2 Pull requests merged by 2 people

• Fix lib.includes('dom') check in containerSeemsToBeEmptyDomElement

  #61481 merged Mar 25, 2025

• Bump the github-actions group with 4 updates

  #61474 merged Mar 24, 2025

4 Pull requests opened by 4 people

• Add new release publisher yaml

  #61491 opened Mar 26, 2025

• Expandable hover

  #61492 opened Mar 27, 2025

• Support trailing commas in `typeof import()`

  #61495 opened Mar 27, 2025

• Fix IsolatedDeclarations annotations can duplicate comments

  #61497 opened Mar 28, 2025

30 Issues closed by 12 people

• disallow impossible type predicates (or give them a type other than `never`)

  #61502 closed Mar 28, 2025

• TypeScript 5.7 Iteration Plan

  #59905 closed Mar 28, 2025

• TypeScript 5.6 Iteration Plan

  #59250 closed Mar 28, 2025

• TS has no way to import native modules with ESM syntax

  #61486 closed Mar 28, 2025

• Hide type args when hinting a type nested in a namespace of the same name as a generic type.

  #61499 closed Mar 28, 2025

• Type inference for for..in loop as keyof object

  #61498 closed Mar 28, 2025

• Many HTML entities are not turned to Unicode by JSX

  #61494 closed Mar 27, 2025

• `T extends unknown` is observably-different from an unconstrained `T`

  #61242 closed Mar 27, 2025

• Regression in the way optional properties behave when there's an error in the property value

  #61382 closed Mar 27, 2025

• TS complains about assignability instead of narrowing

  #61465 closed Mar 27, 2025

• Can't index an object literal despite 'in'

  #61471 closed Mar 27, 2025

• Infer "stringable" or "numerable" objects without explicit declaration

  #61477 closed Mar 27, 2025

• [Feedback needed] Collaboration analysis for TypeScript

  #61487 closed Mar 26, 2025

• Enum reverse mapping is not generated

  #61488 closed Mar 26, 2025

• Should erasableSyntaxOnly prevent `const enum`s?

  #61490 closed Mar 26, 2025

• `containerSeemsToBeEmptyDomElement` does not check correctly for lib.dom.d.ts

  #61466 closed Mar 25, 2025

• Official archived version of the TypeScript Language Specification?

  #61485 closed Mar 25, 2025

• Inconsistent type inference in Promise chains between `await` and `.then()`

  #61475 closed Mar 25, 2025

• [ServerErrors][TypeScript] 5.9.0-dev.20250323 vs 5.8.2

  #61473 closed Mar 24, 2025

• [ServerErrors][JavaScript] 5.9.0-dev.20250323 vs 5.8.2

  #61472 closed Mar 24, 2025

• [NewErrors] 5.9.0-dev.20250323 vs 5.8.2

  #61470 closed Mar 24, 2025

• [NewErrors] 5.9.0-dev.20250316 vs 5.8.2

  #61432 closed Mar 24, 2025

• auto-import with `package.json#imports` does not take `moduleResolution` into account

  #60405 closed Mar 24, 2025

• require("path") does not have types for exports in .ts files

  #61468 closed Mar 24, 2025

• RegExMatchArray.groups does not allow an undefined value

  #61476 closed Mar 24, 2025

• Narrowing with `in` keyword and `const` identifier

  #61463 closed Mar 24, 2025

• Generic function constraints degrade in conditionas but work in higher order functions

  #61364 closed Mar 23, 2025

• TypeScript 5.5+ declaration of AbortSignal conflicts with Node.js v14 types

  #61447 closed Mar 23, 2025

• Class satisfies type

  #61324 closed Mar 23, 2025

• Records should not be assignable to Partial Records of incompatible types

  #61456 closed Mar 23, 2025

14 Issues opened by 12 people

• Covariant generic parameters fail unification

  #61503 opened Mar 28, 2025

• [isolatedDeclarations] Optional parameter properties are unnecessarily disallowed in isolatedDeclarations mode

  #61501 opened Mar 28, 2025

• Broken Autocomplete and Type Display For Parameters Dependent on Transitively Contextually Typed Return Type

  #61500 opened Mar 28, 2025

• Never-initialized variable type is not narrowed to undefined

  #61496 opened Mar 27, 2025

• Compiler crash with RangeError: Map maximum size exceeded

  #61493 opened Mar 27, 2025

• Trailing comma in dynamic import should be allowed also when used in a `typeof` type

  #61489 opened Mar 26, 2025

• "Find All References" shows all interface implementations instead of specific class method references

  #61484 opened Mar 25, 2025

• The type in Ternary Operator give a wrong value

  #61483 opened Mar 25, 2025

• Union of classes with same structure collapsed, leading to missing type errors

  #61482 opened Mar 25, 2025

• AllowSharedBufferSource definition is incorrect

  #61480 opened Mar 24, 2025

• RFC: `brand` Keyword for Structural Branded Types

  #61479 opened Mar 24, 2025

• RFC: Enhancing Type Aliases with `mut type` to Unify Type Definitions in TypeScript

  #61478 opened Mar 24, 2025

• Wrong import attribute typed as any, but should be typed as string

  #61469 opened Mar 23, 2025

• Explicit target type breaks generic parameter inference for function call with intersection return type

  #61467 opened Mar 23, 2025

65 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.

• Conditional type evaluation of type aliases produces different result than their equivalent substitution

  #48070 commented on Mar 22, 2025 • 0 new comments

• Allow wrapped values to be used in place of primitives.

  #2361 commented on Mar 23, 2025 • 0 new comments

• Show unused public properties and methods

  #29293 commented on Mar 23, 2025 • 0 new comments

• Find All References fails for CommonJS named exports in checkJs Mode

  #60094 commented on Mar 23, 2025 • 0 new comments

• Add option to include default typeRoots when overriding typeRoots

  #30855 commented on Mar 24, 2025 • 0 new comments

• Support for `JSON.rawJSON()`

  #61330 commented on Mar 24, 2025 • 0 new comments

• Proposal: Partial Type Argument Inference

  #26242 commented on Mar 24, 2025 • 0 new comments

• Missing compiler error (or emit bug) in another isolatedModules + emitDecoratorMetadata use case

  #61411 commented on Mar 24, 2025 • 0 new comments

• Narrow object property indexed by bracket notation when the key is a known literal type, regardless of where the key comes from

  #61176 commented on Mar 24, 2025 • 0 new comments

• Poor type inference for `reduce`

  #25454 commented on Mar 24, 2025 • 0 new comments

• Error: Debug Failure. False expression.

  #52952 commented on Mar 24, 2025 • 0 new comments

• Template Literal Type JSX children prop issue

  #58799 commented on Mar 25, 2025 • 0 new comments

• Accept de-structured elements in type predicates

  #41173 commented on Mar 25, 2025 • 0 new comments

• Date.prototype.toJSON has incorrect return type

  #43639 commented on Mar 25, 2025 • 0 new comments

• Add types for `String.{matchAll,replaceAll}` with a well known symbol

  #61448 commented on Mar 26, 2025 • 0 new comments

• Support Expandable Quick Info/Hover Verbosity

  #59029 commented on Mar 27, 2025 • 0 new comments

• Type safety with `TemplateStringsArray` and tag functions

  #33304 commented on Mar 27, 2025 • 0 new comments

• `T` is not assignable to `SomeType | Exclude<T, SomeType>` where `T` is a generic union type

  #61446 commented on Mar 27, 2025 • 0 new comments

• Spread operator should not have worse ergonomics than `apply` - unexpected error spreading a union-of-tuples

  #49802 commented on Mar 27, 2025 • 0 new comments

• Using intersection types breaks type inference for function types

  #61417 commented on Mar 27, 2025 • 0 new comments

• Add initializer property to JSDocParameterTag node

  #61373 commented on Mar 27, 2025 • 0 new comments

• Module resolution: Full Node.js 23+ TS support

  #61355 commented on Mar 27, 2025 • 0 new comments

• Introduce `strictCustomConditions` option for custom `exports` / `imports` conditions with no fallback to other conditions if the file does not exist

  #61363 commented on Mar 27, 2025 • 0 new comments

• Implicitly typed parameters of function properties of generic parameters break autocompletion

  #46916 commented on Mar 28, 2025 • 0 new comments

• On hover (e.g. in VS Code): namespaces are presented as a generic type when they share a name with the generic type

  #55582 commented on Mar 28, 2025 • 0 new comments

• Memory Leak / Infinite Recursion. TS hangs, TSC never finishes, VSCode and Intellisense dies.

  #56081 commented on Mar 28, 2025 • 0 new comments

• References from dynamic imports not recognized when indirectly exporting variable

  #61366 commented on Mar 28, 2025 • 0 new comments

• Module resolution: `"node"` condition does not work when using `moduleResolution=bundler`

  #61357 commented on Mar 28, 2025 • 0 new comments

• require() is generated in JS although there's no runtime code

  #61395 commented on Mar 28, 2025 • 0 new comments

• TS 5.8 TypeError: Cannot read properties of undefined (reading 'kind')

  #61351 commented on Mar 28, 2025 • 0 new comments

• using `projectService.setHostConfiguration` in a plugin is invalid

  #61302 commented on Mar 28, 2025 • 0 new comments

• `// @ts-mutate` decorator/directive

  #61179 commented on Mar 28, 2025 • 0 new comments

• Failed type check in monorepo project.

  #61200 commented on Mar 28, 2025 • 0 new comments

• Mixins created from `obj.constructor` cannot have members

  #61255 commented on Mar 28, 2025 • 0 new comments

• BUG: TypeScript: `this.constructor` inside instance method (not `static`) inside `class` doesnt work in autocomplete

  #61356 commented on Mar 29, 2025 • 0 new comments

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

  #11920 commented on Mar 29, 2025 • 0 new comments

• Support @class in JSDoc

  #12681 commented on Mar 29, 2025 • 0 new comments

• Error inferring types of promise function

  #17873 commented on Mar 29, 2025 • 0 new comments

• this any typed in some JS object literals

  #22058 commented on Mar 29, 2025 • 0 new comments

• Suggestion: Type annotations and interfaces for function declarations

  #22063 commented on Mar 29, 2025 • 0 new comments

• Allow extending types referenced through interfaces

  #31843 commented on Mar 29, 2025 • 0 new comments

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

  #33471 commented on Mar 29, 2025 • 0 new comments

• Implicit Symbol.iterator call in for..of loops / spread destructuring doesn't infer `this` generic type parameter

  #38388 commented on Mar 29, 2025 • 0 new comments

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

  #39114 commented on Mar 29, 2025 • 0 new comments

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

  #39650 commented on Mar 29, 2025 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on Mar 29, 2025 • 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 Mar 29, 2025 • 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 Mar 29, 2025 • 0 new comments

• Broken emit when `Infinity` or `‑Infinity` ends up in a type position

  #42905 commented on Mar 29, 2025 • 0 new comments

• Typescript 4.2.x - incorrectly infered generic return type of a record union (extra undefined)

  #43943 commented on Mar 29, 2025 • 0 new comments

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

  #46791 commented on Mar 29, 2025 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on Mar 29, 2025 • 0 new comments

• Regression in 4.8 where string union type widens to string

  #50635 commented on Mar 29, 2025 • 0 new comments

• Order of ReadonlySet/ReadonlyMap in union causes differing key inference

  #52313 commented on Mar 29, 2025 • 0 new comments

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

  #53234 commented on Mar 29, 2025 • 0 new comments

• Crash when defining `Array` type via `[]` syntax

  #57009 commented on Mar 29, 2025 • 0 new comments

• mapped type with remapped keys unexpectedly widens type

  #57265 commented on Mar 29, 2025 • 0 new comments

• Inconsistent type inference on overloaded function types

  #57351 commented on Mar 29, 2025 • 0 new comments

• Error not issued when global type is an alias of an object type literal

  #57564 commented on Mar 29, 2025 • 0 new comments

• Inconsistent typechecking with require() in JS and TS

  #60032 commented on Mar 29, 2025 • 0 new comments

• Expose design-time type information in TC39 decorator metadata when `emitDecoratorMetadata: true`

  #57533 commented on Mar 29, 2025 • 0 new comments

• More specific TemplateStringsArray type for tagged templates

  #49552 commented on Mar 26, 2025 • 0 new comments

• fix(59769): remapped properties ObjectLiteralMethodSnippet completion fixup

  #59770 commented on Mar 26, 2025 • 0 new comments

• Fixed nullish coalesce operator's precedence

  #61372 commented on Mar 24, 2025 • 0 new comments

• Improve references search and quick info on properties with type errors within nullable contextual types

  #61383 commented on Mar 24, 2025 • 0 new comments