))
 }
diff --git a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.types b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.types
index 431781bbca4..76ed6a6f027 100644
--- a/tests/baselines/reference/declarationFileOverwriteErrorWithOut.types
+++ b/tests/baselines/reference/declarationFileOverwriteErrorWithOut.types
@@ -1,9 +1,9 @@
-=== tests/cases/compiler/out.d.ts ===
+=== /out.d.ts ===
 declare class c {
 >c : c
 }
 
-=== tests/cases/compiler/a.ts ===
+=== /a.ts ===
 class d {
 >d : d
 }
diff --git a/tests/baselines/reference/declarationFilesGeneratingTypeReferences.js b/tests/baselines/reference/declarationFilesGeneratingTypeReferences.js
index bbcd9f7f69b..e310d5be711 100644
--- a/tests/baselines/reference/declarationFilesGeneratingTypeReferences.js
+++ b/tests/baselines/reference/declarationFilesGeneratingTypeReferences.js
@@ -29,7 +29,7 @@ declare namespace Test {
 //// [DtsFileErrors]
 
 
-out.d.ts(1,23): error TS2688: Cannot find type definition file for 'jquery'.
+tests/cases/compiler/out.d.ts(1,23): error TS2688: Cannot find type definition file for 'jquery'.
 
 
 ==== /a/node_modules/@types/jquery/index.d.ts (0 errors) ====
@@ -37,7 +37,7 @@ out.d.ts(1,23): error TS2688: Cannot find type definition file for 'jquery'.
     
     }
     
-==== out.d.ts (1 errors) ====
+==== tests/cases/compiler/out.d.ts (1 errors) ====
     /// <reference types="jquery" />
                           ~~~~~~
 !!! error TS2688: Cannot find type definition file for 'jquery'.
diff --git a/tests/baselines/reference/declarationMapsOutFile.js.map b/tests/baselines/reference/declarationMapsOutFile.js.map
index 31ad85d6650..efa89ba1383 100644
--- a/tests/baselines/reference/declarationMapsOutFile.js.map
+++ b/tests/baselines/reference/declarationMapsOutFile.js.map
@@ -1,3 +1,3 @@
 //// [bundle.d.ts.map]
-{"version":3,"file":"bundle.d.ts","sourceRoot":"","sources":["tests/cases/compiler/a.ts","tests/cases/compiler/index.ts"],"names":[],"mappings":";IAAA,MAAM,OAAO,GAAG;QACZ,OAAO,CAAC,GAAG;YAAC,CAAC,EAAE,MAAM,CAAA;SAAC;;;QAGtB,MAAM,CAAC,IAAI;KAGd;;;ICPD,OAAO,EAAC,GAAG,EAAC,UAAY;IAExB,MAAM,CAAC,KAAY,CAAC;IAGpB,MAAM,CAAC,IAAI,CAAC;;KAAqB,CAAC;IAClC,OAAO,EAAE,CAAC,EAAE,GAAG,EAAE,CAAC"}
-//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSBtb2R1bGUgImEiIHsNCiAgICBleHBvcnQgY2xhc3MgRm9vIHsNCiAgICAgICAgZG9UaGluZyh4OiB7DQogICAgICAgICAgICBhOiBudW1iZXI7DQogICAgICAgIH0pOiB7DQogICAgICAgICAgICBiOiBudW1iZXI7DQogICAgICAgIH07DQogICAgICAgIHN0YXRpYyBtYWtlKCk6IEZvbzsNCiAgICB9DQp9DQpkZWNsYXJlIG1vZHVsZSAiaW5kZXgiIHsNCiAgICBpbXBvcnQgeyBGb28gfSBmcm9tICJhIjsNCiAgICBjb25zdCBjOiBGb287DQogICAgZXhwb3J0IGxldCB4OiB7DQogICAgICAgIGI6IG51bWJlcjsNCiAgICB9Ow0KICAgIGV4cG9ydCB7IGMsIEZvbyB9Ow0KfQ0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9YnVuZGxlLmQudHMubWFw,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVuZGxlLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJ0ZXN0cy9jYXNlcy9jb21waWxlci9hLnRzIiwidGVzdHMvY2FzZXMvY29tcGlsZXIvaW5kZXgudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IjtJQUFBLE1BQU0sT0FBTyxHQUFHO1FBQ1osT0FBTyxDQUFDLEdBQUc7WUFBQyxDQUFDLEVBQUUsTUFBTSxDQUFBO1NBQUM7OztRQUd0QixNQUFNLENBQUMsSUFBSTtLQUdkOzs7SUNQRCxPQUFPLEVBQUMsR0FBRyxFQUFDLFVBQVk7SUFFeEIsTUFBTSxDQUFDLEtBQVksQ0FBQztJQUdwQixNQUFNLENBQUMsSUFBSSxDQUFDOztLQUFxQixDQUFDO0lBQ2xDLE9BQU8sRUFBRSxDQUFDLEVBQUUsR0FBRyxFQUFFLENBQUMifQ==,ZXhwb3J0IGNsYXNzIEZvbyB7CiAgICBkb1RoaW5nKHg6IHthOiBudW1iZXJ9KSB7CiAgICAgICAgcmV0dXJuIHtiOiB4LmF9OwogICAgfQogICAgc3RhdGljIG1ha2UoKSB7CiAgICAgICAgcmV0dXJuIG5ldyBGb28oKTsKICAgIH0KfQ==,aW1wb3J0IHtGb299IGZyb20gIi4vYSI7Cgpjb25zdCBjID0gbmV3IEZvbygpOwpjLmRvVGhpbmcoe2E6IDQyfSk7CgpleHBvcnQgbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7CmV4cG9ydCB7IGMsIEZvbyB9Owo=
+{"version":3,"file":"bundle.d.ts","sourceRoot":"","sources":["a.ts","index.ts"],"names":[],"mappings":";IAAA,MAAM,OAAO,GAAG;QACZ,OAAO,CAAC,GAAG;YAAC,CAAC,EAAE,MAAM,CAAA;SAAC;;;QAGtB,MAAM,CAAC,IAAI;KAGd;;;ICPD,OAAO,EAAC,GAAG,EAAC,UAAY;IAExB,MAAM,CAAC,KAAY,CAAC;IAGpB,MAAM,CAAC,IAAI,CAAC;;KAAqB,CAAC;IAClC,OAAO,EAAE,CAAC,EAAE,GAAG,EAAE,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSBtb2R1bGUgImEiIHsNCiAgICBleHBvcnQgY2xhc3MgRm9vIHsNCiAgICAgICAgZG9UaGluZyh4OiB7DQogICAgICAgICAgICBhOiBudW1iZXI7DQogICAgICAgIH0pOiB7DQogICAgICAgICAgICBiOiBudW1iZXI7DQogICAgICAgIH07DQogICAgICAgIHN0YXRpYyBtYWtlKCk6IEZvbzsNCiAgICB9DQp9DQpkZWNsYXJlIG1vZHVsZSAiaW5kZXgiIHsNCiAgICBpbXBvcnQgeyBGb28gfSBmcm9tICJhIjsNCiAgICBjb25zdCBjOiBGb287DQogICAgZXhwb3J0IGxldCB4OiB7DQogICAgICAgIGI6IG51bWJlcjsNCiAgICB9Ow0KICAgIGV4cG9ydCB7IGMsIEZvbyB9Ow0KfQ0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9YnVuZGxlLmQudHMubWFw,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVuZGxlLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJhLnRzIiwiaW5kZXgudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IjtJQUFBLE1BQU0sT0FBTyxHQUFHO1FBQ1osT0FBTyxDQUFDLEdBQUc7WUFBQyxDQUFDLEVBQUUsTUFBTSxDQUFBO1NBQUM7OztRQUd0QixNQUFNLENBQUMsSUFBSTtLQUdkOzs7SUNQRCxPQUFPLEVBQUMsR0FBRyxFQUFDLFVBQVk7SUFFeEIsTUFBTSxDQUFDLEtBQVksQ0FBQztJQUdwQixNQUFNLENBQUMsSUFBSSxDQUFDOztLQUFxQixDQUFDO0lBQ2xDLE9BQU8sRUFBRSxDQUFDLEVBQUUsR0FBRyxFQUFFLENBQUMifQ==,ZXhwb3J0IGNsYXNzIEZvbyB7CiAgICBkb1RoaW5nKHg6IHthOiBudW1iZXJ9KSB7CiAgICAgICAgcmV0dXJuIHtiOiB4LmF9OwogICAgfQogICAgc3RhdGljIG1ha2UoKSB7CiAgICAgICAgcmV0dXJuIG5ldyBGb28oKTsKICAgIH0KfQ==,aW1wb3J0IHtGb299IGZyb20gIi4vYSI7Cgpjb25zdCBjID0gbmV3IEZvbygpOwpjLmRvVGhpbmcoe2E6IDQyfSk7CgpleHBvcnQgbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7CmV4cG9ydCB7IGMsIEZvbyB9Owo=
diff --git a/tests/baselines/reference/declarationMapsOutFile.sourcemap.txt b/tests/baselines/reference/declarationMapsOutFile.sourcemap.txt
index 26c730e30c4..c5e85622abd 100644
--- a/tests/baselines/reference/declarationMapsOutFile.sourcemap.txt
+++ b/tests/baselines/reference/declarationMapsOutFile.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: bundle.d.ts
 mapUrl: bundle.d.ts.map
 sourceRoot: 
-sources: tests/cases/compiler/a.ts,tests/cases/compiler/index.ts
+sources: a.ts,index.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:bundle.d.ts
-sourceFile:tests/cases/compiler/a.ts
+emittedFile:tests/cases/compiler/bundle.d.ts
+sourceFile:a.ts
 -------------------------------------------------------------------
 >>>declare module "a" {
 >>>    export class Foo {
@@ -91,8 +91,8 @@ sourceFile:tests/cases/compiler/a.ts
 1 >Emitted(9, 6) Source(8, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:bundle.d.ts
-sourceFile:tests/cases/compiler/index.ts
+emittedFile:tests/cases/compiler/bundle.d.ts
+sourceFile:index.ts
 -------------------------------------------------------------------
 >>>}
 >>>declare module "index" {
diff --git a/tests/baselines/reference/declarationMapsOutFile2.js.map b/tests/baselines/reference/declarationMapsOutFile2.js.map
index 873bdf19820..9fbc681df5c 100644
--- a/tests/baselines/reference/declarationMapsOutFile2.js.map
+++ b/tests/baselines/reference/declarationMapsOutFile2.js.map
@@ -1,3 +1,3 @@
 //// [bundle.d.ts.map]
-{"version":3,"file":"bundle.d.ts","sourceRoot":"","sources":["tests/cases/compiler/a.ts","tests/cases/compiler/index.ts"],"names":[],"mappings":"AAAA,cAAM,GAAG;IACL,OAAO,CAAC,GAAG;QAAC,CAAC,EAAE,MAAM,CAAA;KAAC;;;IAGtB,MAAM,CAAC,IAAI;CAGd;ACPD,QAAA,MAAM,CAAC,KAAY,CAAC;AAGpB,QAAA,IAAI,CAAC;;CAAqB,CAAC"}
-//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSBjbGFzcyBGb28gew0KICAgIGRvVGhpbmcoeDogew0KICAgICAgICBhOiBudW1iZXI7DQogICAgfSk6IHsNCiAgICAgICAgYjogbnVtYmVyOw0KICAgIH07DQogICAgc3RhdGljIG1ha2UoKTogRm9vOw0KfQ0KZGVjbGFyZSBjb25zdCBjOiBGb287DQpkZWNsYXJlIGxldCB4OiB7DQogICAgYjogbnVtYmVyOw0KfTsNCi8vIyBzb3VyY2VNYXBwaW5nVVJMPWJ1bmRsZS5kLnRzLm1hcA==,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVuZGxlLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJ0ZXN0cy9jYXNlcy9jb21waWxlci9hLnRzIiwidGVzdHMvY2FzZXMvY29tcGlsZXIvaW5kZXgudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsY0FBTSxHQUFHO0lBQ0wsT0FBTyxDQUFDLEdBQUc7UUFBQyxDQUFDLEVBQUUsTUFBTSxDQUFBO0tBQUM7OztJQUd0QixNQUFNLENBQUMsSUFBSTtDQUdkO0FDUEQsUUFBQSxNQUFNLENBQUMsS0FBWSxDQUFDO0FBR3BCLFFBQUEsSUFBSSxDQUFDOztDQUFxQixDQUFDIn0=,Y2xhc3MgRm9vIHsKICAgIGRvVGhpbmcoeDoge2E6IG51bWJlcn0pIHsKICAgICAgICByZXR1cm4ge2I6IHguYX07CiAgICB9CiAgICBzdGF0aWMgbWFrZSgpIHsKICAgICAgICByZXR1cm4gbmV3IEZvbygpOwogICAgfQp9,Y29uc3QgYyA9IG5ldyBGb28oKTsKYy5kb1RoaW5nKHthOiA0Mn0pOwoKbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7Cg==
+{"version":3,"file":"bundle.d.ts","sourceRoot":"","sources":["a.ts","index.ts"],"names":[],"mappings":"AAAA,cAAM,GAAG;IACL,OAAO,CAAC,GAAG;QAAC,CAAC,EAAE,MAAM,CAAA;KAAC;;;IAGtB,MAAM,CAAC,IAAI;CAGd;ACPD,QAAA,MAAM,CAAC,KAAY,CAAC;AAGpB,QAAA,IAAI,CAAC;;CAAqB,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSBjbGFzcyBGb28gew0KICAgIGRvVGhpbmcoeDogew0KICAgICAgICBhOiBudW1iZXI7DQogICAgfSk6IHsNCiAgICAgICAgYjogbnVtYmVyOw0KICAgIH07DQogICAgc3RhdGljIG1ha2UoKTogRm9vOw0KfQ0KZGVjbGFyZSBjb25zdCBjOiBGb287DQpkZWNsYXJlIGxldCB4OiB7DQogICAgYjogbnVtYmVyOw0KfTsNCi8vIyBzb3VyY2VNYXBwaW5nVVJMPWJ1bmRsZS5kLnRzLm1hcA==,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVuZGxlLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJhLnRzIiwiaW5kZXgudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsY0FBTSxHQUFHO0lBQ0wsT0FBTyxDQUFDLEdBQUc7UUFBQyxDQUFDLEVBQUUsTUFBTSxDQUFBO0tBQUM7OztJQUd0QixNQUFNLENBQUMsSUFBSTtDQUdkO0FDUEQsUUFBQSxNQUFNLENBQUMsS0FBWSxDQUFDO0FBR3BCLFFBQUEsSUFBSSxDQUFDOztDQUFxQixDQUFDIn0=,Y2xhc3MgRm9vIHsKICAgIGRvVGhpbmcoeDoge2E6IG51bWJlcn0pIHsKICAgICAgICByZXR1cm4ge2I6IHguYX07CiAgICB9CiAgICBzdGF0aWMgbWFrZSgpIHsKICAgICAgICByZXR1cm4gbmV3IEZvbygpOwogICAgfQp9,Y29uc3QgYyA9IG5ldyBGb28oKTsKYy5kb1RoaW5nKHthOiA0Mn0pOwoKbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7Cg==
diff --git a/tests/baselines/reference/declarationMapsOutFile2.sourcemap.txt b/tests/baselines/reference/declarationMapsOutFile2.sourcemap.txt
index 20120d0568e..00afbcdac1c 100644
--- a/tests/baselines/reference/declarationMapsOutFile2.sourcemap.txt
+++ b/tests/baselines/reference/declarationMapsOutFile2.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: bundle.d.ts
 mapUrl: bundle.d.ts.map
 sourceRoot: 
-sources: tests/cases/compiler/a.ts,tests/cases/compiler/index.ts
+sources: a.ts,index.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:bundle.d.ts
-sourceFile:tests/cases/compiler/a.ts
+emittedFile:tests/cases/compiler/bundle.d.ts
+sourceFile:a.ts
 -------------------------------------------------------------------
 >>>declare class Foo {
 1 >
@@ -87,8 +87,8 @@ sourceFile:tests/cases/compiler/a.ts
 1 >Emitted(8, 2) Source(8, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:bundle.d.ts
-sourceFile:tests/cases/compiler/index.ts
+emittedFile:tests/cases/compiler/bundle.d.ts
+sourceFile:index.ts
 -------------------------------------------------------------------
 >>>declare const c: Foo;
 1->
diff --git a/tests/baselines/reference/declarationMapsWithSourceMap.js.map b/tests/baselines/reference/declarationMapsWithSourceMap.js.map
index f0aeaaf4976..c0ab9274002 100644
--- a/tests/baselines/reference/declarationMapsWithSourceMap.js.map
+++ b/tests/baselines/reference/declarationMapsWithSourceMap.js.map
@@ -1,7 +1,7 @@
 //// [bundle.js.map]
-{"version":3,"file":"bundle.js","sourceRoot":"","sources":["tests/cases/compiler/a.ts","tests/cases/compiler/index.ts"],"names":[],"mappings":"AAAA;IAAA;IAOA,CAAC;IANG,qBAAO,GAAP,UAAQ,CAAc;QAClB,OAAO,EAAC,CAAC,EAAE,CAAC,CAAC,CAAC,EAAC,CAAC;IACpB,CAAC;IACM,QAAI,GAAX;QACI,OAAO,IAAI,GAAG,EAAE,CAAC;IACrB,CAAC;IACL,UAAC;AAAD,CAAC,AAPD,IAOC;ACPD,IAAM,CAAC,GAAG,IAAI,GAAG,EAAE,CAAC;AACpB,CAAC,CAAC,OAAO,CAAC,EAAC,CAAC,EAAE,EAAE,EAAC,CAAC,CAAC;AAEnB,IAAI,CAAC,GAAG,CAAC,CAAC,OAAO,CAAC,EAAC,CAAC,EAAE,EAAE,EAAC,CAAC,CAAC"}
-//// https://sokra.github.io/source-map-visualization#base64,dmFyIEZvbyA9IC8qKiBAY2xhc3MgKi8gKGZ1bmN0aW9uICgpIHsNCiAgICBmdW5jdGlvbiBGb28oKSB7DQogICAgfQ0KICAgIEZvby5wcm90b3R5cGUuZG9UaGluZyA9IGZ1bmN0aW9uICh4KSB7DQogICAgICAgIHJldHVybiB7IGI6IHguYSB9Ow0KICAgIH07DQogICAgRm9vLm1ha2UgPSBmdW5jdGlvbiAoKSB7DQogICAgICAgIHJldHVybiBuZXcgRm9vKCk7DQogICAgfTsNCiAgICByZXR1cm4gRm9vOw0KfSgpKTsNCnZhciBjID0gbmV3IEZvbygpOw0KYy5kb1RoaW5nKHsgYTogNDIgfSk7DQp2YXIgeCA9IGMuZG9UaGluZyh7IGE6IDEyIH0pOw0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9YnVuZGxlLmpzLm1hcA==,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,Y2xhc3MgRm9vIHsKICAgIGRvVGhpbmcoeDoge2E6IG51bWJlcn0pIHsKICAgICAgICByZXR1cm4ge2I6IHguYX07CiAgICB9CiAgICBzdGF0aWMgbWFrZSgpIHsKICAgICAgICByZXR1cm4gbmV3IEZvbygpOwogICAgfQp9,Y29uc3QgYyA9IG5ldyBGb28oKTsKYy5kb1RoaW5nKHthOiA0Mn0pOwoKbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7Cg==
+{"version":3,"file":"bundle.js","sourceRoot":"","sources":["a.ts","index.ts"],"names":[],"mappings":"AAAA;IAAA;IAOA,CAAC;IANG,qBAAO,GAAP,UAAQ,CAAc;QAClB,OAAO,EAAC,CAAC,EAAE,CAAC,CAAC,CAAC,EAAC,CAAC;IACpB,CAAC;IACM,QAAI,GAAX;QACI,OAAO,IAAI,GAAG,EAAE,CAAC;IACrB,CAAC;IACL,UAAC;AAAD,CAAC,AAPD,IAOC;ACPD,IAAM,CAAC,GAAG,IAAI,GAAG,EAAE,CAAC;AACpB,CAAC,CAAC,OAAO,CAAC,EAAC,CAAC,EAAE,EAAE,EAAC,CAAC,CAAC;AAEnB,IAAI,CAAC,GAAG,CAAC,CAAC,OAAO,CAAC,EAAC,CAAC,EAAE,EAAE,EAAC,CAAC,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,dmFyIEZvbyA9IC8qKiBAY2xhc3MgKi8gKGZ1bmN0aW9uICgpIHsNCiAgICBmdW5jdGlvbiBGb28oKSB7DQogICAgfQ0KICAgIEZvby5wcm90b3R5cGUuZG9UaGluZyA9IGZ1bmN0aW9uICh4KSB7DQogICAgICAgIHJldHVybiB7IGI6IHguYSB9Ow0KICAgIH07DQogICAgRm9vLm1ha2UgPSBmdW5jdGlvbiAoKSB7DQogICAgICAgIHJldHVybiBuZXcgRm9vKCk7DQogICAgfTsNCiAgICByZXR1cm4gRm9vOw0KfSgpKTsNCnZhciBjID0gbmV3IEZvbygpOw0KYy5kb1RoaW5nKHsgYTogNDIgfSk7DQp2YXIgeCA9IGMuZG9UaGluZyh7IGE6IDEyIH0pOw0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9YnVuZGxlLmpzLm1hcA==,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,Y2xhc3MgRm9vIHsKICAgIGRvVGhpbmcoeDoge2E6IG51bWJlcn0pIHsKICAgICAgICByZXR1cm4ge2I6IHguYX07CiAgICB9CiAgICBzdGF0aWMgbWFrZSgpIHsKICAgICAgICByZXR1cm4gbmV3IEZvbygpOwogICAgfQp9,Y29uc3QgYyA9IG5ldyBGb28oKTsKYy5kb1RoaW5nKHthOiA0Mn0pOwoKbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7Cg==
 
 //// [bundle.d.ts.map]
-{"version":3,"file":"bundle.d.ts","sourceRoot":"","sources":["tests/cases/compiler/a.ts","tests/cases/compiler/index.ts"],"names":[],"mappings":"AAAA,cAAM,GAAG;IACL,OAAO,CAAC,GAAG;QAAC,CAAC,EAAE,MAAM,CAAA;KAAC;;;IAGtB,MAAM,CAAC,IAAI;CAGd;ACPD,QAAA,MAAM,CAAC,KAAY,CAAC;AAGpB,QAAA,IAAI,CAAC;;CAAqB,CAAC"}
-//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSBjbGFzcyBGb28gew0KICAgIGRvVGhpbmcoeDogew0KICAgICAgICBhOiBudW1iZXI7DQogICAgfSk6IHsNCiAgICAgICAgYjogbnVtYmVyOw0KICAgIH07DQogICAgc3RhdGljIG1ha2UoKTogRm9vOw0KfQ0KZGVjbGFyZSBjb25zdCBjOiBGb287DQpkZWNsYXJlIGxldCB4OiB7DQogICAgYjogbnVtYmVyOw0KfTsNCi8vIyBzb3VyY2VNYXBwaW5nVVJMPWJ1bmRsZS5kLnRzLm1hcA==,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVuZGxlLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJ0ZXN0cy9jYXNlcy9jb21waWxlci9hLnRzIiwidGVzdHMvY2FzZXMvY29tcGlsZXIvaW5kZXgudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsY0FBTSxHQUFHO0lBQ0wsT0FBTyxDQUFDLEdBQUc7UUFBQyxDQUFDLEVBQUUsTUFBTSxDQUFBO0tBQUM7OztJQUd0QixNQUFNLENBQUMsSUFBSTtDQUdkO0FDUEQsUUFBQSxNQUFNLENBQUMsS0FBWSxDQUFDO0FBR3BCLFFBQUEsSUFBSSxDQUFDOztDQUFxQixDQUFDIn0=,Y2xhc3MgRm9vIHsKICAgIGRvVGhpbmcoeDoge2E6IG51bWJlcn0pIHsKICAgICAgICByZXR1cm4ge2I6IHguYX07CiAgICB9CiAgICBzdGF0aWMgbWFrZSgpIHsKICAgICAgICByZXR1cm4gbmV3IEZvbygpOwogICAgfQp9,Y29uc3QgYyA9IG5ldyBGb28oKTsKYy5kb1RoaW5nKHthOiA0Mn0pOwoKbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7Cg==
+{"version":3,"file":"bundle.d.ts","sourceRoot":"","sources":["a.ts","index.ts"],"names":[],"mappings":"AAAA,cAAM,GAAG;IACL,OAAO,CAAC,GAAG;QAAC,CAAC,EAAE,MAAM,CAAA;KAAC;;;IAGtB,MAAM,CAAC,IAAI;CAGd;ACPD,QAAA,MAAM,CAAC,KAAY,CAAC;AAGpB,QAAA,IAAI,CAAC;;CAAqB,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,ZGVjbGFyZSBjbGFzcyBGb28gew0KICAgIGRvVGhpbmcoeDogew0KICAgICAgICBhOiBudW1iZXI7DQogICAgfSk6IHsNCiAgICAgICAgYjogbnVtYmVyOw0KICAgIH07DQogICAgc3RhdGljIG1ha2UoKTogRm9vOw0KfQ0KZGVjbGFyZSBjb25zdCBjOiBGb287DQpkZWNsYXJlIGxldCB4OiB7DQogICAgYjogbnVtYmVyOw0KfTsNCi8vIyBzb3VyY2VNYXBwaW5nVVJMPWJ1bmRsZS5kLnRzLm1hcA==,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYnVuZGxlLmQudHMiLCJzb3VyY2VSb290IjoiIiwic291cmNlcyI6WyJhLnRzIiwiaW5kZXgudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6IkFBQUEsY0FBTSxHQUFHO0lBQ0wsT0FBTyxDQUFDLEdBQUc7UUFBQyxDQUFDLEVBQUUsTUFBTSxDQUFBO0tBQUM7OztJQUd0QixNQUFNLENBQUMsSUFBSTtDQUdkO0FDUEQsUUFBQSxNQUFNLENBQUMsS0FBWSxDQUFDO0FBR3BCLFFBQUEsSUFBSSxDQUFDOztDQUFxQixDQUFDIn0=,Y2xhc3MgRm9vIHsKICAgIGRvVGhpbmcoeDoge2E6IG51bWJlcn0pIHsKICAgICAgICByZXR1cm4ge2I6IHguYX07CiAgICB9CiAgICBzdGF0aWMgbWFrZSgpIHsKICAgICAgICByZXR1cm4gbmV3IEZvbygpOwogICAgfQp9,Y29uc3QgYyA9IG5ldyBGb28oKTsKYy5kb1RoaW5nKHthOiA0Mn0pOwoKbGV0IHggPSBjLmRvVGhpbmcoe2E6IDEyfSk7Cg==
diff --git a/tests/baselines/reference/declarationMapsWithSourceMap.sourcemap.txt b/tests/baselines/reference/declarationMapsWithSourceMap.sourcemap.txt
index 4f343b2142e..d97ef4c5890 100644
--- a/tests/baselines/reference/declarationMapsWithSourceMap.sourcemap.txt
+++ b/tests/baselines/reference/declarationMapsWithSourceMap.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: bundle.js
 mapUrl: bundle.js.map
 sourceRoot: 
-sources: tests/cases/compiler/a.ts,tests/cases/compiler/index.ts
+sources: a.ts,index.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:bundle.js
-sourceFile:tests/cases/compiler/a.ts
+emittedFile:tests/cases/compiler/bundle.js
+sourceFile:a.ts
 -------------------------------------------------------------------
 >>>var Foo = /** @class */ (function () {
 1 >
@@ -172,8 +172,8 @@ sourceFile:tests/cases/compiler/a.ts
 4 >Emitted(11, 6) Source(8, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:bundle.js
-sourceFile:tests/cases/compiler/index.ts
+emittedFile:tests/cases/compiler/bundle.js
+sourceFile:index.ts
 -------------------------------------------------------------------
 >>>var c = new Foo();
 1->
@@ -296,11 +296,11 @@ sourceFile:tests/cases/compiler/index.ts
 JsFile: bundle.d.ts
 mapUrl: bundle.d.ts.map
 sourceRoot: 
-sources: tests/cases/compiler/a.ts,tests/cases/compiler/index.ts
+sources: a.ts,index.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:bundle.d.ts
-sourceFile:tests/cases/compiler/a.ts
+emittedFile:tests/cases/compiler/bundle.d.ts
+sourceFile:a.ts
 -------------------------------------------------------------------
 >>>declare class Foo {
 1 >
@@ -381,8 +381,8 @@ sourceFile:tests/cases/compiler/a.ts
 1 >Emitted(8, 2) Source(8, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:bundle.d.ts
-sourceFile:tests/cases/compiler/index.ts
+emittedFile:tests/cases/compiler/bundle.d.ts
+sourceFile:index.ts
 -------------------------------------------------------------------
 >>>declare const c: Foo;
 1->
diff --git a/tests/baselines/reference/jsDeclarationsJSDocRedirectedLookups.js b/tests/baselines/reference/jsDeclarationsJSDocRedirectedLookups.js
index 019dd3663ed..f9046fe99fd 100644
--- a/tests/baselines/reference/jsDeclarationsJSDocRedirectedLookups.js
+++ b/tests/baselines/reference/jsDeclarationsJSDocRedirectedLookups.js
@@ -85,14 +85,14 @@
 //// [DtsFileErrors]
 
 
-out/index.d.ts(14,39): error TS2304: Cannot find name 'class'.
-out/index.d.ts(15,38): error TS2304: Cannot find name 'bool'.
-out/index.d.ts(16,37): error TS2304: Cannot find name 'int'.
-out/index.d.ts(17,39): error TS2552: Cannot find name 'float'. Did you mean 'GLfloat'?
-out/index.d.ts(18,41): error TS2304: Cannot find name 'integer'.
+tests/cases/conformance/jsdoc/declarations/out/index.d.ts(14,39): error TS2304: Cannot find name 'class'.
+tests/cases/conformance/jsdoc/declarations/out/index.d.ts(15,38): error TS2304: Cannot find name 'bool'.
+tests/cases/conformance/jsdoc/declarations/out/index.d.ts(16,37): error TS2304: Cannot find name 'int'.
+tests/cases/conformance/jsdoc/declarations/out/index.d.ts(17,39): error TS2552: Cannot find name 'float'. Did you mean 'GLfloat'?
+tests/cases/conformance/jsdoc/declarations/out/index.d.ts(18,41): error TS2304: Cannot find name 'integer'.
 
 
-==== ./out/index.d.ts (5 errors) ====
+==== tests/cases/conformance/jsdoc/declarations/out/index.d.ts (5 errors) ====
     /** @type {String} */ declare const a: string;
     /** @type {Number} */ declare const b: number;
     /** @type {Boolean} */ declare const c: boolean;
diff --git a/tests/baselines/reference/jsDeclarationsNonIdentifierInferredNames.js b/tests/baselines/reference/jsDeclarationsNonIdentifierInferredNames.js
index b722b8872ca..5fcc5dd0685 100644
--- a/tests/baselines/reference/jsDeclarationsNonIdentifierInferredNames.js
+++ b/tests/baselines/reference/jsDeclarationsNonIdentifierInferredNames.js
@@ -25,10 +25,10 @@ export {};
 //// [DtsFileErrors]
 
 
-out/jsDeclarationsNonIdentifierInferredNames.d.ts(4,5): error TS2503: Cannot find namespace 'JSX'.
+tests/cases/conformance/jsdoc/declarations/out/jsDeclarationsNonIdentifierInferredNames.d.ts(4,5): error TS2503: Cannot find namespace 'JSX'.
 
 
-==== ./out/jsDeclarationsNonIdentifierInferredNames.d.ts (1 errors) ====
+==== tests/cases/conformance/jsdoc/declarations/out/jsDeclarationsNonIdentifierInferredNames.d.ts (1 errors) ====
     export function ExampleFunctionalComponent({ "data-testid": dataTestId, [dynPropName]: dynProp }: {
         "data-testid": any;
         "data-dyn": any;
diff --git a/tests/baselines/reference/jsDeclarationsReactComponents.js b/tests/baselines/reference/jsDeclarationsReactComponents.js
index d0c4a241528..01412b51b79 100644
--- a/tests/baselines/reference/jsDeclarationsReactComponents.js
+++ b/tests/baselines/reference/jsDeclarationsReactComponents.js
@@ -185,7 +185,7 @@ exports.default = Tree;
 
 
 //// [jsDeclarationsReactComponents1.d.ts]
-/// <reference path="../..react16.d.ts" />
+/// <reference path="../../../../../../..react16.d.ts" />
 export default TabbedShowLayout;
 declare function TabbedShowLayout({}: {}): JSX.Element;
 declare namespace TabbedShowLayout {
@@ -198,7 +198,7 @@ declare namespace TabbedShowLayout {
 }
 import PropTypes from "prop-types";
 //// [jsDeclarationsReactComponents2.d.ts]
-/// <reference path="../..react16.d.ts" />
+/// <reference path="../../../../../../..react16.d.ts" />
 export default TabbedShowLayout;
 /**
  * @type {React.SFC}
@@ -228,7 +228,7 @@ declare namespace TabbedShowLayout {
     }
 }
 //// [jsDeclarationsReactComponents5.d.ts]
-/// <reference path="../..react16.d.ts" />
+/// <reference path="../../../../../../..react16.d.ts" />
 export default Tree;
 declare function Tree({ allowDropOnRoot }: {
     allowDropOnRoot: any;
diff --git a/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.js.map b/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.js.map
index c4a4eda35e2..2291166790d 100644
--- a/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.js.map
+++ b/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.js.map
@@ -1,2 +1,2 @@
 //// [a.js.map]
-{"version":3,"file":"a.js","sourceRoot":"","sources":["../tests/cases/compiler/a.ts"],"names":[],"mappings":"AAAA;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC"}
\ No newline at end of file
+{"version":3,"file":"a.js","sourceRoot":"","sources":["../a.ts"],"names":[],"mappings":"AAAA;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC"}
\ No newline at end of file
diff --git a/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.sourcemap.txt b/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.sourcemap.txt
index fcc7e0b1fda..d20907f8937 100644
--- a/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.sourcemap.txt
+++ b/tests/baselines/reference/jsFileCompilationWithMapFileAsJsWithOutDir.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: a.js
 mapUrl: a.js.map
 sourceRoot: 
-sources: ../tests/cases/compiler/a.ts
+sources: ../a.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:out/a.js
-sourceFile:../tests/cases/compiler/a.ts
+emittedFile:tests/cases/compiler/out/a.js
+sourceFile:../a.ts
 -------------------------------------------------------------------
 >>>var c = /** @class */ (function () {
 1 >
diff --git a/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.errors.txt b/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.errors.txt
index 0414a8f4cd7..700bc55a920 100644
--- a/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.errors.txt
+++ b/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.errors.txt
@@ -1,11 +1,7 @@
-error TS5055: Cannot write file 'tests/cases/compiler/b.d.ts' because it would overwrite input file.
-  Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 error TS5101: Option 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify compilerOption '"ignoreDeprecations": "5.0"' to silence this error.
   Use 'outFile' instead.
 
 
-!!! error TS5055: Cannot write file 'tests/cases/compiler/b.d.ts' because it would overwrite input file.
-!!! error TS5055:   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 !!! error TS5101: Option 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify compilerOption '"ignoreDeprecations": "5.0"' to silence this error.
 !!! error TS5101:   Use 'outFile' instead.
 ==== tests/cases/compiler/a.ts (0 errors) ====
diff --git a/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.js b/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.js
index d87924e68ad..34cf44b63cf 100644
--- a/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.js
+++ b/tests/baselines/reference/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.js
@@ -14,3 +14,8 @@ var c = /** @class */ (function () {
     }
     return c;
 }());
+
+
+//// [b.d.ts]
+declare class c {
+}
diff --git a/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.errors.txt b/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.errors.txt
index 9ac70b004d4..b5d417a3f51 100644
--- a/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.errors.txt
+++ b/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.errors.txt
@@ -1,18 +1,18 @@
-error TS5055: Cannot write file 'tests/cases/compiler/b.js' because it would overwrite input file.
+error TS5055: Cannot write file '/b.js' because it would overwrite input file.
   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 error TS5101: Option 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify compilerOption '"ignoreDeprecations": "5.0"' to silence this error.
   Use 'outFile' instead.
 
 
-!!! error TS5055: Cannot write file 'tests/cases/compiler/b.js' because it would overwrite input file.
+!!! error TS5055: Cannot write file '/b.js' because it would overwrite input file.
 !!! error TS5055:   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 !!! error TS5101: Option 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify compilerOption '"ignoreDeprecations": "5.0"' to silence this error.
 !!! error TS5101:   Use 'outFile' instead.
-==== tests/cases/compiler/a.ts (0 errors) ====
+==== /a.ts (0 errors) ====
     class c {
     }
     
-==== tests/cases/compiler/b.js (0 errors) ====
+==== /b.js (0 errors) ====
     function foo() {
     }
     
\ No newline at end of file
diff --git a/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.symbols b/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.symbols
index 5260b8d6cf3..a5c2e6456ab 100644
--- a/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.symbols
+++ b/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.symbols
@@ -1,9 +1,9 @@
-=== tests/cases/compiler/a.ts ===
+=== /a.ts ===
 class c {
 >c : Symbol(c, Decl(a.ts, 0, 0))
 }
 
-=== tests/cases/compiler/b.js ===
+=== /b.js ===
 function foo() {
 >foo : Symbol(foo, Decl(b.js, 0, 0))
 }
diff --git a/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.types b/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.types
index dce83eeb8eb..bf2379d24bc 100644
--- a/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.types
+++ b/tests/baselines/reference/jsFileCompilationWithOutFileNameSameAsInputJsFile.types
@@ -1,9 +1,9 @@
-=== tests/cases/compiler/a.ts ===
+=== /a.ts ===
 class c {
 >c : c
 }
 
-=== tests/cases/compiler/b.js ===
+=== /b.js ===
 function foo() {
 >foo : () => void
 }
diff --git a/tests/baselines/reference/library-reference-1.trace.json b/tests/baselines/reference/library-reference-1.trace.json
index 173d0c128fb..80f8b8e4ab2 100644
--- a/tests/baselines/reference/library-reference-1.trace.json
+++ b/tests/baselines/reference/library-reference-1.trace.json
@@ -1,90 +1,94 @@
 [
-    "======== Resolving type reference directive 'jquery', containing file '/src/consumer.ts', root directory 'types'. ========",
-    "Resolving with primary search path 'types'.",
-    "File 'types/jquery.d.ts' does not exist.",
-    "File 'types/jquery/package.json' does not exist.",
-    "File 'types/jquery/index.d.ts' exists - use it as a name resolution result.",
-    "Resolving real path for 'types/jquery/index.d.ts', result '/src/types/jquery/index.d.ts'.",
+    "======== Resolving type reference directive 'jquery', containing file '/src/consumer.ts', root directory '/src/types'. ========",
+    "Resolving with primary search path '/src/types'.",
+    "File '/src/types/jquery.d.ts' does not exist.",
+    "File '/src/types/jquery/package.json' does not exist.",
+    "File '/src/types/jquery/index.d.ts' exists - use it as a name resolution result.",
+    "Resolving real path for '/src/types/jquery/index.d.ts', result '/src/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/src/types/jquery/index.d.ts', primary: true. ========",
-    "======== Resolving type reference directive 'jquery', containing file '/src/__inferred type names__.ts'. ========",
-    "Resolution for type reference directive 'jquery' was found in cache from location '/src'.",
+    "======== Resolving type reference directive 'jquery', containing file '/.src/__inferred type names__.ts', root directory '/src/types'. ========",
+    "Resolving with primary search path '/src/types'.",
+    "File '/src/types/jquery.d.ts' does not exist.",
+    "File '/src/types/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/types/jquery/index.d.ts' exists - use it as a name resolution result.",
+    "Resolving real path for '/src/types/jquery/index.d.ts', result '/src/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/src/types/jquery/index.d.ts', primary: true. ========",
-    "======== Resolving module '@typescript/lib-es5' from '/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-es5'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-es5'",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-decorators' from '/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators'",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-decorators/legacy' from '/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators/legacy'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators/legacy'",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-dom' from '/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom'",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-webworker/importscripts' from '/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-webworker/importscripts'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-webworker/importscripts'",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-scripthost' from '/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-10.trace.json b/tests/baselines/reference/library-reference-10.trace.json
index 605574ba9fb..937099add14 100644
--- a/tests/baselines/reference/library-reference-10.trace.json
+++ b/tests/baselines/reference/library-reference-10.trace.json
@@ -1,92 +1,97 @@
 [
-    "======== Resolving type reference directive 'jquery', containing file '/foo/consumer.ts', root directory './types'. ========",
-    "Resolving with primary search path './types'.",
-    "File './types/jquery.d.ts' does not exist.",
-    "Found 'package.json' at './types/jquery/package.json'.",
+    "======== Resolving type reference directive 'jquery', containing file '/foo/consumer.ts', root directory '/foo/types'. ========",
+    "Resolving with primary search path '/foo/types'.",
+    "File '/foo/types/jquery.d.ts' does not exist.",
+    "Found 'package.json' at '/foo/types/jquery/package.json'.",
     "'package.json' does not have a 'typesVersions' field.",
-    "'package.json' has 'typings' field 'jquery.d.ts' that references 'types/jquery/jquery.d.ts'.",
-    "File 'types/jquery/jquery.d.ts' exists - use it as a name resolution result.",
-    "Resolving real path for 'types/jquery/jquery.d.ts', result '/foo/types/jquery/jquery.d.ts'.",
+    "'package.json' has 'typings' field 'jquery.d.ts' that references '/foo/types/jquery/jquery.d.ts'.",
+    "File '/foo/types/jquery/jquery.d.ts' exists - use it as a name resolution result.",
+    "Resolving real path for '/foo/types/jquery/jquery.d.ts', result '/foo/types/jquery/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/foo/types/jquery/jquery.d.ts', primary: true. ========",
-    "======== Resolving type reference directive 'jquery', containing file '/foo/__inferred type names__.ts'. ========",
-    "Resolution for type reference directive 'jquery' was found in cache from location '/foo'.",
+    "======== Resolving type reference directive 'jquery', containing file '/.src/__inferred type names__.ts', root directory '/foo/types'. ========",
+    "Resolving with primary search path '/foo/types'.",
+    "File '/foo/types/jquery.d.ts' does not exist.",
+    "File '/foo/types/jquery/package.json' exists according to earlier cached lookups.",
+    "'package.json' has 'typings' field 'jquery.d.ts' that references '/foo/types/jquery/jquery.d.ts'.",
+    "File '/foo/types/jquery/jquery.d.ts' exists - use it as a name resolution result.",
+    "Resolving real path for '/foo/types/jquery/jquery.d.ts', result '/foo/types/jquery/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/foo/types/jquery/jquery.d.ts', primary: true. ========",
-    "======== Resolving module '@typescript/lib-es5' from '/foo/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-es5'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-es5'",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-decorators' from '/foo/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators'",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-decorators/legacy' from '/foo/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators/legacy'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators/legacy'",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-dom' from '/foo/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom'",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-webworker/importscripts' from '/foo/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-webworker/importscripts'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-webworker/importscripts'",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-scripthost' from '/foo/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/foo/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-15.trace.json b/tests/baselines/reference/library-reference-15.trace.json
index 9c68e594ceb..81e40d2da59 100644
--- a/tests/baselines/reference/library-reference-15.trace.json
+++ b/tests/baselines/reference/library-reference-15.trace.json
@@ -1,87 +1,87 @@
 [
-    "======== Resolving type reference directive 'jquery', containing file '/a/__inferred type names__.ts', root directory 'types'. ========",
-    "Resolving with primary search path 'types'.",
-    "File 'types/jquery.d.ts' does not exist.",
-    "File 'types/jquery/package.json' does not exist.",
-    "File 'types/jquery/index.d.ts' exists - use it as a name resolution result.",
-    "Resolving real path for 'types/jquery/index.d.ts', result '/a/types/jquery/index.d.ts'.",
+    "======== Resolving type reference directive 'jquery', containing file '/.src/__inferred type names__.ts', root directory '/a/types'. ========",
+    "Resolving with primary search path '/a/types'.",
+    "File '/a/types/jquery.d.ts' does not exist.",
+    "File '/a/types/jquery/package.json' does not exist.",
+    "File '/a/types/jquery/index.d.ts' exists - use it as a name resolution result.",
+    "Resolving real path for '/a/types/jquery/index.d.ts', result '/a/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/a/types/jquery/index.d.ts', primary: true. ========",
-    "======== Resolving module '@typescript/lib-es5' from '/a/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-es5'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-es5'",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-decorators' from '/a/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators'",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-decorators/legacy' from '/a/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators/legacy'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-decorators/legacy'",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-dom' from '/a/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom'",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-webworker/importscripts' from '/a/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-webworker/importscripts'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-webworker/importscripts'",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
-    "======== Resolving module '@typescript/lib-scripthost' from '/a/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
+    "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
+    "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-5.trace.json b/tests/baselines/reference/library-reference-5.trace.json
index 9f234c41826..a56af58d6f0 100644
--- a/tests/baselines/reference/library-reference-5.trace.json
+++ b/tests/baselines/reference/library-reference-5.trace.json
@@ -1,7 +1,7 @@
 [
-    "======== Resolving type reference directive 'foo', containing file '/src/root.ts', root directory 'types'. ========",
-    "Resolving with primary search path 'types'.",
-    "Directory 'types' does not exist, skipping all lookups in it.",
+    "======== Resolving type reference directive 'foo', containing file '/src/root.ts', root directory '/tests/cases/conformance/references/types'. ========",
+    "Resolving with primary search path '/tests/cases/conformance/references/types'.",
+    "Directory '/tests/cases/conformance/references/types' does not exist, skipping all lookups in it.",
     "Looking up in 'node_modules' folder, initial location '/src'.",
     "Searching all ancestor node_modules directories for preferred extensions: Declaration.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
@@ -10,9 +10,9 @@
     "File '/node_modules/foo/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/foo/index.d.ts', result '/node_modules/foo/index.d.ts'.",
     "======== Type reference directive 'foo' was successfully resolved to '/node_modules/foo/index.d.ts', primary: false. ========",
-    "======== Resolving type reference directive 'bar', containing file '/src/root.ts', root directory 'types'. ========",
-    "Resolving with primary search path 'types'.",
-    "Directory 'types' does not exist, skipping all lookups in it.",
+    "======== Resolving type reference directive 'bar', containing file '/src/root.ts', root directory '/tests/cases/conformance/references/types'. ========",
+    "Resolving with primary search path '/tests/cases/conformance/references/types'.",
+    "Directory '/tests/cases/conformance/references/types' does not exist, skipping all lookups in it.",
     "Looking up in 'node_modules' folder, initial location '/src'.",
     "Searching all ancestor node_modules directories for preferred extensions: Declaration.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
@@ -21,9 +21,9 @@
     "File '/node_modules/bar/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/bar/index.d.ts', result '/node_modules/bar/index.d.ts'.",
     "======== Type reference directive 'bar' was successfully resolved to '/node_modules/bar/index.d.ts', primary: false. ========",
-    "======== Resolving type reference directive 'alpha', containing file '/node_modules/foo/index.d.ts', root directory 'types'. ========",
-    "Resolving with primary search path 'types'.",
-    "Directory 'types' does not exist, skipping all lookups in it.",
+    "======== Resolving type reference directive 'alpha', containing file '/node_modules/foo/index.d.ts', root directory '/tests/cases/conformance/references/types'. ========",
+    "Resolving with primary search path '/tests/cases/conformance/references/types'.",
+    "Directory '/tests/cases/conformance/references/types' does not exist, skipping all lookups in it.",
     "Looking up in 'node_modules' folder, initial location '/node_modules/foo'.",
     "Searching all ancestor node_modules directories for preferred extensions: Declaration.",
     "File '/node_modules/foo/node_modules/alpha/package.json' does not exist.",
@@ -31,9 +31,9 @@
     "File '/node_modules/foo/node_modules/alpha/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/foo/node_modules/alpha/index.d.ts', result '/node_modules/foo/node_modules/alpha/index.d.ts'.",
     "======== Type reference directive 'alpha' was successfully resolved to '/node_modules/foo/node_modules/alpha/index.d.ts', primary: false. ========",
-    "======== Resolving type reference directive 'alpha', containing file '/node_modules/bar/index.d.ts', root directory 'types'. ========",
-    "Resolving with primary search path 'types'.",
-    "Directory 'types' does not exist, skipping all lookups in it.",
+    "======== Resolving type reference directive 'alpha', containing file '/node_modules/bar/index.d.ts', root directory '/tests/cases/conformance/references/types'. ========",
+    "Resolving with primary search path '/tests/cases/conformance/references/types'.",
+    "Directory '/tests/cases/conformance/references/types' does not exist, skipping all lookups in it.",
     "Looking up in 'node_modules' folder, initial location '/node_modules/bar'.",
     "Searching all ancestor node_modules directories for preferred extensions: Declaration.",
     "File '/node_modules/bar/node_modules/alpha/package.json' does not exist.",
diff --git a/tests/baselines/reference/library-reference-scoped-packages.trace.json b/tests/baselines/reference/library-reference-scoped-packages.trace.json
index 008e86ea994..bedfa918d58 100644
--- a/tests/baselines/reference/library-reference-scoped-packages.trace.json
+++ b/tests/baselines/reference/library-reference-scoped-packages.trace.json
@@ -1,7 +1,7 @@
 [
-    "======== Resolving type reference directive '@beep/boop', containing file '/a.ts', root directory 'types'. ========",
-    "Resolving with primary search path 'types'.",
-    "Directory 'types' does not exist, skipping all lookups in it.",
+    "======== Resolving type reference directive '@beep/boop', containing file '/a.ts', root directory '/.src/tests/cases/conformance/references/types'. ========",
+    "Resolving with primary search path '/.src/tests/cases/conformance/references/types'.",
+    "Directory '/.src/tests/cases/conformance/references/types' does not exist, skipping all lookups in it.",
     "Looking up in 'node_modules' folder, initial location '/'.",
     "Searching all ancestor node_modules directories for preferred extensions: Declaration.",
     "Scoped package detected, looking in 'beep__boop'",
diff --git a/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=node16).js b/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=node16).js
index 1763a30bdf1..8488fb2e916 100644
--- a/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=node16).js
+++ b/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=node16).js
@@ -58,11 +58,11 @@ export { fs2 };
 
 
 //// [index.d.ts]
-/// <reference path="../../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../../types.d.ts" />
 import fs2 = require("fs");
 //// [index.d.ts]
-/// <reference path="../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../types.d.ts" />
 import fs2 = require("fs");
 //// [file.d.ts]
-/// <reference path="../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../types.d.ts" />
 import fs2 = require("fs");
diff --git a/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=nodenext).js b/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=nodenext).js
index 1763a30bdf1..8488fb2e916 100644
--- a/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=nodenext).js
+++ b/tests/baselines/reference/nodeModulesAllowJsImportAssignment(module=nodenext).js
@@ -58,11 +58,11 @@ export { fs2 };
 
 
 //// [index.d.ts]
-/// <reference path="../../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../../types.d.ts" />
 import fs2 = require("fs");
 //// [index.d.ts]
-/// <reference path="../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../types.d.ts" />
 import fs2 = require("fs");
 //// [file.d.ts]
-/// <reference path="../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../types.d.ts" />
 import fs2 = require("fs");
diff --git a/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=node16).js b/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=node16).js
index 527c2cc583a..7c584a82861 100644
--- a/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=node16).js
+++ b/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=node16).js
@@ -43,6 +43,6 @@ export * as fs from "fs";
 export * from "fs";
 export * as fs from "fs";
 //// [index.d.ts]
-/// <reference path="../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../types.d.ts" />
 export * from "fs";
 export * as fs from "fs";
diff --git a/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=nodenext).js b/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=nodenext).js
index 527c2cc583a..7c584a82861 100644
--- a/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=nodenext).js
+++ b/tests/baselines/reference/nodeModulesAllowJsImportHelpersCollisions2(module=nodenext).js
@@ -43,6 +43,6 @@ export * as fs from "fs";
 export * from "fs";
 export * as fs from "fs";
 //// [index.d.ts]
-/// <reference path="../tests/cases/conformance/node/allowJs/types.d.ts" />
+/// <reference path="../types.d.ts" />
 export * from "fs";
 export * as fs from "fs";
diff --git a/tests/baselines/reference/out-flag2.js.map b/tests/baselines/reference/out-flag2.js.map
index 090a43a6933..d984f1d5fbe 100644
--- a/tests/baselines/reference/out-flag2.js.map
+++ b/tests/baselines/reference/out-flag2.js.map
@@ -1,3 +1,3 @@
 //// [c.js.map]
-{"version":3,"file":"c.js","sourceRoot":"","sources":["tests/cases/compiler/a.ts","tests/cases/compiler/b.ts"],"names":[],"mappings":"AAAA;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW;ACAX;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW"}
-//// https://sokra.github.io/source-map-visualization#base64,dmFyIEEgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQSgpIHsNCiAgICB9DQogICAgcmV0dXJuIEE7DQp9KCkpOw0KdmFyIEIgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQigpIHsNCiAgICB9DQogICAgcmV0dXJuIEI7DQp9KCkpOw0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9Yy5qcy5tYXA=,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYy5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbInRlc3RzL2Nhc2VzL2NvbXBpbGVyL2EudHMiLCJ0ZXN0cy9jYXNlcy9jb21waWxlci9iLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiJBQUFBO0lBQUE7SUFBVSxDQUFDO0lBQUQsUUFBQztBQUFELENBQUMsQUFBWCxJQUFXO0FDQVg7SUFBQTtJQUFVLENBQUM7SUFBRCxRQUFDO0FBQUQsQ0FBQyxBQUFYLElBQVcifQ==,Y2xhc3MgQSB7IH0K,Y2xhc3MgQiB7IH0K
+{"version":3,"file":"c.js","sourceRoot":"","sources":["a.ts","b.ts"],"names":[],"mappings":"AAAA;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW;ACAX;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW"}
+//// https://sokra.github.io/source-map-visualization#base64,dmFyIEEgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQSgpIHsNCiAgICB9DQogICAgcmV0dXJuIEE7DQp9KCkpOw0KdmFyIEIgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQigpIHsNCiAgICB9DQogICAgcmV0dXJuIEI7DQp9KCkpOw0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9Yy5qcy5tYXA=,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYy5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbImEudHMiLCJiLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiJBQUFBO0lBQUE7SUFBVSxDQUFDO0lBQUQsUUFBQztBQUFELENBQUMsQUFBWCxJQUFXO0FDQVg7SUFBQTtJQUFVLENBQUM7SUFBRCxRQUFDO0FBQUQsQ0FBQyxBQUFYLElBQVcifQ==,Y2xhc3MgQSB7IH0K,Y2xhc3MgQiB7IH0K
diff --git a/tests/baselines/reference/out-flag2.sourcemap.txt b/tests/baselines/reference/out-flag2.sourcemap.txt
index 47a05ee3976..533f7629646 100644
--- a/tests/baselines/reference/out-flag2.sourcemap.txt
+++ b/tests/baselines/reference/out-flag2.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: c.js
 mapUrl: c.js.map
 sourceRoot: 
-sources: tests/cases/compiler/a.ts,tests/cases/compiler/b.ts
+sources: a.ts,b.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:c.js
-sourceFile:tests/cases/compiler/a.ts
+emittedFile:tests/cases/compiler/c.js
+sourceFile:a.ts
 -------------------------------------------------------------------
 >>>var A = /** @class */ (function () {
 1 >
@@ -53,8 +53,8 @@ sourceFile:tests/cases/compiler/a.ts
 4 >Emitted(5, 6) Source(1, 12) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:c.js
-sourceFile:tests/cases/compiler/b.ts
+emittedFile:tests/cases/compiler/c.js
+sourceFile:b.ts
 -------------------------------------------------------------------
 >>>var B = /** @class */ (function () {
 1->
diff --git a/tests/baselines/reference/out-flag3.js.map b/tests/baselines/reference/out-flag3.js.map
index 3f4ef4645bb..dc7e430263f 100644
--- a/tests/baselines/reference/out-flag3.js.map
+++ b/tests/baselines/reference/out-flag3.js.map
@@ -1,3 +1,3 @@
 //// [c.js.map]
-{"version":3,"file":"c.js","sourceRoot":"","sources":["tests/cases/compiler/a.ts","tests/cases/compiler/b.ts"],"names":[],"mappings":"AAAA,4BAA4B;AAE5B;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW;ACFX;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW"}
-//// https://sokra.github.io/source-map-visualization#base64,Ly8gLS1vdXQgYW5kIC0tb3V0RmlsZSBlcnJvcg0KdmFyIEEgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQSgpIHsNCiAgICB9DQogICAgcmV0dXJuIEE7DQp9KCkpOw0KdmFyIEIgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQigpIHsNCiAgICB9DQogICAgcmV0dXJuIEI7DQp9KCkpOw0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9Yy5qcy5tYXA=,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYy5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbInRlc3RzL2Nhc2VzL2NvbXBpbGVyL2EudHMiLCJ0ZXN0cy9jYXNlcy9jb21waWxlci9iLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiJBQUFBLDRCQUE0QjtBQUU1QjtJQUFBO0lBQVUsQ0FBQztJQUFELFFBQUM7QUFBRCxDQUFDLEFBQVgsSUFBVztBQ0ZYO0lBQUE7SUFBVSxDQUFDO0lBQUQsUUFBQztBQUFELENBQUMsQUFBWCxJQUFXIn0=,Ly8gLS1vdXQgYW5kIC0tb3V0RmlsZSBlcnJvcgoKY2xhc3MgQSB7IH0K,Y2xhc3MgQiB7IH0K
+{"version":3,"file":"c.js","sourceRoot":"","sources":["a.ts","b.ts"],"names":[],"mappings":"AAAA,4BAA4B;AAE5B;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW;ACFX;IAAA;IAAU,CAAC;IAAD,QAAC;AAAD,CAAC,AAAX,IAAW"}
+//// https://sokra.github.io/source-map-visualization#base64,Ly8gLS1vdXQgYW5kIC0tb3V0RmlsZSBlcnJvcg0KdmFyIEEgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQSgpIHsNCiAgICB9DQogICAgcmV0dXJuIEE7DQp9KCkpOw0KdmFyIEIgPSAvKiogQGNsYXNzICovIChmdW5jdGlvbiAoKSB7DQogICAgZnVuY3Rpb24gQigpIHsNCiAgICB9DQogICAgcmV0dXJuIEI7DQp9KCkpOw0KLy8jIHNvdXJjZU1hcHBpbmdVUkw9Yy5qcy5tYXA=,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYy5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbImEudHMiLCJiLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiJBQUFBLDRCQUE0QjtBQUU1QjtJQUFBO0lBQVUsQ0FBQztJQUFELFFBQUM7QUFBRCxDQUFDLEFBQVgsSUFBVztBQ0ZYO0lBQUE7SUFBVSxDQUFDO0lBQUQsUUFBQztBQUFELENBQUMsQUFBWCxJQUFXIn0=,Ly8gLS1vdXQgYW5kIC0tb3V0RmlsZSBlcnJvcgoKY2xhc3MgQSB7IH0K,Y2xhc3MgQiB7IH0K
diff --git a/tests/baselines/reference/out-flag3.sourcemap.txt b/tests/baselines/reference/out-flag3.sourcemap.txt
index c6530af2573..0bd3a39eb36 100644
--- a/tests/baselines/reference/out-flag3.sourcemap.txt
+++ b/tests/baselines/reference/out-flag3.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: c.js
 mapUrl: c.js.map
 sourceRoot: 
-sources: tests/cases/compiler/a.ts,tests/cases/compiler/b.ts
+sources: a.ts,b.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:c.js
-sourceFile:tests/cases/compiler/a.ts
+emittedFile:tests/cases/compiler/c.js
+sourceFile:a.ts
 -------------------------------------------------------------------
 >>>// --out and --outFile error
 1 >
@@ -64,8 +64,8 @@ sourceFile:tests/cases/compiler/a.ts
 4 >Emitted(6, 6) Source(3, 12) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:c.js
-sourceFile:tests/cases/compiler/b.ts
+emittedFile:tests/cases/compiler/c.js
+sourceFile:b.ts
 -------------------------------------------------------------------
 >>>var B = /** @class */ (function () {
 1->
diff --git a/tests/baselines/reference/outModuleConcatAmd.js.map b/tests/baselines/reference/outModuleConcatAmd.js.map
index 0d44d7846ad..906fd71ff79 100644
--- a/tests/baselines/reference/outModuleConcatAmd.js.map
+++ b/tests/baselines/reference/outModuleConcatAmd.js.map
@@ -1,3 +1,3 @@
 //// [all.js.map]
-{"version":3,"file":"all.js","sourceRoot":"","sources":["tests/cases/compiler/ref/a.ts","tests/cases/compiler/b.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;IAAA;QAAA;QAAiB,CAAC;QAAD,QAAC;IAAD,CAAC,AAAlB,IAAkB;IAAL,cAAC;;;;;;ICCd;QAAuB,qBAAC;QAAxB;;QAA2B,CAAC;QAAD,QAAC;IAAD,CAAC,AAA5B,CAAuB,KAAC,GAAI;IAAf,cAAC"}
-//// https://sokra.github.io/source-map-visualization#base64,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,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYWxsLmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsidGVzdHMvY2FzZXMvY29tcGlsZXIvcmVmL2EudHMiLCJ0ZXN0cy9jYXNlcy9jb21waWxlci9iLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiI7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7SUFBQTtRQUFBO1FBQWlCLENBQUM7UUFBRCxRQUFDO0lBQUQsQ0FBQyxBQUFsQixJQUFrQjtJQUFMLGNBQUM7Ozs7OztJQ0NkO1FBQXVCLHFCQUFDO1FBQXhCOztRQUEyQixDQUFDO1FBQUQsUUFBQztJQUFELENBQUMsQUFBNUIsQ0FBdUIsS0FBQyxHQUFJO0lBQWYsY0FBQyJ9,ZXhwb3J0IGNsYXNzIEEgeyB9Cg==,aW1wb3J0IHtBfSBmcm9tICIuL3JlZi9hIjsKZXhwb3J0IGNsYXNzIEIgZXh0ZW5kcyBBIHsgfQ==
+{"version":3,"file":"all.js","sourceRoot":"","sources":["ref/a.ts","b.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;IAAA;QAAA;QAAiB,CAAC;QAAD,QAAC;IAAD,CAAC,AAAlB,IAAkB;IAAL,cAAC;;;;;;ICCd;QAAuB,qBAAC;QAAxB;;QAA2B,CAAC;QAAD,QAAC;IAAD,CAAC,AAA5B,CAAuB,KAAC,GAAI;IAAf,cAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,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,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYWxsLmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsicmVmL2EudHMiLCJiLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiI7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7SUFBQTtRQUFBO1FBQWlCLENBQUM7UUFBRCxRQUFDO0lBQUQsQ0FBQyxBQUFsQixJQUFrQjtJQUFMLGNBQUM7Ozs7OztJQ0NkO1FBQXVCLHFCQUFDO1FBQXhCOztRQUEyQixDQUFDO1FBQUQsUUFBQztJQUFELENBQUMsQUFBNUIsQ0FBdUIsS0FBQyxHQUFJO0lBQWYsY0FBQyJ9,ZXhwb3J0IGNsYXNzIEEgeyB9Cg==,aW1wb3J0IHtBfSBmcm9tICIuL3JlZi9hIjsKZXhwb3J0IGNsYXNzIEIgZXh0ZW5kcyBBIHsgfQ==
diff --git a/tests/baselines/reference/outModuleConcatAmd.sourcemap.txt b/tests/baselines/reference/outModuleConcatAmd.sourcemap.txt
index 3d23b747e62..03a630b6704 100644
--- a/tests/baselines/reference/outModuleConcatAmd.sourcemap.txt
+++ b/tests/baselines/reference/outModuleConcatAmd.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: all.js
 mapUrl: all.js.map
 sourceRoot: 
-sources: tests/cases/compiler/ref/a.ts,tests/cases/compiler/b.ts
+sources: ref/a.ts,b.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:all.js
-sourceFile:tests/cases/compiler/ref/a.ts
+emittedFile:tests/cases/compiler/all.js
+sourceFile:ref/a.ts
 -------------------------------------------------------------------
 >>>var __extends = (this && this.__extends) || (function () {
 >>>    var extendStatics = function (d, b) {
@@ -80,8 +80,8 @@ sourceFile:tests/cases/compiler/ref/a.ts
 2 >Emitted(25, 19) Source(1, 15) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:all.js
-sourceFile:tests/cases/compiler/b.ts
+emittedFile:tests/cases/compiler/all.js
+sourceFile:b.ts
 -------------------------------------------------------------------
 >>>});
 >>>define("b", ["require", "exports", "ref/a"], function (require, exports, a_1) {
diff --git a/tests/baselines/reference/outModuleConcatSystem.js.map b/tests/baselines/reference/outModuleConcatSystem.js.map
index ee2ee739c85..51a8455ab60 100644
--- a/tests/baselines/reference/outModuleConcatSystem.js.map
+++ b/tests/baselines/reference/outModuleConcatSystem.js.map
@@ -1,3 +1,3 @@
 //// [all.js.map]
-{"version":3,"file":"all.js","sourceRoot":"","sources":["tests/cases/compiler/ref/a.ts","tests/cases/compiler/b.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;YAAA;gBAAA;gBAAiB,CAAC;gBAAD,QAAC;YAAD,CAAC,AAAlB,IAAkB;;QAClB,CAAC;;;;;;;;;;;;;;YCAD;gBAAuB,qBAAC;gBAAxB;;gBAA2B,CAAC;gBAAD,QAAC;YAAD,CAAC,AAA5B,CAAuB,KAAC,GAAI;;QAAA,CAAC"}
-//// https://sokra.github.io/source-map-visualization#base64,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,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYWxsLmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsidGVzdHMvY2FzZXMvY29tcGlsZXIvcmVmL2EudHMiLCJ0ZXN0cy9jYXNlcy9jb21waWxlci9iLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiI7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7WUFBQTtnQkFBQTtnQkFBaUIsQ0FBQztnQkFBRCxRQUFDO1lBQUQsQ0FBQyxBQUFsQixJQUFrQjs7UUFDbEIsQ0FBQzs7Ozs7Ozs7Ozs7Ozs7WUNBRDtnQkFBdUIscUJBQUM7Z0JBQXhCOztnQkFBMkIsQ0FBQztnQkFBRCxRQUFDO1lBQUQsQ0FBQyxBQUE1QixDQUF1QixLQUFDLEdBQUk7O1FBQUEsQ0FBQyJ9,ZXhwb3J0IGNsYXNzIEEgeyB9Cg==,aW1wb3J0IHtBfSBmcm9tICIuL3JlZi9hIjsKZXhwb3J0IGNsYXNzIEIgZXh0ZW5kcyBBIHsgfQ==
+{"version":3,"file":"all.js","sourceRoot":"","sources":["ref/a.ts","b.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;;;;;;;;YAAA;gBAAA;gBAAiB,CAAC;gBAAD,QAAC;YAAD,CAAC,AAAlB,IAAkB;;QAClB,CAAC;;;;;;;;;;;;;;YCAD;gBAAuB,qBAAC;gBAAxB;;gBAA2B,CAAC;gBAAD,QAAC;YAAD,CAAC,AAA5B,CAAuB,KAAC,GAAI;;QAAA,CAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,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,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYWxsLmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsicmVmL2EudHMiLCJiLnRzIl0sIm5hbWVzIjpbXSwibWFwcGluZ3MiOiI7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7Ozs7WUFBQTtnQkFBQTtnQkFBaUIsQ0FBQztnQkFBRCxRQUFDO1lBQUQsQ0FBQyxBQUFsQixJQUFrQjs7UUFDbEIsQ0FBQzs7Ozs7Ozs7Ozs7Ozs7WUNBRDtnQkFBdUIscUJBQUM7Z0JBQXhCOztnQkFBMkIsQ0FBQztnQkFBRCxRQUFDO1lBQUQsQ0FBQyxBQUE1QixDQUF1QixLQUFDLEdBQUk7O1FBQUEsQ0FBQyJ9,ZXhwb3J0IGNsYXNzIEEgeyB9Cg==,aW1wb3J0IHtBfSBmcm9tICIuL3JlZi9hIjsKZXhwb3J0IGNsYXNzIEIgZXh0ZW5kcyBBIHsgfQ==
diff --git a/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt b/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt
index 742cccc9f09..6f4655aef06 100644
--- a/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt
+++ b/tests/baselines/reference/outModuleConcatSystem.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: all.js
 mapUrl: all.js.map
 sourceRoot: 
-sources: tests/cases/compiler/ref/a.ts,tests/cases/compiler/b.ts
+sources: ref/a.ts,b.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:all.js
-sourceFile:tests/cases/compiler/ref/a.ts
+emittedFile:tests/cases/compiler/all.js
+sourceFile:ref/a.ts
 -------------------------------------------------------------------
 >>>var __extends = (this && this.__extends) || (function () {
 >>>    var extendStatics = function (d, b) {
@@ -85,8 +85,8 @@ sourceFile:tests/cases/compiler/ref/a.ts
 2 >Emitted(29, 10) Source(2, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:all.js
-sourceFile:tests/cases/compiler/b.ts
+emittedFile:tests/cases/compiler/all.js
+sourceFile:b.ts
 -------------------------------------------------------------------
 >>>    };
 >>>});
diff --git a/tests/baselines/reference/outModuleTripleSlashRefs.js b/tests/baselines/reference/outModuleTripleSlashRefs.js
index 251e07a5476..2c6a0c33e18 100644
--- a/tests/baselines/reference/outModuleTripleSlashRefs.js
+++ b/tests/baselines/reference/outModuleTripleSlashRefs.js
@@ -79,7 +79,7 @@ define("b", ["require", "exports", "ref/a"], function (require, exports, a_1) {
 //# sourceMappingURL=all.js.map
 
 //// [all.d.ts]
-/// <reference path="tests/cases/compiler/ref/c.d.ts" />
+/// <reference path="ref/c.d.ts" />
 declare class Foo {
     member: Bar;
 }
diff --git a/tests/baselines/reference/outModuleTripleSlashRefs.js.map b/tests/baselines/reference/outModuleTripleSlashRefs.js.map
index 61eb1e79dba..ae38a0fe94c 100644
--- a/tests/baselines/reference/outModuleTripleSlashRefs.js.map
+++ b/tests/baselines/reference/outModuleTripleSlashRefs.js.map
@@ -1,3 +1,3 @@
 //// [all.js.map]
-{"version":3,"file":"all.js","sourceRoot":"","sources":["tests/cases/compiler/ref/b.ts","tests/cases/compiler/ref/a.ts","tests/cases/compiler/b.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;AAAA,iCAAiC;AACjC;IAAA;IAEA,CAAC;IAAD,UAAC;AAAD,CAAC,AAFD,IAEC;;;;;ICHD,+BAA+B;IAC/B;QAAA;QAEA,CAAC;QAAD,QAAC;IAAD,CAAC,AAFD,IAEC;IAFY,cAAC;;;;;;ICAd;QAAuB,qBAAC;QAAxB;;QAA2B,CAAC;QAAD,QAAC;IAAD,CAAC,AAA5B,CAAuB,KAAC,GAAI;IAAf,cAAC"}
-//// https://sokra.github.io/source-map-visualization#base64,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,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,Ly8vIDxyZWZlcmVuY2UgcGF0aD0iLi9jLmQudHMiIC8+CmNsYXNzIEZvbyB7CgltZW1iZXI6IEJhcjsKfQpkZWNsYXJlIHZhciBHbG9iYWxGb286IEZvbzsK,Ly8vIDxyZWZlcmVuY2UgcGF0aD0iLi9iLnRzIiAvPgpleHBvcnQgY2xhc3MgQSB7CgltZW1iZXI6IHR5cGVvZiBHbG9iYWxGb287Cn0K,aW1wb3J0IHtBfSBmcm9tICIuL3JlZi9hIjsKZXhwb3J0IGNsYXNzIEIgZXh0ZW5kcyBBIHsgfQo=
+{"version":3,"file":"all.js","sourceRoot":"","sources":["ref/b.ts","ref/a.ts","b.ts"],"names":[],"mappings":";;;;;;;;;;;;;;;AAAA,iCAAiC;AACjC;IAAA;IAEA,CAAC;IAAD,UAAC;AAAD,CAAC,AAFD,IAEC;;;;;ICHD,+BAA+B;IAC/B;QAAA;QAEA,CAAC;QAAD,QAAC;IAAD,CAAC,AAFD,IAEC;IAFY,cAAC;;;;;;ICAd;QAAuB,qBAAC;QAAxB;;QAA2B,CAAC;QAAD,QAAC;IAAD,CAAC,AAA5B,CAAuB,KAAC,GAAI;IAAf,cAAC"}
+//// https://sokra.github.io/source-map-visualization#base64,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,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiYWxsLmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsicmVmL2IudHMiLCJyZWYvYS50cyIsImIudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7Ozs7Ozs7Ozs7Ozs7O0FBQUEsaUNBQWlDO0FBQ2pDO0lBQUE7SUFFQSxDQUFDO0lBQUQsVUFBQztBQUFELENBQUMsQUFGRCxJQUVDOzs7OztJQ0hELCtCQUErQjtJQUMvQjtRQUFBO1FBRUEsQ0FBQztRQUFELFFBQUM7SUFBRCxDQUFDLEFBRkQsSUFFQztJQUZZLGNBQUM7Ozs7OztJQ0FkO1FBQXVCLHFCQUFDO1FBQXhCOztRQUEyQixDQUFDO1FBQUQsUUFBQztJQUFELENBQUMsQUFBNUIsQ0FBdUIsS0FBQyxHQUFJO0lBQWYsY0FBQyJ9,Ly8vIDxyZWZlcmVuY2UgcGF0aD0iLi9jLmQudHMiIC8+CmNsYXNzIEZvbyB7CgltZW1iZXI6IEJhcjsKfQpkZWNsYXJlIHZhciBHbG9iYWxGb286IEZvbzsK,Ly8vIDxyZWZlcmVuY2UgcGF0aD0iLi9iLnRzIiAvPgpleHBvcnQgY2xhc3MgQSB7CgltZW1iZXI6IHR5cGVvZiBHbG9iYWxGb287Cn0K,Ly8vIDxyZWZlcmVuY2UgcGF0aD0iLi9jLmQudHMiIC8+CmNsYXNzIEZvbyB7CgltZW1iZXI6IEJhcjsKfQpkZWNsYXJlIHZhciBHbG9iYWxGb286IEZvbzsK
diff --git a/tests/baselines/reference/outModuleTripleSlashRefs.sourcemap.txt b/tests/baselines/reference/outModuleTripleSlashRefs.sourcemap.txt
index ef9ca5aedb5..0c9857cb69d 100644
--- a/tests/baselines/reference/outModuleTripleSlashRefs.sourcemap.txt
+++ b/tests/baselines/reference/outModuleTripleSlashRefs.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: all.js
 mapUrl: all.js.map
 sourceRoot: 
-sources: tests/cases/compiler/ref/b.ts,tests/cases/compiler/ref/a.ts,tests/cases/compiler/b.ts
+sources: ref/b.ts,ref/a.ts,b.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:all.js
-sourceFile:tests/cases/compiler/ref/b.ts
+emittedFile:tests/cases/compiler/all.js
+sourceFile:ref/b.ts
 -------------------------------------------------------------------
 >>>var __extends = (this && this.__extends) || (function () {
 >>>    var extendStatics = function (d, b) {
@@ -82,8 +82,8 @@ sourceFile:tests/cases/compiler/ref/b.ts
 4 >Emitted(21, 6) Source(4, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:all.js
-sourceFile:tests/cases/compiler/ref/a.ts
+emittedFile:tests/cases/compiler/all.js
+sourceFile:ref/a.ts
 -------------------------------------------------------------------
 >>>define("ref/a", ["require", "exports"], function (require, exports) {
 >>>    "use strict";
@@ -156,8 +156,8 @@ sourceFile:tests/cases/compiler/ref/a.ts
 2 >Emitted(32, 19) Source(2, 15) + SourceIndex(1)
 ---
 -------------------------------------------------------------------
-emittedFile:all.js
-sourceFile:tests/cases/compiler/b.ts
+emittedFile:tests/cases/compiler/all.js
+sourceFile:b.ts
 -------------------------------------------------------------------
 >>>});
 >>>define("b", ["require", "exports", "ref/a"], function (require, exports, a_1) {
diff --git a/tests/baselines/reference/requireOfJsonFile.js b/tests/baselines/reference/requireOfJsonFile.js
index 9093dbfc4e2..b713d4f68b1 100644
--- a/tests/baselines/reference/requireOfJsonFile.js
+++ b/tests/baselines/reference/requireOfJsonFile.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileNonRelative.js b/tests/baselines/reference/requireOfJsonFileNonRelative.js
index e7a63e45244..3aff7f7c98b 100644
--- a/tests/baselines/reference/requireOfJsonFileNonRelative.js
+++ b/tests/baselines/reference/requireOfJsonFileNonRelative.js
@@ -22,7 +22,7 @@ if (x) {
 }
 
 
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtension.js b/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtension.js
index 1092bd8955a..b81f5f7ca91 100644
--- a/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtension.js
+++ b/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtension.js
@@ -22,6 +22,6 @@ import e = require("e"); // Should fail
     "b": "hello"
 }
 
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtensionResolvesToTs.js b/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtensionResolvesToTs.js
index 8ad2a61f2b5..76fafedc84c 100644
--- a/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtensionResolvesToTs.js
+++ b/tests/baselines/reference/requireOfJsonFileNonRelativeWithoutExtensionResolvesToTs.js
@@ -14,10 +14,10 @@ let fnumber: number = f;
 export = 10;
 
 
-//// [out/node_modules/f.js]
+//// [tests/cases/compiler/out/node_modules/f.js]
 "use strict";
 module.exports = 10;
-//// [out/projects/file1.js]
+//// [tests/cases/compiler/out/projects/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var f = require("f"); // should work to f.ts
diff --git a/tests/baselines/reference/requireOfJsonFileTypes.js b/tests/baselines/reference/requireOfJsonFileTypes.js
index d8fd00a4848..2c0c138ccd6 100644
--- a/tests/baselines/reference/requireOfJsonFileTypes.js
+++ b/tests/baselines/reference/requireOfJsonFileTypes.js
@@ -45,24 +45,24 @@ booleanLiteral = g[0];
 //// [g.json]
 [true, false]
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello",
     "c": null,
     "d": false
 }
-//// [out/c.json]
+//// [tests/cases/compiler/out/c.json]
 ["a", null, "string"]
-//// [out/d.json]
+//// [tests/cases/compiler/out/d.json]
 "dConfig"
-//// [out/e.json]
+//// [tests/cases/compiler/out/e.json]
 -10
-//// [out/f.json]
+//// [tests/cases/compiler/out/f.json]
 [-10, 30]
-//// [out/g.json]
+//// [tests/cases/compiler/out/g.json]
 [true, false]
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b = require("./b.json");
@@ -85,5 +85,5 @@ numberLiteral = f[0];
 booleanLiteral = g[0];
 
 
-//// [out/file1.d.ts]
+//// [tests/cases/compiler/out/file1.d.ts]
 export {};
diff --git a/tests/baselines/reference/requireOfJsonFileWithAmd.js b/tests/baselines/reference/requireOfJsonFileWithAmd.js
index 984288a6b7c..9cdf04bf54f 100644
--- a/tests/baselines/reference/requireOfJsonFileWithAmd.js
+++ b/tests/baselines/reference/requireOfJsonFileWithAmd.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 define(["require", "exports", "./b", "./b.json"], function (require, exports, b1, b2) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithDeclaration.js b/tests/baselines/reference/requireOfJsonFileWithDeclaration.js
index 7f51f8ada80..20cfda7a306 100644
--- a/tests/baselines/reference/requireOfJsonFileWithDeclaration.js
+++ b/tests/baselines/reference/requireOfJsonFileWithDeclaration.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
@@ -32,5 +32,5 @@ if (x) {
 }
 
 
-//// [out/file1.d.ts]
+//// [tests/cases/compiler/out/file1.d.ts]
 export {};
diff --git a/tests/baselines/reference/requireOfJsonFileWithEmptyObject.js b/tests/baselines/reference/requireOfJsonFileWithEmptyObject.js
index fff8f7f26ff..d1f16a5064a 100644
--- a/tests/baselines/reference/requireOfJsonFileWithEmptyObject.js
+++ b/tests/baselines/reference/requireOfJsonFileWithEmptyObject.js
@@ -12,9 +12,9 @@ if (x) {
 {
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {}
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileWithEmptyObjectWithErrors.js b/tests/baselines/reference/requireOfJsonFileWithEmptyObjectWithErrors.js
index 285fcb9bdc6..9c1be09deef 100644
--- a/tests/baselines/reference/requireOfJsonFileWithEmptyObjectWithErrors.js
+++ b/tests/baselines/reference/requireOfJsonFileWithEmptyObjectWithErrors.js
@@ -13,9 +13,9 @@ if (x) {
 {
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {}
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileWithErrors.js b/tests/baselines/reference/requireOfJsonFileWithErrors.js
index 1bcb1ca39ae..21e9f90b149 100644
--- a/tests/baselines/reference/requireOfJsonFileWithErrors.js
+++ b/tests/baselines/reference/requireOfJsonFileWithErrors.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     'a': true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleEmitNone.js b/tests/baselines/reference/requireOfJsonFileWithModuleEmitNone.js
index f99ccbf6a5a..5d09bf571a0 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleEmitNone.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleEmitNone.js
@@ -9,11 +9,11 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleEmitUndefined.js b/tests/baselines/reference/requireOfJsonFileWithModuleEmitUndefined.js
index 26266baf0ca..63f24df289d 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleEmitUndefined.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleEmitUndefined.js
@@ -9,11 +9,11 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmd.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmd.js
index ace649a8626..e10023410ca 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmd.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmd.js
@@ -9,12 +9,12 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 define(["require", "exports"], function (require, exports) {
     "use strict";
     Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmdOutFile.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmdOutFile.js
index 3b3d13f4f3d..f49f0dbe060 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmdOutFile.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitAmdOutFile.js
@@ -9,7 +9,7 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/output.js]
+//// [tests/cases/compiler/out/output.js]
 define("b", [], {
     "a": true,
     "b": "hello"
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEs2015.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEs2015.js
index 60bb84c2b3d..37495669699 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEs2015.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEs2015.js
@@ -9,10 +9,10 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 export {};
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEsNext.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEsNext.js
index 2f37693eed3..01d1f0d38b7 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEsNext.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitEsNext.js
@@ -9,10 +9,10 @@ import * as b  from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 export {};
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitNone.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitNone.js
index 897a14fb51f..4279692ef36 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitNone.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitNone.js
@@ -9,11 +9,11 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitSystem.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitSystem.js
index 5174a101848..cf8cb671807 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitSystem.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitSystem.js
@@ -9,12 +9,12 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 System.register([], function (exports_1, context_1) {
     "use strict";
     var __moduleName = context_1 && context_1.id;
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUmd.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUmd.js
index d62dac4b97e..7f54381914a 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUmd.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUmd.js
@@ -9,12 +9,12 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 (function (factory) {
     if (typeof module === "object" && typeof module.exports === "object") {
         var v = factory(require, exports);
diff --git a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUndefined.js b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUndefined.js
index 4943fbca648..0d5190dd30b 100644
--- a/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUndefined.js
+++ b/tests/baselines/reference/requireOfJsonFileWithModuleNodeResolutionEmitUndefined.js
@@ -9,11 +9,11 @@ import * as b from './b.json';
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithNoContent.js b/tests/baselines/reference/requireOfJsonFileWithNoContent.js
index 9f2b711855a..07bc9f73338 100644
--- a/tests/baselines/reference/requireOfJsonFileWithNoContent.js
+++ b/tests/baselines/reference/requireOfJsonFileWithNoContent.js
@@ -12,8 +12,8 @@ if (x) {
 //// [b.json]
 
 
-//// [out/b.json]
-//// [out/file1.js]
+//// [tests/cases/compiler/out/b.json]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileWithSourceMap.js b/tests/baselines/reference/requireOfJsonFileWithSourceMap.js
index 79b91792e72..18f969c25f7 100644
--- a/tests/baselines/reference/requireOfJsonFileWithSourceMap.js
+++ b/tests/baselines/reference/requireOfJsonFileWithSourceMap.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileWithSourceMap.js.map b/tests/baselines/reference/requireOfJsonFileWithSourceMap.js.map
index d0848a65469..cdbea3dbdf1 100644
--- a/tests/baselines/reference/requireOfJsonFileWithSourceMap.js.map
+++ b/tests/baselines/reference/requireOfJsonFileWithSourceMap.js.map
@@ -1,2 +1,2 @@
-//// [out/file1.js.map]
-{"version":3,"file":"file1.js","sourceRoot":"","sources":["../tests/cases/compiler/file1.ts"],"names":[],"mappings":";;AAAA,6BAAgC;AAChC,IAAI,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;AACb,6BAAgC;AAChC,IAAI,CAAC,EAAE;IACH,IAAI,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;IACb,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;CACpB"}
\ No newline at end of file
+//// [tests/cases/compiler/out/file1.js.map]
+{"version":3,"file":"file1.js","sourceRoot":"","sources":["../file1.ts"],"names":[],"mappings":";;AAAA,6BAAgC;AAChC,IAAI,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;AACb,6BAAgC;AAChC,IAAI,CAAC,EAAE;IACH,IAAI,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;IACb,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;CACpB"}
\ No newline at end of file
diff --git a/tests/baselines/reference/requireOfJsonFileWithSourceMap.sourcemap.txt b/tests/baselines/reference/requireOfJsonFileWithSourceMap.sourcemap.txt
index c2360484aec..d3c36f653fc 100644
--- a/tests/baselines/reference/requireOfJsonFileWithSourceMap.sourcemap.txt
+++ b/tests/baselines/reference/requireOfJsonFileWithSourceMap.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: file1.js
 mapUrl: file1.js.map
 sourceRoot: 
-sources: ../tests/cases/compiler/file1.ts
+sources: ../file1.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:out/file1.js
-sourceFile:../tests/cases/compiler/file1.ts
+emittedFile:tests/cases/compiler/out/file1.js
+sourceFile:../file1.ts
 -------------------------------------------------------------------
 >>>"use strict";
 >>>Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithTraillingComma.js b/tests/baselines/reference/requireOfJsonFileWithTraillingComma.js
index 1cd7742d1c7..3a6be0bb12b 100644
--- a/tests/baselines/reference/requireOfJsonFileWithTraillingComma.js
+++ b/tests/baselines/reference/requireOfJsonFileWithTraillingComma.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello",
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileWithoutAllowJs.js b/tests/baselines/reference/requireOfJsonFileWithoutAllowJs.js
index 669a228bb98..b696b66838d 100644
--- a/tests/baselines/reference/requireOfJsonFileWithoutAllowJs.js
+++ b/tests/baselines/reference/requireOfJsonFileWithoutAllowJs.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json");
diff --git a/tests/baselines/reference/requireOfJsonFileWithoutEsModuleInterop.js b/tests/baselines/reference/requireOfJsonFileWithoutEsModuleInterop.js
index ea5ac25b1b5..4a01709bec8 100644
--- a/tests/baselines/reference/requireOfJsonFileWithoutEsModuleInterop.js
+++ b/tests/baselines/reference/requireOfJsonFileWithoutEsModuleInterop.js
@@ -9,11 +9,11 @@ import * as test from "./test.json"
     "b": "hello"
 }
 
-//// [out/test.json]
+//// [tests/cases/compiler/out/test.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/requireOfJsonFileWithoutExtension.js b/tests/baselines/reference/requireOfJsonFileWithoutExtension.js
index 98e82ed6dde..f73b01e60c9 100644
--- a/tests/baselines/reference/requireOfJsonFileWithoutExtension.js
+++ b/tests/baselines/reference/requireOfJsonFileWithoutExtension.js
@@ -15,12 +15,12 @@ if (x) {
     "b": "hello"
 }
 
-//// [out/b.json]
+//// [tests/cases/compiler/out/b.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b"); // This should not resolve
diff --git a/tests/baselines/reference/requireOfJsonFileWithoutExtensionResolvesToTs.js b/tests/baselines/reference/requireOfJsonFileWithoutExtensionResolvesToTs.js
index f2de4e6a59e..1ccb40ccc45 100644
--- a/tests/baselines/reference/requireOfJsonFileWithoutExtensionResolvesToTs.js
+++ b/tests/baselines/reference/requireOfJsonFileWithoutExtensionResolvesToTs.js
@@ -24,15 +24,15 @@ if (x2) {
 //// [c.ts]
 export = { a: true, b: "hello" };
 
-//// [out/c.js]
+//// [tests/cases/compiler/out/c.js]
 "use strict";
 module.exports = { a: true, b: "hello" };
-//// [out/c.json]
+//// [tests/cases/compiler/out/c.json]
 {
     "a": true,
     "b": "hello"
 }
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var c1 = require("./c"); // resolves to c.ts 
diff --git a/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModule.js b/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModule.js
index 3fedccc7d84..e8cc3d3ed0f 100644
--- a/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModule.js
+++ b/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModule.js
@@ -12,7 +12,7 @@ if (x) {
 //// [b.json]
 contents Not read
 
-//// [out/file1.js]
+//// [tests/cases/compiler/out/file1.js]
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var b1 = require("./b.json"); // error
diff --git a/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.js.map b/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.js.map
index f34c47f2210..da65cbe4cfb 100644
--- a/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.js.map
+++ b/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.js.map
@@ -1,2 +1,2 @@
 //// [fooResult.js.map]
-{"version":3,"file":"fooResult.js","sourceRoot":"","sources":["../testFiles/app.ts","../testFiles/app2.ts"],"names":[],"mappings":"AAAA,gFAAgF;AAChF,wIAAwI;AACxI;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC;ACHD;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC"}
\ No newline at end of file
+{"version":3,"file":"fooResult.js","sourceRoot":"","sources":["../tests/cases/compiler/testFiles/app.ts","../tests/cases/compiler/testFiles/app2.ts"],"names":[],"mappings":"AAAA,gFAAgF;AAChF,wIAAwI;AACxI;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC;ACHD;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC"}
\ No newline at end of file
diff --git a/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.sourcemap.txt b/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.sourcemap.txt
index 834b858a7dc..62f89e7fb16 100644
--- a/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.sourcemap.txt
+++ b/tests/baselines/reference/sourceMapWithCaseSensitiveFileNames.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: fooResult.js
 mapUrl: fooResult.js.map
 sourceRoot: 
-sources: ../testFiles/app.ts,../testFiles/app2.ts
+sources: ../tests/cases/compiler/testFiles/app.ts,../tests/cases/compiler/testFiles/app2.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:tests/cases/compiler/testfiles/fooResult.js
-sourceFile:../testFiles/app.ts
+emittedFile:testfiles/fooResult.js
+sourceFile:../tests/cases/compiler/testFiles/app.ts
 -------------------------------------------------------------------
 >>>// Note in the out result we are using same folder name only different in casing
 1 >
@@ -74,8 +74,8 @@ sourceFile:../testFiles/app.ts
 4 >Emitted(7, 6) Source(4, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:tests/cases/compiler/testfiles/fooResult.js
-sourceFile:../testFiles/app2.ts
+emittedFile:testfiles/fooResult.js
+sourceFile:../tests/cases/compiler/testFiles/app2.ts
 -------------------------------------------------------------------
 >>>var d = /** @class */ (function () {
 1->
diff --git a/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.js.map b/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.js.map
index 7a56ccbd998..58c51aafcb7 100644
--- a/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.js.map
+++ b/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.js.map
@@ -1,3 +1,2 @@
 //// [fooResult.js.map]
-{"version":3,"file":"fooResult.js","sourceRoot":"","sources":["app.ts","app2.ts"],"names":[],"mappings":"AAAA,gFAAgF;AAChF,0GAA0G;AAC1G;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC;ACHD;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC"}
-//// https://sokra.github.io/source-map-visualization#base64,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,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZm9vUmVzdWx0LmpzIiwic291cmNlUm9vdCI6IiIsInNvdXJjZXMiOlsiYXBwLnRzIiwiYXBwMi50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiQUFBQSxnRkFBZ0Y7QUFDaEYsMEdBQTBHO0FBQzFHO0lBQUE7SUFDQSxDQUFDO0lBQUQsUUFBQztBQUFELENBQUMsQUFERCxJQUNDO0FDSEQ7SUFBQTtJQUNBLENBQUM7SUFBRCxRQUFDO0FBQUQsQ0FBQyxBQURELElBQ0MifQ==,Ly8gTm90ZSBpbiB0aGUgb3V0IHJlc3VsdCB3ZSBhcmUgdXNpbmcgc2FtZSBmb2xkZXIgbmFtZSBvbmx5IGRpZmZlcmVudCBpbiBjYXNpbmcKLy8gU2luY2UgdGhpcyBpcyBub24gY2FzZSBzZW5zaXRpdmUsIHRoZSByZWxhdGl2ZSBwYXRocyBzaG91bGQgYmUganVzdCBhcHAudHMgYW5kIGFwcDIudHMgaW4gdGhlIHNvdXJjZW1hcApjbGFzcyBjIHsKfQo=,Y2xhc3MgZCB7Cn0=
+{"version":3,"file":"fooResult.js","sourceRoot":"","sources":["../tests/cases/compiler/testFiles/app.ts","../tests/cases/compiler/testFiles/app2.ts"],"names":[],"mappings":"AAAA,gFAAgF;AAChF,0GAA0G;AAC1G;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC;ACHD;IAAA;IACA,CAAC;IAAD,QAAC;AAAD,CAAC,AADD,IACC"}
\ No newline at end of file
diff --git a/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.sourcemap.txt b/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.sourcemap.txt
index 9b54bd34d71..f890e837507 100644
--- a/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.sourcemap.txt
+++ b/tests/baselines/reference/sourceMapWithNonCaseSensitiveFileNames.sourcemap.txt
@@ -2,11 +2,11 @@
 JsFile: fooResult.js
 mapUrl: fooResult.js.map
 sourceRoot: 
-sources: app.ts,app2.ts
+sources: ../tests/cases/compiler/testFiles/app.ts,../tests/cases/compiler/testFiles/app2.ts
 ===================================================================
 -------------------------------------------------------------------
-emittedFile:tests/cases/compiler/testfiles/fooResult.js
-sourceFile:app.ts
+emittedFile:testfiles/fooResult.js
+sourceFile:../tests/cases/compiler/testFiles/app.ts
 -------------------------------------------------------------------
 >>>// Note in the out result we are using same folder name only different in casing
 1 >
@@ -74,8 +74,8 @@ sourceFile:app.ts
 4 >Emitted(7, 6) Source(4, 2) + SourceIndex(0)
 ---
 -------------------------------------------------------------------
-emittedFile:tests/cases/compiler/testfiles/fooResult.js
-sourceFile:app2.ts
+emittedFile:testfiles/fooResult.js
+sourceFile:../tests/cases/compiler/testFiles/app2.ts
 -------------------------------------------------------------------
 >>>var d = /** @class */ (function () {
 1->
diff --git a/tests/cases/compiler/declarationEmitBundleWithAmbientReferences.ts b/tests/cases/compiler/declarationEmitBundleWithAmbientReferences.ts
index 58fae79a613..a8f20df82a3 100644
--- a/tests/cases/compiler/declarationEmitBundleWithAmbientReferences.ts
+++ b/tests/cases/compiler/declarationEmitBundleWithAmbientReferences.ts
@@ -1,7 +1,7 @@
 // @noResolve: true
 // @declaration: true
 // @module: amd
-// @outFile: tests/cases/compiler/out/datastore.bundle.js
+// @outFile: out/datastore.bundle.js
 // @filename: lib/lib.d.ts
 declare module "lib/result" {
     export type Result<E extends Error, T> = (E & Failure<E>) | (T & Success<T>);
diff --git a/tests/cases/compiler/declarationEmitPathMappingMonorepo.ts b/tests/cases/compiler/declarationEmitPathMappingMonorepo.ts
index 998ef63fae2..ea392197ba4 100644
--- a/tests/cases/compiler/declarationEmitPathMappingMonorepo.ts
+++ b/tests/cases/compiler/declarationEmitPathMappingMonorepo.ts
@@ -24,5 +24,5 @@ export function b(text: string) {
     }
 }
 
-// @link: tests/cases/compiler/packages/a -> tests/cases/compiler/node_modules/@ts-bug/a
-// @link: tests/cases/compiler/packages/b -> tests/cases/compiler/node_modules/@ts-bug/b
+// @link: packages/a -> node_modules/@ts-bug/a
+// @link: packages/b -> node_modules/@ts-bug/b
diff --git a/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling.ts b/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling.ts
index 3cdce58fe65..4bb09d93c44 100644
--- a/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling.ts
+++ b/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling.ts
@@ -1,8 +1,8 @@
 // @declaration: true
 // @target: es5
-// @baseUrl: /.src/tests/cases/compiler
+// @baseUrl: .
 // @outDir: ./dist
-// @rootDir: ./tests/cases/compiler/src
+// @rootDir: ./src
 // @filename: src/lib/operators/scalar.ts
 export interface Scalar {
 	(): string;
diff --git a/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling2.ts b/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling2.ts
index df57d488fbb..ad40e87fffe 100644
--- a/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling2.ts
+++ b/tests/cases/compiler/declarationEmitPrefersPathKindBasedOnBundling2.ts
@@ -1,9 +1,9 @@
 // @declaration: true
 // @target: es5
-// @baseUrl: /.src/tests/cases/compiler
+// @baseUrl: .
 // @module: amd
 // @outFile: ./dist.js
-// @rootDir: ./tests/cases/compiler/src
+// @rootDir: ./src
 // @filename: src/lib/operators/scalar.ts
 export interface Scalar {
 	(): string;
diff --git a/tests/cases/compiler/declarationEmitReexportedSymlinkReference.ts b/tests/cases/compiler/declarationEmitReexportedSymlinkReference.ts
index d0f58e2ede7..a75d82d0ddd 100644
--- a/tests/cases/compiler/declarationEmitReexportedSymlinkReference.ts
+++ b/tests/cases/compiler/declarationEmitReexportedSymlinkReference.ts
@@ -52,5 +52,5 @@ export const ADMIN = MetadataAccessor.create<boolean>('1');
       "declaration": true
     }
 }
-// @link: tests/cases/compiler/monorepo/pkg1 -> tests/cases/compiler/monorepo/pkg2/node_modules/@raymondfeng/pkg1
-// @link: tests/cases/compiler/monorepo/pkg2 -> tests/cases/compiler/monorepo/pkg3/node_modules/@raymondfeng/pkg2
+// @link: monorepo/pkg1 -> monorepo/pkg2/node_modules/@raymondfeng/pkg1
+// @link: monorepo/pkg2 -> monorepo/pkg3/node_modules/@raymondfeng/pkg2
diff --git a/tests/cases/compiler/declarationEmitReexportedSymlinkReference2.ts b/tests/cases/compiler/declarationEmitReexportedSymlinkReference2.ts
index 764a2c3f0ba..b3e66832e70 100644
--- a/tests/cases/compiler/declarationEmitReexportedSymlinkReference2.ts
+++ b/tests/cases/compiler/declarationEmitReexportedSymlinkReference2.ts
@@ -55,5 +55,5 @@ export const ADMIN = MetadataAccessor.create<boolean>('1');
       "declaration": true
     }
 }
-// @link: tests/cases/compiler/monorepo/pkg1 -> tests/cases/compiler/monorepo/pkg2/node_modules/@raymondfeng/pkg1
-// @link: tests/cases/compiler/monorepo/pkg2 -> tests/cases/compiler/monorepo/pkg3/node_modules/@raymondfeng/pkg2
+// @link: monorepo/pkg1 -> monorepo/pkg2/node_modules/@raymondfeng/pkg1
+// @link: monorepo/pkg2 -> monorepo/pkg3/node_modules/@raymondfeng/pkg2
diff --git a/tests/cases/compiler/declarationEmitReexportedSymlinkReference3.ts b/tests/cases/compiler/declarationEmitReexportedSymlinkReference3.ts
index e65b752a3a0..d9ee4d1f0fd 100644
--- a/tests/cases/compiler/declarationEmitReexportedSymlinkReference3.ts
+++ b/tests/cases/compiler/declarationEmitReexportedSymlinkReference3.ts
@@ -52,5 +52,5 @@ export const ADMIN = MetadataAccessor.create<boolean>('1');
       "declaration": true
     }
 }
-// @link: tests/cases/compiler/monorepo/pkg1 -> tests/cases/compiler/monorepo/pkg2/node_modules/@raymondfeng/pkg1
-// @link: tests/cases/compiler/monorepo/pkg2 -> tests/cases/compiler/monorepo/pkg3/node_modules/@raymondfeng/pkg2
+// @link: monorepo/pkg1 -> monorepo/pkg2/node_modules/@raymondfeng/pkg1
+// @link: monorepo/pkg2 -> monorepo/pkg3/node_modules/@raymondfeng/pkg2
diff --git a/tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts b/tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts
index a44f3014db3..dfe78d76929 100644
--- a/tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts
+++ b/tests/cases/compiler/declarationFileOverwriteErrorWithOut.ts
@@ -1,11 +1,11 @@
 // @declaration: true
 
-// @out: tests/cases/compiler/out.js
+// @out: /out.js
 
-// @Filename: out.d.ts
+// @Filename: /out.d.ts
 declare class c {
 }
 
-// @FileName: a.ts 
+// @FileName: /a.ts 
 class d {
 }
diff --git a/tests/cases/compiler/filesEmittingIntoSameOutputWithOutOption.ts b/tests/cases/compiler/filesEmittingIntoSameOutputWithOutOption.ts
index e8770c99fba..dfb226844d1 100644
--- a/tests/cases/compiler/filesEmittingIntoSameOutputWithOutOption.ts
+++ b/tests/cases/compiler/filesEmittingIntoSameOutputWithOutOption.ts
@@ -1,4 +1,4 @@
-// @out: tests/cases/compiler/a.js
+// @out: a.js
 // @module: amd
 // @filename: a.ts
 export class c {
diff --git a/tests/cases/compiler/jsDeclarationEmitExportedClassWithExtends.ts b/tests/cases/compiler/jsDeclarationEmitExportedClassWithExtends.ts
index b0851437ffc..5434bd3f9c9 100644
--- a/tests/cases/compiler/jsDeclarationEmitExportedClassWithExtends.ts
+++ b/tests/cases/compiler/jsDeclarationEmitExportedClassWithExtends.ts
@@ -1,5 +1,5 @@
 // @checkJs: true
-// @outDir: tests/cases/compiler/out
+// @outDir: out
 // @declaration: true
 // @module: esnext
 // @moduleResolution: nodenext
diff --git a/tests/cases/compiler/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.ts b/tests/cases/compiler/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.ts
index f1d772398d3..908af4b0c19 100644
--- a/tests/cases/compiler/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.ts
+++ b/tests/cases/compiler/jsFileCompilationWithOutDeclarationFileNameSameAsInputJsFile.ts
@@ -1,5 +1,5 @@
 // @declaration: true
-// @out: tests/cases/compiler/b.js
+// @out: b.js
 // @filename: a.ts
 class c {
 }
diff --git a/tests/cases/compiler/jsFileCompilationWithOutFileNameSameAsInputJsFile.ts b/tests/cases/compiler/jsFileCompilationWithOutFileNameSameAsInputJsFile.ts
index 16410244004..4bcfb132e00 100644
--- a/tests/cases/compiler/jsFileCompilationWithOutFileNameSameAsInputJsFile.ts
+++ b/tests/cases/compiler/jsFileCompilationWithOutFileNameSameAsInputJsFile.ts
@@ -1,9 +1,9 @@
 // @allowJs: true
-// @out: tests/cases/compiler/b.js
-// @filename: a.ts
+// @out: /b.js
+// @filename: /a.ts
 class c {
 }
 
-// @filename: b.js
+// @filename: /b.js
 function foo() {
 }
diff --git a/tests/cases/compiler/nodeNextPackageImportMapRootDir.ts b/tests/cases/compiler/nodeNextPackageImportMapRootDir.ts
index a0a8dfb8e7b..90bd5805766 100644
--- a/tests/cases/compiler/nodeNextPackageImportMapRootDir.ts
+++ b/tests/cases/compiler/nodeNextPackageImportMapRootDir.ts
@@ -1,6 +1,6 @@
 // @module: nodenext
 // @outDir: ./dist
-// @rootDir: tests/cases/compiler
+// @rootDir: .
 // @filename: package.json
 {
   "name": "@this/package",
diff --git a/tests/cases/compiler/nodeNextPackageSelfNameWithOutDirRootDir.ts b/tests/cases/compiler/nodeNextPackageSelfNameWithOutDirRootDir.ts
index 1e32c30e683..aa0434b0716 100644
--- a/tests/cases/compiler/nodeNextPackageSelfNameWithOutDirRootDir.ts
+++ b/tests/cases/compiler/nodeNextPackageSelfNameWithOutDirRootDir.ts
@@ -1,6 +1,6 @@
 // @module: nodenext
 // @outDir: ./dist
-// @rootDir: tests/cases/compiler
+// @rootDir: .
 // @filename: package.json
 {
   "name": "@this/package",
diff --git a/tests/cases/compiler/sourceMapWithCaseSensitiveFileNames.ts b/tests/cases/compiler/sourceMapWithCaseSensitiveFileNames.ts
index d0dff702aae..ebb8cf13a8a 100644
--- a/tests/cases/compiler/sourceMapWithCaseSensitiveFileNames.ts
+++ b/tests/cases/compiler/sourceMapWithCaseSensitiveFileNames.ts
@@ -1,4 +1,4 @@
-// @out: tests/cases/compiler/testfiles/fooResult.js
+// @out: testfiles/fooResult.js
 // @sourcemap: true
 // @useCaseSensitiveFileNames: true
 // @Filename: testFiles/app.ts
diff --git a/tests/cases/compiler/sourceMapWithCaseSensitiveFileNamesAndOutDir.ts b/tests/cases/compiler/sourceMapWithCaseSensitiveFileNamesAndOutDir.ts
index 17195b434e5..c96807ce1cb 100644
--- a/tests/cases/compiler/sourceMapWithCaseSensitiveFileNamesAndOutDir.ts
+++ b/tests/cases/compiler/sourceMapWithCaseSensitiveFileNamesAndOutDir.ts
@@ -1,4 +1,4 @@
-// @outDir: tests/cases/compiler/testfiles
+// @outDir: testfiles
 // @sourcemap: true
 // @useCaseSensitiveFileNames: true
 // @Filename: testFiles/app.ts
diff --git a/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNames.ts b/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNames.ts
index 85905fb29b9..3528b204688 100644
--- a/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNames.ts
+++ b/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNames.ts
@@ -1,4 +1,4 @@
-// @out: tests/cases/compiler/testfiles/fooResult.js
+// @out: testfiles/fooResult.js
 // @sourcemap: true
 // @useCaseSensitiveFileNames: false
 // @Filename: testFiles/app.ts
diff --git a/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNamesAndOutDir.ts b/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNamesAndOutDir.ts
index 90343b8cffc..9a4f0345d84 100644
--- a/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNamesAndOutDir.ts
+++ b/tests/cases/compiler/sourceMapWithNonCaseSensitiveFileNamesAndOutDir.ts
@@ -1,4 +1,4 @@
-// @outDir: tests/cases/compiler/testfiles
+// @outDir: testfiles
 // @sourcemap: true
 // @useCaseSensitiveFileNames: false
 // @Filename: testFiles/app.ts
diff --git a/tests/cases/compiler/symbolLinkDeclarationEmitModuleNames.ts b/tests/cases/compiler/symbolLinkDeclarationEmitModuleNames.ts
index 90a5c19196e..0bd81c58b02 100644
--- a/tests/cases/compiler/symbolLinkDeclarationEmitModuleNames.ts
+++ b/tests/cases/compiler/symbolLinkDeclarationEmitModuleNames.ts
@@ -22,4 +22,4 @@ export class BindingKey<T> {
 export * from "./src/value-promise";
 export * from "./src/bindingkey";
 
-// @link: tests/cases/compiler/monorepo/context -> tests/cases/compiler/monorepo/node_modules/@loopback/context
\ No newline at end of file
+// @link: monorepo/context -> monorepo/node_modules/@loopback/context
\ No newline at end of file
diff --git a/tests/cases/compiler/symbolLinkDeclarationEmitModuleNamesImportRef.ts b/tests/cases/compiler/symbolLinkDeclarationEmitModuleNamesImportRef.ts
index dc610c0aefb..4ff61e96360 100644
--- a/tests/cases/compiler/symbolLinkDeclarationEmitModuleNamesImportRef.ts
+++ b/tests/cases/compiler/symbolLinkDeclarationEmitModuleNamesImportRef.ts
@@ -20,5 +20,5 @@ export function getStyles() {
 	return styles;
 }
 
-// @link: tests/cases/compiler/Folder/node_modules/styled-components -> tests/cases/compiler/Folder/monorepo/package-a/node_modules/styled-components
-// @link: tests/cases/compiler/Folder/monorepo/package-a -> tests/cases/compiler/Folder/monorepo/core/node_modules/package-a
\ No newline at end of file
+// @link: Folder/node_modules/styled-components -> Folder/monorepo/package-a/node_modules/styled-components
+// @link: Folder/monorepo/package-a -> Folder/monorepo/core/node_modules/package-a
\ No newline at end of file
diff --git a/tests/cases/conformance/es6/moduleExportsAmd/outFilerootDirModuleNamesAmd.ts b/tests/cases/conformance/es6/moduleExportsAmd/outFilerootDirModuleNamesAmd.ts
index ae207e8f341..ce424529573 100644
--- a/tests/cases/conformance/es6/moduleExportsAmd/outFilerootDirModuleNamesAmd.ts
+++ b/tests/cases/conformance/es6/moduleExportsAmd/outFilerootDirModuleNamesAmd.ts
@@ -1,6 +1,6 @@
 // @target: ES6
 // @module: amd
-// @rootDir: tests/cases/conformance/es6/moduleExportsAmd/src
+// @rootDir: src
 // @outFile: output.js
 // @filename: src/a.ts
 import foo from "./b";
diff --git a/tests/cases/conformance/es6/moduleExportsSystem/outFilerootDirModuleNamesSystem.ts b/tests/cases/conformance/es6/moduleExportsSystem/outFilerootDirModuleNamesSystem.ts
index a301df92a17..f89592f1134 100644
--- a/tests/cases/conformance/es6/moduleExportsSystem/outFilerootDirModuleNamesSystem.ts
+++ b/tests/cases/conformance/es6/moduleExportsSystem/outFilerootDirModuleNamesSystem.ts
@@ -1,6 +1,6 @@
 // @target: ES6
 // @module: system
-// @rootDir: tests/cases/conformance/es6/moduleExportsSystem/src
+// @rootDir: src
 // @outFile: output.js
 // @filename: src/a.ts
 import foo from "./b";
diff --git a/tests/cases/conformance/references/library-reference-1.ts b/tests/cases/conformance/references/library-reference-1.ts
index c6b6cea36ef..7f05c689a96 100644
--- a/tests/cases/conformance/references/library-reference-1.ts
+++ b/tests/cases/conformance/references/library-reference-1.ts
@@ -1,7 +1,6 @@
 // @noImplicitReferences: true
 // @traceResolution: true
-// @currentDirectory: /src
-// @typeRoots: types
+// @typeRoots: /src/types
 
 // We can find typings in the ./types folder
 
diff --git a/tests/cases/conformance/references/library-reference-10.ts b/tests/cases/conformance/references/library-reference-10.ts
index bc9ec99edcf..ceed5aec756 100644
--- a/tests/cases/conformance/references/library-reference-10.ts
+++ b/tests/cases/conformance/references/library-reference-10.ts
@@ -1,7 +1,6 @@
 // @noImplicitReferences: true
 // @traceResolution: true
-// @currentDirectory: /foo
-// @typeRoots: ./types
+// @typeRoots: /foo/types
 
 // package.json in a primary reference can refer to another file
 
diff --git a/tests/cases/conformance/references/library-reference-15.ts b/tests/cases/conformance/references/library-reference-15.ts
index 417012a4539..eab57cad989 100644
--- a/tests/cases/conformance/references/library-reference-15.ts
+++ b/tests/cases/conformance/references/library-reference-15.ts
@@ -1,8 +1,7 @@
 // @noImplicitReferences: true
 // @traceResolution: true
 // @types: jquery
-// @currentDirectory: /a
-// @typeRoots: types
+// @typeRoots: /a/types
 
 // @filename: /a/types/jquery/index.d.ts
 declare var $: { foo(): void };