Insights: microsoft/TypeScript

29 Pull requests merged by 12 people

• More complete check in isConstTypeVariable

  #53341 merged Apr 1, 2023

• Explicit `undefined` return type checked similar to explicit `void` return type

  #53607 merged Apr 1, 2023

• Add baselines per root for affected file watching

  #53616 merged Mar 31, 2023

• Fix Go To Source Definition in `--moduleResolution bundler`

  #53613 merged Mar 31, 2023

• Baseline some watch related path determinations so its easy to track changes

  #53598 merged Mar 31, 2023

• Remove non-ascii characters from internal code comments

  #53608 merged Mar 31, 2023

• Ignore `allowImportingTsExtensions` in transpileModule to suppress option validation error with `noEmit`

  #53599 merged Mar 31, 2023

• Type-only auto-import improvements

  #53590 merged Mar 30, 2023

• More baselining for timeouts that make furture changes easier

  #53579 merged Mar 30, 2023

• Allow getter and setter types to be unrelated

  #53417 merged Mar 30, 2023

• Update azure-devops-node-api

  #53370 merged Mar 29, 2023

• Provide string completions within unions in indexed access types

  #53225 merged Mar 29, 2023

• More baselining for future changes

  #53564 merged Mar 29, 2023

• 🤖 Pick PR #53207 (Fixed symbol declarations for gener...) into release-5.0

  #53271 merged Mar 28, 2023

• fix(53347): Incorrect generated JS code when private (hashtag) property is used with parenthesis in left assignment

  #53434 merged Mar 28, 2023

• 🤖 Pick PR #53481 (Retry string completions from the i...) into release-5.0

  #53551 merged Mar 28, 2023

• 🤖 Pick PR #53351 (Fix subtype reduction involving typ...) into release-5.0

  #53422 merged Mar 28, 2023

• 🤖 Pick PR #53443 (Support wildcard exports in tsconfi...) into release-5.0

  #53557 merged Mar 28, 2023

• Use related spans for "implement abstract class" errors

  #48030 merged Mar 28, 2023

• Retry string completions from the inferred type by default

  #53481 merged Mar 28, 2023

• Don't capture type parameters defined inside the extraction range with "Extract to function"

  #53543 merged Mar 28, 2023

• 🤖 Pick PR #53547 (Fix double-emit in constructor) into release-5.0

  #53550 merged Mar 28, 2023

• Fix double-emit in constructor

  #53547 merged Mar 27, 2023

• Cache getConstraintOfDistributiveConditionalType

  #53358 merged Mar 27, 2023

• Fix baselines after bad merge

  #53546 merged Mar 27, 2023

• 🤖 Pick PR #53365 (Change ParamaterDecorator to allow ...) into release-5.0

  #53392 merged Mar 27, 2023

• fix(53006): generate let in namespaces for expando

  #53206 merged Mar 27, 2023

• Don't error when function has an implicit return but its return type is assignable to `undefined`

  #53490 merged Mar 27, 2023

• fix(53257): Illegal .d.ts class property definition for "constructor" generated from JavaScript

  #53266 merged Mar 27, 2023

19 Pull requests opened by 13 people

• 'Move to file' refactor

  #53542 opened Mar 27, 2023

• Reset type resolution stack when starting to compute variance

  #53549 opened Mar 27, 2023

• Improve contextual completions

  #53554 opened Mar 28, 2023

• Don't mention all the possible return types that permit no return statements

  #53560 opened Mar 28, 2023

• Emit 'export as namespace ts' in our bundled d.ts output

  #53570 opened Mar 29, 2023

• [WIP] Tweak module resolution failed lookup watching

  #53591 opened Mar 30, 2023

• Cutoff reverse mapped type recursion

  #53595 opened Mar 30, 2023

• Add quotes when renaming numerical indices

  #53596 opened Mar 30, 2023

• 🤖 Pick PR #53599 (Ignore `allowImportingTsExtensions`...) into release-5.0

  #53600 opened Mar 31, 2023

• Remove error on redundant isolatedModules/verbatimModuleSyntax combination

  #53611 opened Mar 31, 2023

• 🤖 Pick PR #53611 (Remove error on redundant isolatedM...) into release-5.0

  #53612 opened Mar 31, 2023

• Fixed an issue with spreading generic types with tuple constraints into calls

  #53615 opened Mar 31, 2023

• 🤖 Pick PR #53613 (Fix Go To Source Definition in `--m...) into release-5.0

  #53617 opened Mar 31, 2023

• Supported data URLs in core paths utilities

  #53618 opened Apr 1, 2023

• Filtered out types from import suggestions in JS files

  #53619 opened Apr 1, 2023

• Removed unnecessary use-before-define error for const enums

  #53625 opened Apr 1, 2023

• Expose getJSDocCommentsAndTags

  #53627 opened Apr 2, 2023

• Expose Signature.thisParameter

  #53628 opened Apr 2, 2023

• fix(53576): Don't remove indentations from JSDoc tag documentation

  #53631 opened Apr 2, 2023

59 Issues closed by 28 people

• Allow tools to add information about objects

  #53632 closed Apr 2, 2023

• Unions with overlapping methods with type guard returns incorrectly checked

  #53578 closed Apr 2, 2023

• 5.0: Narrowing from type-guards ignored when constructing JSX call (2604)

  #53178 closed Apr 2, 2023

• Typescript 5.0.2 does not infer type correctly with React.isValidElement

  #53348 closed Apr 2, 2023

• Assignment of incompatible types missed by the compiler in combination with generic interface with function template parameter

  #53568 closed Apr 2, 2023

• Read-only tuple or Set has wrong types in typescript/lib/lib.es2016.array.include.d.ts

  #53584 closed Apr 2, 2023

• Returned function with generic doesn't complain when provided type are incompatible

  #53610 closed Apr 2, 2023

• Suggestion︱Class﹣Property Assertion Detection from Methods in Constructor

  #53630 closed Apr 2, 2023

• Compatibility issue between dts output method and yarn's strict dependency resolution approach

  #53580 closed Apr 2, 2023

• Predicate returns never

  #53585 closed Apr 2, 2023

• Incorrect generic `infer`ence with "inherited" types

  #53623 closed Apr 1, 2023

• 5.0: const-like inference is not preserved unless a mapped type is used

  #53307 closed Apr 1, 2023

• `f<T>(a:T,b:T)` not rejects passing different `Record` types for a and b (but not when a and b are values).

  #53503 closed Apr 1, 2023

• `typeof` operator narrows output when input types are known

  #53622 closed Apr 1, 2023

• Exclude is bottlenecked by depth limit

  #53583 closed Apr 1, 2023

• type assertion "enables" re-assigning const variables

  #53582 closed Apr 1, 2023

• return type constraint in generics not working with Omit and intersections.

  #53602 closed Apr 1, 2023

• AbortController.abort(reason) doesn't use provided reason

  #53545 closed Apr 1, 2023

• Error in value of union passed as argument to function that is a property of the same union

  #53606 closed Mar 31, 2023

• Typescript treats private members of a class differently when resolving from d.ts or from a ts file

  #53558 closed Mar 31, 2023

• Generic type arguments of callbacks are not being inferred from their return values

  #53603 closed Mar 31, 2023

• String collisions are not detected when the strings come from enums

  #26604 closed Mar 31, 2023

• Mapping over overloaded functions of an interface results in overloads being dropped

  #53439 closed Mar 31, 2023

• `transform-origin` isn't recognized

  #53552 closed Mar 31, 2023

• 5.0.2 `T extends GenericType<infer InferredType>` no longer resolves as true

  #53415 closed Mar 31, 2023

• how `--moduleResolution nodenext` affect /// <reference/> import

  #53449 closed Mar 31, 2023

• TS Server fatal error: Debug Failure. Invalid cast. The supplied value [object Object] did not pass the test 'isUnaryExpression'.

  #53597 closed Mar 30, 2023

• The type returned by Array.prototype.find() is not narrowed

  #53488 closed Mar 30, 2023

• [NewErrors] 5.1.0-dev.20230326 vs 5.0.2

  #53515 closed Mar 30, 2023

• Forbid implicit types conversions for at least null and undefined.

  #53566 closed Mar 30, 2023

• Auto-import will always use the first import instead of looking for the first import of the correct kind

  #53008 closed Mar 30, 2023

• Allow setter type to be incompatible with the getter type

  #43662 closed Mar 30, 2023

• Typescript 5.0.2 new decorators incorrectly set redeclared variables to undefined instead of inheriting the parent class value

  #53588 closed Mar 30, 2023

• `bundler` moduleResolution ambient modules not resolving when omitting `.d.ts`

  #53575 closed Mar 30, 2023

• valueof Type Operator like keyof

  #53521 closed Mar 30, 2023

• Go to definition not working for typed object

  #53573 closed Mar 29, 2023

• In mapped types with key remapping, any property involving a generic type argument is dropped.

  #53357 closed Mar 29, 2023

• Generic type allows unrelated types in 5.0.2

  #53498 closed Mar 29, 2023

• Numeric enums may be not be type safe

  #53562 closed Mar 28, 2023

• Calling a function that returns never, not always triggers an unreachable code error

  #53510 closed Mar 28, 2023

• Incorrect generated JS code when private (hashtag) property is used with parenthesis in left assignment

  #53347 closed Mar 28, 2023

• `never` type in optional parameter should return more helpful type errors

  #50940 closed Mar 28, 2023

• [ServerErrors][TypeScript] undefined

  #53517 closed Mar 28, 2023

• [ServerErrors][TypeScript] 5.1.0-dev.20230327

  #53544 closed Mar 28, 2023

• Bbb

  #53556 closed Mar 28, 2023

• Use related error spans for "implement abstract class" errors

  #32848 closed Mar 28, 2023

• Autocompletion is working in TS 4.7 to 4.9 but broken/gone in TS 5

  #53475 closed Mar 28, 2023

• "Extract to function" refactoring triggers an assertion failure

  #51827 closed Mar 28, 2023

• Double Emit of Contructor when using Getter Decorators

  #53448 closed Mar 27, 2023

• verbatimModuleSyntax = true switches incremental compilation to isolatedModules = true

  #53374 closed Mar 27, 2023

• [ServerErrors][TypeScript] 5.1.0-dev.20230324

  #53494 closed Mar 27, 2023

• [NewErrors] 5.1.0-dev.20230323 vs 5.0.2

  #53474 closed Mar 27, 2023

• Class static property assigned outside of the class body becomes read-only (`--allowJs`)

  #53006 closed Mar 27, 2023

• TS2366: Function lacks ending return statement in function with `unknown` return type with implicit return on some code paths, despite `noImplicitReturns` turned off

  #53473 closed Mar 27, 2023

• Type guards with `Readonly` don't work with 5.x as they did with 4.x

  #53486 closed Mar 27, 2023

• Illegal `.d.ts` class property definition for "constructor" generated from JavaScript

  #53257 closed Mar 27, 2023

• Revisit void/unknown/undefined interactions

  #52486 closed Mar 27, 2023

• Tsconfig Extends From Base Configuration as NPM package File Not Found Error

  #53495 closed Mar 27, 2023

• Make semicolons necessary for code execution.

  #53504 closed Mar 27, 2023

34 Issues opened by 28 people

• How to publish a package that's compatible with projects using "moduleResolution": "nodenext"

  #53636 opened Apr 3, 2023

• [ServerErrors][TypeScript] 5.1.0-dev.20230402

  #53635 opened Apr 2, 2023

• [ServerErrors][JavaScript] 5.1.0-dev.20230402

  #53634 opened Apr 2, 2023

• [NewErrors] 5.1.0-dev.20230402 vs 5.0.3

  #53633 opened Apr 2, 2023

• Misleading "implementation is missing" error when param type predicate missing 'is' type

  #53629 opened Apr 2, 2023

• Symbol-keyed properties cannot be initialized within constructor if the symbol key value comes from a static property (e.g. [Symbol.iterator])

  #53626 opened Apr 2, 2023

• JSDoc callback type definition depends on code that comes after it

  #53624 opened Apr 1, 2023

• Type '[...GnericParam]["length"]' does not satisfy the constraint 'number'.(2344)

  #53621 opened Apr 1, 2023

• Error when initialising variable with generic parameter type

  #53620 opened Apr 1, 2023

• Inconsistent errors reported between tsc and VSCode (Unions across objects with method overload definitions)

  #53614 opened Mar 31, 2023

• [TSServer] Very slow semantic diagnostics and completion (7s)

  #53609 opened Mar 31, 2023

• `ts.isUrl` and `ts.pathIsAbsolute` return false for data urls

  #53605 opened Mar 31, 2023

• multiple cases with the same value are allowed in switch/case

  #53604 opened Mar 31, 2023

• When verbatimModuleSyntax: true, allow an explicit isolatedModules: true

  #53601 opened Mar 31, 2023

• Design Meeting Notes, 3/29/2023

  #53594 opened Mar 30, 2023

• Incorrect parse errors issued when linebreak is in mapped type `as` clause

  #53589 opened Mar 30, 2023

• Unassigned generic let declaration is treated as assigned when used within a nested function

  #53587 opened Mar 30, 2023

• The JS/TS language service immediately crashed 5 times

  #53592 opened Mar 30, 2023

• TS Server fatal error: Maximum call stack size exceeded

  #53593 opened Mar 30, 2023

• 5.0: An opaque type from other modules isn't inferred correctly

  #53581 opened Mar 30, 2023

• tsc does not resolve non-hoisted types by type reference directive when compilerOptions.paths is set

  #53572 opened Mar 29, 2023

• Discriminated unions failing with type intersection

  #53571 opened Mar 29, 2023

• JSDoc tag descriptions lose their indentation.

  #53576 opened Mar 29, 2023

• Rename from number literal key to string doesn't add quotes in element accesses

  #53569 opened Mar 29, 2023

• TypeScript incorrectly infers types without const assertion

  #53567 opened Mar 29, 2023

• Performance issue if many symbols are declared in repeated namespaces

  #53565 opened Mar 29, 2023

• Type '[...T]["length"]' is not assignable to type 'string | number | bigint | boolean | null | undefined'

  #53563 opened Mar 29, 2023

• Error for explicit return type with no return statements is misleading

  #53559 opened Mar 28, 2023

• vscode enters into "Initializing JS/TS Language Services" loop in our repo

  #53574 opened Mar 28, 2023

• Suggestions are not listed properly for arrays of generic type in function parameters (contextual completion)

  #53555 opened Mar 28, 2023

• [lsp] importId completion candidate should include keys of tsconfig.compilerOptions.paths

  #53553 opened Mar 28, 2023

• Smart indentation on separated elements should reuse the prior element's starting base indentation

  #53548 opened Mar 27, 2023

• Using Parameters in a class member function gets incorrect result while all parameters are optional.

  #53541 opened Mar 27, 2023

• NodeList should be generic instead of having NodeListOf

  #53540 opened Mar 27, 2023

124 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• Adds linked editing for JSX tags

  #53284 commented on Apr 3, 2023 • 20 new comments

• Extend `isTupleLikeType` to also check if `.length` is a number literal type

  #52617 commented on Mar 28, 2023 • 19 new comments

• Move to new file: handle later exports in old file

  #52979 commented on Mar 31, 2023 • 13 new comments

• TSC Regression causing crash (Heap OOM) between version 4.8.4 & 4.9.3 in large project

  #53087 commented on Mar 29, 2023 • 9 new comments

• Avoid calculating all properties of UnionOrIntersectionType when caller can exit early

  #53346 commented on Mar 28, 2023 • 9 new comments

• Interface function of arity of zero gets inferred as having two different method signatures

  #53508 commented on Mar 31, 2023 • 7 new comments

• Auto imports imports from 'react-native/types' instead of 'react-native'

  #53577 commented on Mar 31, 2023 • 6 new comments

• Design Meeting Notes, 3/24/2023

  #53500 commented on Apr 3, 2023 • 5 new comments

• fix(52828): No signature help in parameter declaration before , and )

  #52840 commented on Mar 29, 2023 • 5 new comments

• export TypingsInstaller from tsserverlibrary

  #53394 commented on Mar 31, 2023 • 5 new comments

• TypeScript incorrectly handles naughty strings in json

  #53519 commented on Mar 28, 2023 • 4 new comments

• Plugin Support for Custom Transformers

  #14419 commented on Apr 3, 2023 • 4 new comments

• TS Server fatal error: Debug Failure. Invalid cast. The supplied value [object Object] did not pass the test 'isUnaryExpression'.

  #53114 commented on Apr 3, 2023 • 4 new comments

• Bump minimum Node to 14.17, ES to 2020 for TS 5.1

  #53291 commented on Mar 27, 2023 • 4 new comments

• Allowed tuples to have both named and anonymous members

  #53356 commented on Mar 28, 2023 • 4 new comments

• Support @ts-ignore for specific errors

  #19139 commented on Mar 31, 2023 • 3 new comments

• [Regression] - Language Server fails to call into plugin from v5.0-20221108 onwards

  #51713 commented on Apr 2, 2023 • 3 new comments

• Property inherited from mixin of function type with parameter of type "this" incorrectly extends base class static side

  #53088 commented on Mar 27, 2023 • 2 new comments

• Service Worker typings

  #11781 commented on Mar 29, 2023 • 2 new comments

• Extract refactors break single-line `if` statements into two lines

  #53482 commented on Mar 29, 2023 • 2 new comments

• T.constructor should be of type T

  #3841 commented on Mar 29, 2023 • 2 new comments

• TypeScript 5.0 Iteration Plan

  #51362 commented on Mar 30, 2023 • 2 new comments

• ScrollBehavior definition is missing 'instant' for window.scrollTo

  #47441 commented on Mar 31, 2023 • 2 new comments

• VS Code TypeScript started failing with "To enable project-wide ... language features, exclude large folders..."

  #53492 commented on Mar 31, 2023 • 2 new comments

• Allow tsconfig.json when input files are specified

  #27379 commented on Mar 31, 2023 • 2 new comments

• `transpileModule` does not account for package.json `type` when ran with node16/nodenext module setting

  #53022 commented on Apr 1, 2023 • 2 new comments

• TypeScript doesn't allow event : CustomEvent in addEventListener

  #28357 commented on Apr 1, 2023 • 2 new comments

• Suggestion: Noninferential type parameter usage

  #14829 commented on Apr 2, 2023 • 2 new comments

• Feature request: allow user to merge extended arrays in tsconfig files

  #20110 commented on Apr 2, 2023 • 2 new comments

• Have a problem with constructing a type which contains an undefined as Array member. Only triggered in whole-project compile.

  #53277 commented on Apr 2, 2023 • 2 new comments

• Expression produces a union type that is too complex to represent

  #53234 commented on Apr 3, 2023 • 2 new comments

• Provide snippet completions for @param in JSDoc

  #53260 commented on Mar 30, 2023 • 2 new comments

• Mark inaccessible codefix parameter types as `any`

  #53327 commented on Mar 29, 2023 • 2 new comments

• add Intl.supportedValuesOf

  #53511 commented on Mar 28, 2023 • 2 new comments

• [Suggestion] Allow @ts-ignore at the end of the same line

  #20111 commented on Mar 27, 2023 • 1 new comment

• JSDoc: module.exports direct literal assignment not type checked

  #51819 commented on Mar 27, 2023 • 1 new comment

• JSDoc type annotations on module.exports assignments not type checked

  #47107 commented on Mar 27, 2023 • 1 new comment

• `resolution-mode` Feedback

  #49055 commented on Mar 27, 2023 • 1 new comment

• Inlay hints look awkward for callback parameters with a single parameter

  #45389 commented on Mar 27, 2023 • 1 new comment

• The inferred type of "X" cannot be named without a reference to "Y". This is likely not portable. A type annotation is necessary.

  #42873 commented on Mar 28, 2023 • 1 new comment

• Design Meeting Notes, 3/3/2023

  #53083 commented on Mar 28, 2023 • 1 new comment

• Wrong completions for discriminated unions with generic index

  #34752 commented on Mar 28, 2023 • 1 new comment

• async, await, loop, implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer.

  #36687 commented on Mar 28, 2023 • 1 new comment

• Suggestion: Allow interfaces to "implement" (vs extend) other interfaces

  #24274 commented on Mar 28, 2023 • 1 new comment

• export default type

  #41409 commented on Mar 28, 2023 • 1 new comment

• Variadic element at position does not match element in target

  #53256 commented on Mar 29, 2023 • 1 new comment

• Decorated classes in TS 5.x can't be used in the same file

  #53332 commented on Mar 29, 2023 • 1 new comment

• Add a --strictNaNChecks option, and a NaN / integer / float type to avoid runtime NaN errors

  #28682 commented on Mar 29, 2023 • 1 new comment

• Error: Type cannot be used to index type after two indexes

  #21760 commented on Mar 29, 2023 • 1 new comment

• Support `satisfies` in type declaration

  #52222 commented on Mar 29, 2023 • 1 new comment

• Support for comments inside JSDoc @example comments

  #52398 commented on Mar 29, 2023 • 1 new comment

• narrowing in switch doesn't work with non-union types

  #16976 commented on Mar 29, 2023 • 1 new comment

• Module "..." cannot be named without a reference to "..." error when decl emitting references to nested modules

  #48212 commented on Mar 29, 2023 • 1 new comment

• Improve inference in the presence of context-sensitive expressions

  #47599 commented on Mar 30, 2023 • 1 new comment

• TypeScript 5.1 Iteration Plan

  #53031 commented on Mar 30, 2023 • 1 new comment

• Implement decorator metadata proposal

  #53461 commented on Mar 30, 2023 • 1 new comment

• support control flow analysis of tagged template calls

  #51426 commented on Mar 30, 2023 • 1 new comment

• TypeScript 5.0 decorators don't work when `noUnusedParameters` is enabled and the context is unused

  #53208 commented on Mar 30, 2023 • 1 new comment

• Expose more node checking / type guard API functions for developers

  #52727 commented on Mar 30, 2023 • 1 new comment

• Range Error: Maximum call stack size exceeded while compiling our code

  #53179 commented on Mar 30, 2023 • 1 new comment

• Regression with TS 5. Type instantiation is excessively deep and possibly infinite.ts(2589)

  #53514 commented on Mar 30, 2023 • 1 new comment

• Intellisense documentation lost for remaining properties in expanded Omit<> mapped type

  #49909 commented on Mar 31, 2023 • 1 new comment

• Mapped keys do not preserve JSDoc documentation

  #50715 commented on Mar 31, 2023 • 1 new comment

• `references` are not inherited in `tsconfig.json`

  #27098 commented on Mar 31, 2023 • 1 new comment

• filter noUncheckedIndexedAccess with own property check

  #41848 commented on Mar 31, 2023 • 1 new comment

• Discriminant property type guard not applied with bracket notation

  #10530 commented on Apr 1, 2023 • 1 new comment

• Affine types / ownership system

  #16148 commented on Apr 1, 2023 • 1 new comment

• Ability to type check factory constructed source files

  #43600 commented on Apr 1, 2023 • 1 new comment

• Allow specifying exclude as a command line option

  #46005 commented on Apr 1, 2023 • 1 new comment

• Expose `textChanges.ChangeTracker` for public API

  #53399 commented on Apr 1, 2023 • 1 new comment

• Add a way to get JSDoc comment text

  #45197 commented on Apr 2, 2023 • 1 new comment

• Type alias preservation breaks when a type is created from an indexed access type

  #53496 commented on Apr 2, 2023 • 1 new comment

• Allow "T extends enum" generic constraint

  #30611 commented on Apr 2, 2023 • 1 new comment

• What’s confusing about modules?

  #51876 commented on Apr 2, 2023 • 1 new comment

• Mapped Type + Recursive Type = Type instantiation is excessively deep and possibly infinite (2589)

  #45411 commented on Apr 2, 2023 • 1 new comment

• Property is used before its initialization error is only shown during compilation when using ES2022 but is with ESNext

  #53286 commented on Apr 3, 2023 • 1 new comment

• TS4082, TS4060 occurs in a surprising way

  #42645 commented on Apr 3, 2023 • 1 new comment

• Computed import types

  #44636 commented on Apr 3, 2023 • 1 new comment

• Suggestion: an option to make --showConfig more verbose

  #33211 commented on Apr 3, 2023 • 1 new comment

• Allow `this` in constructor parameter

  #38038 commented on Apr 3, 2023 • 1 new comment

• Error in 'doChange18' during 'getCodeFixes'

  #53376 commented on Apr 3, 2023 • 1 new comment

• Error in 'processChildNode' during 'getCodeFixes'

  #53524 commented on Apr 3, 2023 • 1 new comment

• Error in 'cast' during 'getCodeFixes'

  #53377 commented on Apr 3, 2023 • 1 new comment

• Separate intersection type resolution process for publicly and non-publicly accessible mixin construct signatures

  #45810 commented on Mar 27, 2023 • 1 new comment

• Measure the variance of outer type parameters for type aliases if present

  #48294 commented on Mar 28, 2023 • 1 new comment

• add `undefined` to declaration of constructor parameter property with…

  #50494 commented on Mar 29, 2023 • 1 new comment

• Infinity & NaN Type-level Support

  #51741 commented on Mar 29, 2023 • 1 new comment

• Break Pick and Omit

  #53188 commented on Mar 31, 2023 • 1 new comment

• Silence “Cannot require an ESM file” error in type-only imports (and ImportTypeNodes)

  #53426 commented on Mar 27, 2023 • 1 new comment

• Add fallback logic for generating signatures for unions of array members

  #53489 commented on Apr 3, 2023 • 1 new comment

• Suggestion: refactor to "move to another (existing) file"

  #29988 commented on Mar 27, 2023 • 0 new comments

• Add `Intl.supportedValuesOf` enumeration to `lib.*.intl.d.ts` as support in Node.js18, and v8, and various browsers exists

  #49231 commented on Mar 28, 2023 • 0 new comments

• Infinite loop getting completions when finding preceding matching token in JSDoc

  #53476 commented on Mar 30, 2023 • 0 new comments

• in code documentation is not working upon import if function expression reuse function type

  #53424 commented on Mar 30, 2023 • 0 new comments

• JSDoc `@overload` directive drops function description comments in type declaration

  #53350 commented on Mar 30, 2023 • 0 new comments

• Improve Intl.CollatorOptions type definitions

  #53507 commented on Mar 30, 2023 • 0 new comments

• Incorrect documentation on the default value for allowSyntheticDefaultImports in https://www.typescriptlang.org/tsconfig.

  #53509 commented on Mar 30, 2023 • 0 new comments

• Readonly everything by default

  #42357 commented on Mar 30, 2023 • 0 new comments

• Decouple jsx element type from jsx factory return type and sfc return type

  #21699 commented on Apr 2, 2023 • 0 new comments

• Type JSX elements based on createElement function

  #14729 commented on Apr 2, 2023 • 0 new comments

• [Feature request]type level equal operator

  #48100 commented on Apr 3, 2023 • 0 new comments

• AudioWorkletProcessor type definition is missing

  #28308 commented on Apr 3, 2023 • 0 new comments

• JSDoc support for object literal fields

  #290 commented on Apr 3, 2023 • 0 new comments

• disallow comparing to null and undefined unless they are valid cases in strict null mode

  #11920 commented on Apr 3, 2023 • 0 new comments

• Support Intellisense for string/number literals in a widened union

  #33471 commented on Apr 3, 2023 • 0 new comments

• improper declared type cause narrow type not work when its computed type is not union.

  #39114 commented on Apr 3, 2023 • 0 new comments

• In JSDoc @type is not a type declaration, which it is much more like type conversion.

  #39650 commented on Apr 3, 2023 • 0 new comments

• Class Property Inference from Constructors fails for a simple object declared in place

  #39681 commented on Apr 3, 2023 • 0 new comments

• Hoisted function declarations should be assigned to `exports` before any `require` calls

  #39853 commented on Apr 3, 2023 • 0 new comments

• Unexpected behavior (possible bug)

  #39970 commented on Apr 3, 2023 • 0 new comments

• Support “Arbitrary module namespace identifier names”

  #40594 commented on Apr 3, 2023 • 0 new comments

• Using an optional call with `.flat()` produces incorrect types

  #41007 commented on Apr 3, 2023 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on Apr 3, 2023 • 0 new comments

• Error when trying to assign a subclass of a base class with generics to `typeof` of that base class

  #41770 commented on Apr 3, 2023 • 0 new comments

• Correctly handle generic functions (e.g.: `Object.freeze`) passed as callbacks to generic functions (e.g.: `Array.prototype.map`)

  #42862 commented on Apr 3, 2023 • 0 new comments

• Support inferring `never` as the return type in JavaScript when overriding a class method that returns `never`

  #46791 commented on Apr 3, 2023 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on Apr 3, 2023 • 0 new comments

• [NewErrors] 4.8.0-dev.20220609 vs 4.7.3

  #49460 commented on Apr 3, 2023 • 0 new comments

• Regression in 4.8 where string union type widens to string

  #50635 commented on Apr 3, 2023 • 0 new comments

• Types declared in types.d.ts not included in output of tsc --emitDeclarationOnly

  #51784 commented on Apr 3, 2023 • 0 new comments

• RFC: Consult new JSX.ElementType for valid JSX element types

  #51328 commented on Apr 2, 2023 • 0 new comments

• Creating new file from existing nodes should preserve newlines

  #53203 commented on Mar 27, 2023 • 0 new comments

• fix(53181): Overloads Are Not Generated as Expected When Using JsDocOverload Tag to Declare Overloads of Functions Assigned to a Prototype

  #53317 commented on Apr 2, 2023 • 0 new comments

• Ensure findPrecedingToken recurses into JSDoc children when needed

  #53487 commented on Mar 27, 2023 • 0 new comments