2 Releases published by 1 person

• v5.8-rc TypeScript 5.8 RC

  published Feb 28, 2025

• v5.8.2 TypeScript 5.8

  published Feb 28, 2025

7 Pull requests merged by 6 people

• Bump the github-actions group with 2 updates

  #61333 merged Mar 3, 2025

• Ban old-style type assertions under erasableSyntaxOnly

  #61244 merged Feb 28, 2025

• LEGO: Pull request from lego/hb_5378966c-b857-470a-8675-daebef4a6da1_20250227204102665 to main

  #61315 merged Feb 27, 2025

• lib.es2017: Move SharedArrayBuffer[Symbol.species] onto constructor interface

  #61271 merged Feb 26, 2025

• Fixed accidentally reused comments between files in the emitter

  #61261 merged Feb 26, 2025

• 🤖 Pick PR #61210 (Fix mistakenly disallowed default e...) into release-5.8

  #61237 merged Feb 26, 2025

• LEGO: Pull request from lego/hb_5378966c-b857-470a-8675-daebef4a6da1_20250225202237529 to main

  #61269 merged Feb 25, 2025

8 Pull requests opened by 7 people

• 🤖 Pick PR #61261 (Fixed accidentally reused comments ...) into release-5.8

  #61290 opened Feb 26, 2025

• Restrict indexed accesses on nonpublic fields of concrete types the same way we do generic ones

  #61291 opened Feb 26, 2025

• Fix the issue where modifying `extraFileExtensions` through `ProjectService.setHostConfiguration` in the plugin has no effect.

  #61303 opened Feb 27, 2025

• Handle `silentNeverType` in iteration-related functions

  #61317 opened Feb 28, 2025

• 🤖 Pick PR #61244 (Ban old-style type assertions under...) into release-5.8

  #61320 opened Feb 28, 2025

• Update deps, TS 5.8, others

  #61340 opened Mar 3, 2025

• Rename type parameters when they are shadowed.

  #61342 opened Mar 3, 2025

• feat(47595): allow using private fields in type queries

  #61343 opened Mar 3, 2025

26 Issues closed by 9 people

• The typescript language service does not interpret "this" in object literals correctly.

  #61222 closed Mar 4, 2025

• [ServerErrors][TypeScript] 5.9.0-dev.20250302 vs 5.8.2

  #61331 closed Mar 3, 2025

• [ServerErrors][JavaScript] 5.9.0-dev.20250302 vs 5.8.2

  #61328 closed Mar 3, 2025

• [NewErrors] 5.9.0-dev.20250302 vs 5.8.2

  #61327 closed Mar 3, 2025

• JSX types should automatically pick setter types instead of getter types.

  #61329 closed Mar 3, 2025

• Object Spread { ...array } Incorrectly Assignable to number[]

  #61295 closed Mar 2, 2025

• #61082 breaks @uswds/uswds deep module resolution in DT

  #61322 closed Feb 28, 2025

• Allow using types defined inside function body in the function's signature

  #61245 closed Feb 28, 2025

• Output JSON AST directly from tsc

  #61260 closed Feb 28, 2025

• tsserver plugin initialization race? typescript-plugin-css-modules and typescript-plugin-yaml don't work together

  #61231 closed Feb 28, 2025

• Sometimes, `keyof any` is `string`

  #61203 closed Feb 28, 2025

• Allow `allowImportingTsExtensions`: without either '--noEmit' or '--emitDeclarationOnly'

  #61213 closed Feb 28, 2025

• Wrong local variable type when assigned in lambda.

  #61313 closed Feb 27, 2025

• Extends in typescript get unexpect result

  #61293 closed Feb 27, 2025

• Warn when tsconfig.json extends a file that contains `references`

  #61223 closed Feb 27, 2025

• Inconsistent inferred type predicate for filter

  #61182 closed Feb 27, 2025

• Potentially misleading documentation for the `types` TSConfig option

  #61256 closed Feb 27, 2025

• About the typeof ES6 import expression

  #61241 closed Feb 27, 2025

• Tuple inference widening when function literals are included in tuple literals

  #61228 closed Feb 27, 2025

• Array.prototype.find does not narrow return type

  #61238 closed Feb 27, 2025

• Unexpected Auto-Completion Behavior in Type Inference

  #61247 closed Feb 27, 2025

• A solution to `Property of exported anonymous class type may not be private or protected.`

  #61249 closed Feb 27, 2025

• `nodenext` module resolution should turn off extension substitution

  #61251 closed Feb 27, 2025

• Reused nodes leak comment ranges for other files, leading to bad declaration emit

  #61239 closed Feb 26, 2025

• InstanceType<BigIntConstructor> fails with a compilation error and doesn't result in a bigint, as it's supposed to

  #61272 closed Feb 26, 2025

• TypeScript incorrectly detects nullable when using Required operator

  #61275 closed Feb 26, 2025

23 Issues opened by 22 people

• Intersection for same key read-only property maybe wrong

  #61344 opened Mar 4, 2025

• JSX types should automatically pick setter types instead of getter types.

  #61341 opened Mar 3, 2025

• JSDoc type is not narrowing a union (but typescript does)

  #61339 opened Mar 3, 2025

• Unresolved generic type arguments end up in type declarations since 5.7.2

  #61338 opened Mar 3, 2025

• TS 5.8: False positives for conditional expression in return type check

  #61337 opened Mar 3, 2025

• Type order is random in hover highlight dialog

  #61336 opened Mar 3, 2025

• Assigning window.location after 5.8.2 upgrade fails

  #61335 opened Mar 3, 2025

• 5.8.2 generates incorrect d.ts for generics in static method

  #61334 opened Mar 3, 2025

• Incorrect type narrowing for tuples

  #61332 opened Mar 2, 2025

• Support for `JSON.rawJSON()`

  #61330 opened Mar 2, 2025

• `export import` of types is not allowed in namespaces when using `erasableSyntaxOnly`

  #61326 opened Mar 1, 2025

• Support for Import Maps

  #61325 opened Mar 1, 2025

• Class satisfies type

  #61324 opened Mar 1, 2025

• Suggestion: Support readonly interfaces in `getSuggestedLibFor...`

  #61323 opened Mar 1, 2025

• Add types for RegExp.escape

  #61321 opened Feb 28, 2025

• Spurious missing `Symbol.iterator` on `never` when `yield*`ing generic call within a generic call

  #61318 opened Feb 28, 2025

• Auto import does not work if installed as `devDependencies`

  #61319 opened Feb 28, 2025

• dynamic import from module=none of an module=es2022 via barrel reemits it as commonjs

  #61316 opened Feb 28, 2025

• checker.getSuggestionDiagnostics fails with `TypeError: Cannot read properties of undefined (reading 'parent')`

  #61314 opened Feb 27, 2025

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

  #61302 opened Feb 27, 2025

• strange interaction with `resolveJsonModule`, `createRequire`, naming it `require`, and requiring JSON

  #61292 opened Feb 26, 2025

• Slow compilation with nested optional chaining

  #61273 opened Feb 26, 2025

• Error "Class name cannot be 'Object' when targeting ES5 with module CommonJS." when not targeting es5

  #61270 opened Feb 25, 2025

75 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.

• Walk all outer expression kinds before comitting to the return type of a symbol call

  #61071 commented on Feb 27, 2025 • 6 new comments

• fix(61258): Renaming namespace with const enum doesn't update enum references

  #61263 commented on Mar 1, 2025 • 3 new comments

• Add the type of Intl.DurationFormat to the lib.

  #60646 commented on Mar 2, 2025 • 1 new comment

• Implement(60881): Added detailed diagnostic for parent to child assignment

  #61145 commented on Feb 25, 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 4, 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 4, 2025 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on Mar 4, 2025 • 0 new comments

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

  #39650 commented on Mar 4, 2025 • 0 new comments

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

  #39114 commented on Mar 4, 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 4, 2025 • 0 new comments

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

  #33471 commented on Mar 4, 2025 • 0 new comments

• Allow extending types referenced through interfaces

  #31843 commented on Mar 4, 2025 • 0 new comments

• Suggestion: Type annotations and interfaces for function declarations

  #22063 commented on Mar 4, 2025 • 0 new comments

• this any typed in some JS object literals

  #22058 commented on Mar 4, 2025 • 0 new comments

• Error inferring types of promise function

  #17873 commented on Mar 4, 2025 • 0 new comments

• Support @class in JSDoc

  #12681 commented on Mar 4, 2025 • 0 new comments

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

  #11920 commented on Mar 4, 2025 • 0 new comments

• `// @ts-mutate` decorator/directive

  #61179 commented on Mar 3, 2025 • 0 new comments

• Inherited typing for class property initializers

  #10570 commented on Mar 3, 2025 • 0 new comments

• Talk about Exceptions Here

  #56365 commented on Mar 3, 2025 • 0 new comments

• Allow leading underscore for types to bypass noUnusedLocals warning

  #58561 commented on Feb 27, 2025 • 0 new comments

• Fixed single signature type instantiations leaking between calls with different mappers

  #59972 commented on Mar 2, 2025 • 0 new comments

• Experiment: Always report `useDefineForClassFields`-related errors even when disabled

  #59623 commented on Feb 25, 2025 • 0 new comments

• Use iterators to avoid calculating all properties of UnionOrIntersectionType

  #53346 commented on Mar 1, 2025 • 0 new comments

• TypeScript 5.8 Iteration Plan

  #61023 commented on Mar 4, 2025 • 0 new comments

• Discriminated union parameter destructuring doesn't work if the fields have defaults

  #50139 commented on Mar 4, 2025 • 0 new comments

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

  #42905 commented on Mar 4, 2025 • 0 new comments

• Inconsistent typechecking with require() in JS and TS

  #60032 commented on Mar 4, 2025 • 0 new comments

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

  #57564 commented on Mar 4, 2025 • 0 new comments

• Inconsistent type inference on overloaded function types

  #57351 commented on Mar 4, 2025 • 0 new comments

• mapped type with remapped keys unexpectedly widens type

  #57265 commented on Mar 4, 2025 • 0 new comments

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

  #57009 commented on Mar 4, 2025 • 0 new comments

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

  #53234 commented on Mar 4, 2025 • 0 new comments

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

  #52313 commented on Mar 4, 2025 • 0 new comments

• Regression in 4.8 where string union type widens to string

  #50635 commented on Mar 4, 2025 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on Mar 4, 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 4, 2025 • 0 new comments

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

  #43943 commented on Mar 4, 2025 • 0 new comments

• "The inferred type of X cannot be named without a reference to Y" (TS2742) still happens, when working with npm link to link packages manually

  #58914 commented on Feb 27, 2025 • 0 new comments

• Reverse mapped types don't use their constraint types when no candidates are present unlike the regular type parameters

  #56241 commented on Feb 27, 2025 • 0 new comments

• VSCode auto-import ignores typescript.preferences.importModuleSpecifierEnding when using a path from the package.json imports

  #60423 commented on Feb 26, 2025 • 0 new comments

• Inline *_base declaration in d.ts files

  #59550 commented on Feb 26, 2025 • 0 new comments

• Resolve deferred conditional types to their `true` branch when instantiated with a type parameter constrained to the tested type

  #52144 commented on Feb 26, 2025 • 0 new comments

• Types `number` and explicitly constrained `T extends unknown` shouldn't be comparable

  #32814 commented on Feb 26, 2025 • 0 new comments

• `Element.getElementsByTagName` marked as deprecated

  #61264 commented on Feb 26, 2025 • 0 new comments

• Proposal for merging array or object options in tsconfig file

  #57486 commented on Feb 26, 2025 • 0 new comments

• Force Override Declarations Types

  #36146 commented on Feb 26, 2025 • 0 new comments

• Typescript Watch - Cleaning Target Files on Source Deletion

  #16057 commented on Feb 26, 2025 • 0 new comments

• Path alias with trailing slash not resolving

  #61230 commented on Feb 26, 2025 • 0 new comments

• Support source phase imports

  #61216 commented on Feb 26, 2025 • 0 new comments

• SUGGESTION: add support for writeonly properties on interfaces

  #21759 commented on Feb 25, 2025 • 0 new comments

• Object.defineProperty(variable) does not error in `.js` files if `variable` does not exist

  #61165 commented on Feb 25, 2025 • 0 new comments

• Intl.Segments.prototype.containing should include undefined in return value

  #61235 commented on Feb 25, 2025 • 0 new comments

• Autocompletion of Template Literal Types with unresolved types.

  #61217 commented on Feb 25, 2025 • 0 new comments

• `IDBObjectStore` `keyPath` missing `null` type.

  #61209 commented on Feb 25, 2025 • 0 new comments

• Allow `accessor` properties in `.d.ts` even when targeting ES5

  #61181 commented on Feb 25, 2025 • 0 new comments

• Ability to pick setter types (instead of getter types) in a mapped type

  #60162 commented on Mar 3, 2025 • 0 new comments

• Type containing templated, branded string is not assignable to itself

  #61098 commented on Mar 3, 2025 • 0 new comments

• Allow --build with Intermediate Errors - shouldn't happen on tsconfig errors

  #59867 commented on Mar 3, 2025 • 0 new comments

• [Feature Request] Allow Class Index Signatures to be mapped

  #49509 commented on Mar 3, 2025 • 0 new comments

• Regression performance compiling types in version 5.4.2

  #57710 commented on Mar 3, 2025 • 0 new comments

• Seeking Guidance: Significant performance regression within editor when upgrading typescript versions in large monorepo

  #60311 commented on Mar 3, 2025 • 0 new comments

• TypeScripts Type System is Turing Complete

  #14833 commented on Mar 2, 2025 • 0 new comments

• Feature Request: allow exclusion of node_modules when skipLibCheck is false

  #30511 commented on Mar 1, 2025 • 0 new comments

• Provide way to link to other files from JSDoc comments

  #47718 commented on Mar 1, 2025 • 0 new comments

• Exact Types

  #12936 commented on Mar 1, 2025 • 0 new comments

• TS hangs up entire computer, type of variables stuck at "Loading..."

  #58373 commented on Mar 1, 2025 • 0 new comments

• Suggestion for Dependent-Type-Like Functions: Conservative Narrowing of Generic Indexed Access Result Type

  #33014 commented on Feb 28, 2025 • 0 new comments

• Relate control flow to conditional types in return types

  #33912 commented on Feb 28, 2025 • 0 new comments

• Computed property type is invalid in type emitted if it is a unique symbol coming from a property that has a space in the name

  #60823 commented on Feb 28, 2025 • 0 new comments

• A mixin class must have a constructor with a single rest parameter of type 'any[]'.

  #37142 commented on Feb 28, 2025 • 0 new comments

• HTMLImageElement#crossOrigin should use literal union type from allowable values

  #39829 commented on Feb 27, 2025 • 0 new comments

• Support type inference for Symbol keys on function

  #61214 commented on Feb 27, 2025 • 0 new comments

• Trade-offs in Control Flow Analysis

  #9998 commented on Feb 27, 2025 • 0 new comments

• Feature: Analyze @throws tags

  #31329 commented on Feb 27, 2025 • 0 new comments