3682 Commits

Author SHA1 Message Date
Oleksandr T
8581a592bb
fix(43347): fix crash occurred when export type to existing commonJs imported name (#43369) 2021-04-06 08:46:22 -07:00
Anders Hejlsberg
a7a010a994
Fix getRecursionIdentity function to always return some identity (#43527)
* Fix getRecursionIdentity, undo changes from #43435 (but keep tests)

* Remove test that takes excessively long to run

* Accept new baselines

* Fix formatting

* Add regression tests

* Reinstate test
2021-04-05 09:53:38 -10:00
Wesley Wigham
cf8798d977
Make origin union cache key unique for key lists still under construction (#43339) 2021-04-05 11:47:49 -07:00
Wesley Wigham
d1b43429c2
Allow nested reverse mapped type printback (#42485)
* Optimize interning of reverse mapped types

* Style feedback

* Whitespace

* Update baseline
2021-04-05 11:37:51 -07:00
Wesley Wigham
1f1dcd60b5
When reusing input type nodes, only instantiate the type for comparison if it is a this type (#42584) 2021-04-05 11:10:47 -07:00
Wesley Wigham
f03e59ecc9
Do not covariantly mix in constraints from contravarrying positions (#43439)
* Do not covariantly mix in constraints from contravarrying positions

* Exclude keyof from constraint variance tracking

* Extra test case

* Always subtitute on type parameter types
2021-04-05 11:05:33 -07:00
Josh Goldberg
38da7c600c
Disabled 'used before initialization' error for optional properties (#43100)
* Disabled 'used before initialization' error for optional properties

* Expanded tests to include code snippet from issue
2021-04-02 10:08:10 -07:00
Wenlu Wang
62f3ccd9c0
Error if assignment after block (#41115)
* Error if assignment after block

* Update src/compiler/diagnosticMessages.json

Co-authored-by: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>

* Fix diags

* Error after block

Co-authored-by: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>
Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2021-03-31 15:57:25 -07:00
Andrew Branch
b549467368
Consider base types in isArrayLikeType (#43435)
* Types that extend Array or ReadonlyArray are automatically array-like

* Add React repro to test
2021-03-30 13:18:38 -07:00
keerthana1212
555ef73da8
Adding Diagnostic message for missing ']' and ')' in Array literal and conditional statements (#40884)
* Adding Diagnostic message for missing ']' in Array literal

* revert change on parseArrayBindingPattern

* Adding diagnostic message for if, while, do and with statements

* Extract parseExpectMatchingBrackets

Co-authored-by: Keerthana Kanakaraju <kekanaka@microsoft.com>
Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2021-03-30 13:13:57 -07:00
Ryan Cavanaugh
ff233a9ac2
Variant accessors (#42425)
Allows accessors to have different access modifiers and types

Fixes #2845, #2521
2021-03-26 20:11:02 -07:00
Wenlu Wang
41dc625b0a
Add static index signature (#37797)
* Add static index

* fix lint

* make lint happy

* adjust test cases

* add more cases

* fix changes

* Add more case

* accept baseline

* fix error if extends others

* Update vfsUtil.ts

* use equal to empty array

* static signature of interface is an error

* Accept baseline

* Check index constraints for static signature

* Accpet baseline

* Fix crash

* fix crash

* Accept baseline

* Fix regression

* Fix crash

* always return new array
2021-03-26 15:30:09 -07:00
Titian Cernicova-Dragomir
e638af7560
ES private class elements (#42458)
* Added support for private identifier methods.

* Added tests for private methods.

* Added check to only not allow private name method signatures in anything except classes.
Changes objects literal checking to not bail on first private name found in object literal.

* Added private accessors tests

* Transform private methods

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Rename shouldTransformPrivateFields

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Accept baseline

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Use a single WeakSet for brand-check

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Accept baseline

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Add a test for using private methods in static field initializers

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Add breaking checker test

Private methods inside class expressions should not error.

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Add to instances once per-instance

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Accept baseline

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* fix: evaluate receiver and rhs expressions before throwing on readonly assignment

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Add a test for evaluating rhs before readonly assignment

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Transpile private accessors

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Accept baseline

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* fix: handle readonly/writeonly accessors

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* accept baseline

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* add a test for private setter without a getter

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* fix: getAllUnscopedEmitHelpers

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* fix: better handling of duplicate names

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Fixed wrong error message for private methods in class expressions.

* change error message

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* add a test for async private methods with a higher target

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* fix: setter assignment returns rhs value

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* add a test for setter assignment return value

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* fix: handle duplicate accessors

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* add tests for duplicate accessors

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* docs: add missing parameter docs

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Fixed failing test.

* baseline-accept: ordering changes

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* fix: attach weakSetName to property declaration

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* add a test for nested private methods

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* add a test with any

Signed-off-by: Kubilay Kahveci <kahvecikubilay@gmail.com>

* Added support for static private fields accessors and methods.

* Added error message for private identifiers used with static decorators. There is no spec to go with this behavior as of yet.

* Fixed emit static bug that used private names outside of classes for initialization in esnext. Fixed issue where nested privates produce incorrect brand check.

* Added tests for private static fields methods and accessors.

* Fixed error messages and tests after merge.

* Accept new baseline.

* Improved duplicate identifier checks for static private class elements.

* Added error when using initializers with private static fields when useDefineForClassFields is not specified and target is esnext.

* Fixed code review issues.

* Removed semantically wrong emit on `useDefineForClassFields:true` with `target:esnext`

* Changed emit for uninitialized private static fields.

* Added runtime error in helper if a static private field is accessed before it was declared.

* Fixed code review comments for private identifier static class elements.

* add debug.assertNever for unknown node type (#53)

* Fixed code review issues.

* Fixed code review issues for private class elements.

* Fixes class shadowing when checking access to a private static class element.

* fix private methods/accessors in class expr inside a loop

* collapse switch case

* fix class name

* simplify getPrivateMethodsAndAccessors

* remove findPreviousAccessorInfo

* lazily create weakSetName identifier

* do not allocate a node if not needed in visitMehodDeclaration (#55)

* Removed all the emit helpers for private identifier methods accessors and modified the existing helpers for get and set fields to do the same job.

* Simplified emit for private identifier class elements.

* do not clone the receiver (#57)

* leave bad code in for #constructor and duplicate private names (#58)

* Added check for WeakSet collision.

* Added error for using a set only accessor.

* update keyof tests and ?? (#62)

* replace ?? with ||

* update keyof tests

* fix emit helpers comments

* produce an error if private field helpers are not up to date

* add tests

* fix setter-only compound assignment

* fix tests

* fix duplicated trailing comments (#64)

* clear receiver pos and setTextRange on helper calls

Co-authored-by: Kubilay Kahveci <kahvecikubilay@gmail.com>
2021-03-24 18:15:50 -07:00
Wesley Wigham
fb60c9f46e
Use last detected JSX import source pragma as canonical source, rather than first (#43351) 2021-03-23 18:02:37 -07:00
Nathan Shively-Sanders
dcc27ebaf2
@link support, second try (#43312)
* Revert "Revert "Editor support for link tag (#41877)" (#43302)"

This reverts commit 451d4354b94e533907ef3b6362a89435f67577a3.

* Fix parsing @link at end of comment

* Parse comments as string when no @link occurs

* fix lint
2021-03-22 16:39:35 -07:00
Anders Hejlsberg
fbc9c942b2
Normalize target type after null-stripping unions in relationship checks (#43202)
* Normalize target type after null-stripping

* Add regression tests
2021-03-19 09:19:25 -07:00
Nathan Shively-Sanders
451d4354b9
Revert "Editor support for link tag (#41877)" (#43302)
This reverts commit ec77bff33226fb01f4e38b20e481f8c1fcd9e6c0.
2021-03-18 14:42:25 -07:00
Nathan Shively-Sanders
ec77bff332
Editor support for link tag (#41877)
* Initial scribbles

* Compiles but provides spans instead of location pairs

Probably need to fork the services/server types and provide a conversion
with Session.toFileSpan. Not sure where to put the conversion.

* Switch to DocumentSpan

In theory this is already better supported, but not sure practise bears
that out.

* Builds w/protocol types + conversions

* cleanup:better names and scrub TODOs

* fix test harness too

* Misc

1. Simplify protocol after talking to @mjbvz.
2. Add more tests.
3. Initial notes about where to add parsing.

* Parse and store links in the compiler

The text of the link is still stored in the comment text, but that's now
kept in an object instead of just a string. Each link has the parse for
the entity reference, if there is one.

Needs lots more tests -- this just makes all the existing jsdoc tests
pass.

* more tests and some fixes

* Fix other failing tests

* fix bad merge

* polish parser

* improve names and array types

* slight tweaks

* remove some done TODOs

* more tests + resulting fixes

* add+fix cross-module tests

* Support `@see {@link`

Plus find-all-refs support equivalent to @see's.

* add server test

* Make comments actually part of the AST

* Add span for link.name in language service/protocol

* Make checker optional in getJSDocTags

Also change to JSDocCommentText from JSDocCommentComment

* Use getTokenValue instead of getTokenText

Measure twice, slice once

* Add missing support for top-level links

The language service and protocol were missing support for top-level
links. This commit adds that plumbing.

* add string back to comment type in node constructors

* Full parse of link tags and jsdoc comment text

- Doesn't pass fourslash yet, I'm going to switch to baselines for
  failures there.
- Still needs some work on the protocol to convert file+offset to
  file+line+offset.

* fix lint

* Fix missing newlines in inferFromUsage codefix

* Parse jsdoc comments as text node/link array

And switch to line+character offsets in the protocol

* Fix fourslash tests

Mostly ones that can't be baselined, but I switched a couple more over
to baselines

* Improve types and documentation

* Test+fix @link emit, scrub other TODOs

* update API baselines

* test that goto-def works with @link

* Split link displaypart into 3

One for link prefix and suffix, one for link name, and one for link
text.

* update baselines

* Provide JSDocTagInfo.text: string to full clients by default

Instead of upgrading them to displayparts.

* Real server tests

* Disambiguate {@link} and @param x {type}

They are ambiguous; previously the parser preferred the type
interpretation, but will now look ahead and parse links instead when the
prefix is `{@link`.

* Add explanatory comment in test

* fix location in richResponse in protocol

* update API baseline

* Address PR comments

1. Add a cross-file goto-def test.
2. Switch from per-message args to UserPreference.

* use arraysEqual from core
2021-03-16 16:26:01 -07:00
Wesley Wigham
2643e65da4
Add missing relationship allowing a type to be assignable to a conditional when assignable to both branches (#30639)
* Finally add that missing relationship allowing a type to be assignable to both branches of a conditional

* Explicitly write out Ternary.Maybe

* Add slightly modified example from #25413

* fix sick sentence

* Loosen check to skip false branch constraint check to consider `infer` parameters as always satisfied in the extends clause

* Simplify things a bit, only instantiate once

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2021-03-11 11:56:55 -08:00
Mateusz Burzyński
998ecd9c06
Add a test for JSX namespace lookup with jsx: preserve, jsxImportSource (#41676)
* Add a test for JSX namespace lookup with `jsx: preserve, jsxImportSource`

* updated baselines

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2021-03-11 09:07:33 -08:00
Jack Williams
3d6650eb4f
Fix #38608 (#38610)
* Fix #38608

* Work for narrowed non-unions

* Add comment
2021-03-11 07:32:49 -08:00
Oleksandr T
3c576f108c
fix(41027): handle unused static members (#41103) 2021-03-11 06:39:20 -08:00
Kagami Sascha Rosylight
f4d0ea6539
Add target: ES2021 (#41239)
* Support `target: es2020`

* use CRLF

* update symbols

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2021-03-10 13:31:25 -08:00
Oleksandr T
b1f86eca3e
fix(42265): Error accessing abstract property in constructor via destructuring (#42276) 2021-03-10 07:26:50 -08:00
Ron Buckton
ec4863cc0e
Fix37991 (#43166)
* Add failing test

* Fix tslib check errors for commonjs imports
2021-03-09 11:43:19 -08:00
Anders Hejlsberg
ba56fca0bf
Remove undefined from optional properties when inferring to index signatures (#43086)
* Remove undefined from optional properties when inferring to index signatures

* Add tests
2021-03-06 06:51:02 -08:00
Jonas Hübotter
25375a2213
Unnecessary elaboration about not being assignable to type parameters (#42952) 2021-03-05 11:15:05 -08:00
Anders Hejlsberg
408c804103
Properly instantiate inferred constraints in conditional types (#42747)
* fix combined type mapper in getConditionalType

* Add regression tests
2021-03-05 07:26:27 -08:00
Armando Aguirre
652199ace6 Added tests 2021-03-02 20:38:37 -08:00
Zen
3d1c6e8f2f
fix(42765): require should not work in ts files (#42792)
* add failing test

* fix(42765): require should not work in ts files
2021-03-02 06:54:31 -08:00
Andrew Branch
56f95d2a3f
Only filter ignored paths from module specifier generation if there exists a better option (#43024)
* Only filter ignored paths from module specifier generation if there exists a better option

* Nit
2021-03-01 16:12:03 -08:00
Daniel Rosenwasser
df5ffc0ea1
Remove special any assignability for numeric index signatures (#41660)
* Only enable special assignability rule on string index signatures to 'any'.

* Accepted baselines.

* Added test.

* Accepted baselines.

* Renamed test files.

* Add non-erroring version of bclas'subClassThisTypeAssignable01.ts'

* Accepted baselines.

Co-authored-by: TypeScript Bot <typescriptbot@microsoft.com>
2021-02-25 17:36:09 -08:00
Nathan Shively-Sanders
2c5cee59f0
Fix: checkAliasSymbol crash when checking for @deprecated (#42971)
* Fix: checkAliasSymbol crash when checking for @deprecated

It's possible that we shouldn't be creating symbol with no declarations
from non-homomorphic mapped types, but for 4.2, the right fix is to make
the @deprecated-check in checkAliasSymbol ensure that
target.declarations is defined.

* Add bug number and accept baselines
2021-02-25 16:26:16 -08:00
Anders Hejlsberg
ccdd688e4f
Properly handle duplicate enum types in type inference (#42943)
* Ensure no duplicates in named union list

* Add regression test
2021-02-25 13:54:14 -08:00
Wesley Wigham
3b35522fd0
Type lookup in getIntrinsicAttributestypeFromJsxOpeningLikeElement should match getIntrinsicTagSymbol (#42819) 2021-02-24 22:36:04 -08:00
Armando Aguirre
5c5d374b8d
Merge pull request #42904 from a-tarasyuk/fix/42339
fix(42339): "import" missing in transpiled code when variable typed as `unknown`
2021-02-24 18:25:53 -08:00
Wesley Wigham
8d58c8d90b
Base signatures resolve only the type parameters local to the signature, not all type parameters (#42703) 2021-02-23 16:17:57 -08:00
Wesley Wigham
6da262591c
Bail when comparing a specialized form of an already ongoing comparison (#42727)
* When structurally comparing similar types, check if we are already in the middle of a more general comparison of those same types

* Do the same, but with only string manipulations
2021-02-23 16:13:59 -08:00
Wesley Wigham
87d10eb055
Eliminate well known symbols as a concept in the checker and rely on unique symbols (#42543)
* Eliminate well-known symbols in the checker: 2021 edition

* Actually update the lib text to say unique symbol, too (this is unneeded with compat code in place, but this makes goto-def make more sense)

* Add test showing mismatched symbol constructor type interop

* Add more test cases for some other related issues this fixes

* Revert computed name change

* Style comments
2021-02-22 14:43:28 -08:00
Wesley Wigham
5a1d30815b
Combine multiple overloads into a single contextual signature (#42620)
* When noImplicitAny is set, combine multiple contextual overloads into a single signature, rather than producing `any` and an error

* Amalgamate intersection composite signature return types as intersections, rather than the prior exclusively union behavior

* Add another example from an issue, albeit slightly modified

* Fix newlines, add test from DT

* Interior remodelling
2021-02-22 13:34:47 -08:00
Oleksandr T
74e3ad9735 fix(42339): skip return if spread type is wrong 2021-02-21 12:27:46 +02:00
ExE Boss
0723904bfb
feat(lib/es2021): Add type parameter to FinalizationRegistry (#42274)
* feat(lib/es2021): Add type parameter to `FinalizationRegistry`

* test(lib/es2021): Add test for generic `FinalizationRegistry`
2021-02-18 16:43:36 -08:00
Josh Goldberg
c3d7a56e90
Specified diagnostic for iterating known array type without --downlevelIteration (#40070)
* Specified error message for iterating known array types without --downlevelIteration

* Added extra target info to diagnostic

* NodeList too, a classic

* PR feedback: invert to allowsStrings; required param

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2021-02-17 17:12:32 -08:00
Anders Hejlsberg
412ecbc291
Reduce void | undefined only in conjunction with subtype reduction (#42846)
* Reduce void | undefined only in conjunction with subtype reduction

* Accept new baselines

* Add regression test
2021-02-17 14:48:07 -10:00
Jack Works
bb8b9db9f7 Add error for missing await in conditionals 2021-02-16 12:00:41 -05:00
Nathan Shively-Sanders
5deb676b3a
No did-you-mean-to-call error on casts Part 2 (#42779)
* No did-you-mean-to-call error on casts

I chose to do the ad-hoc check rather than yet another tree walk.

1. It's faster to run and easier to read.
2. This error came from looking at real code. It happened twice, so I
think the best estimate for other uses that happened zero times is in
fact zero.
3. I couldn't think of other places to put the cast, given the
restrictions on `testedNode` just before the new code.

* Skip parentheses
2021-02-12 10:07:59 -08:00
Nathan Shively-Sanders
f2bcb2101b
No did-you-mean-to-call error on casts (#42626)
I chose to do the ad-hoc check rather than yet another tree walk.

1. It's faster to run and easier to read.
2. This error came from looking at real code. It happened twice, so I
think the best estimate for other uses that happened zero times is in
fact zero.
3. I couldn't think of other places to put the cast, given the
restrictions on `testedNode` just before the new code.
2021-02-12 09:36:55 -08:00
Masato Urai
a3ead92046 Improve error message for overload that takes spread arguments
The original error message on the last line I have added to in
functionParameterArityMismatch.ts was

    No overload expects 5 arguments, but overloads do exist that expect
    either 4 or Infinity arguments.

even if we do not define a function that takes Infinity arguments.

This PR changes it to this:

    Expected 0-6 arguments, but got 5 or more.

I feel it is still a bit strange but much more understandable.

Fixes #42418
2021-02-11 16:49:21 -05:00
Orta Therox
8c5fa5cc91
Revert assignability cases in getNarrowedType (#42231)
* Revert subtype narrowing changes from readonly array PRs

* Adds a test for the change

* More baselines
2021-02-09 15:03:11 -08:00
Wesley Wigham
4c43e09c9e
Add fallback error locations for nameless declarations, better class error locations (#42585) 2021-02-05 12:07:14 -08:00