3 Pull requests merged by 2 people

• Update Node.js core modules

  #62201 merged Aug 11, 2025

• Bump the github-actions group with 2 updates

  #62252 merged Aug 11, 2025

• Bump github/codeql-action from 3.29.1 to 3.29.2 in the github-actions group

  #62006 merged Aug 5, 2025

7 Pull requests opened by 4 people

• Error handling test

  #62219 opened Aug 6, 2025

• Consider `as const` expressions as potentially context sensitive

  #62221 opened Aug 6, 2025

• Fix JSX attribute completion for union types containing string-like t…

  #62242 opened Aug 9, 2025

• Improve inference by not considering thisless functions to be context-sensitive

  #62243 opened Aug 9, 2025

• Check for JSDoc tags before assuming a type expression

  #62245 opened Aug 9, 2025

• Add missing whitespace after type parameter's modifiers in interactive inlay hints

  #62246 opened Aug 9, 2025

• Discard types that reduce to `never` before discriminating by discriminable items

  #62275 opened Aug 11, 2025

27 Issues closed by 5 people

• Optimize API Response Times and Implement Caching

  #62273 closed Aug 11, 2025

• Optimize Images and Implement Lazy Loading

  #62274 closed Aug 11, 2025

• Add Dark Mode Support with System-Based Auto-Switching

  #62272 closed Aug 11, 2025

• Redesign Dashboard with Customizable Widgets

  #62271 closed Aug 11, 2025

• Enhance Session Management with Auto-Logout and Concurrent Session Handling

  #62270 closed Aug 11, 2025

• Implement Two-Factor Authentication (2FA) for Sensitive Operations

  #62269 closed Aug 11, 2025

• Implement Biometric Authentication Integration

  #62268 closed Aug 11, 2025

• Implement data analytics and reporting features

  #62267 closed Aug 11, 2025

• Conduct security audit and penetration testing

  #62266 closed Aug 11, 2025

• Integrate payment processing and transfer functionality

  #62265 closed Aug 11, 2025

• Implement user authentication and authorization

  #62263 closed Aug 11, 2025

• Develop account overview and transaction history features

  #62264 closed Aug 11, 2025

• Implement data analytics and reporting features

  #62262 closed Aug 11, 2025

• Conduct security audit and penetration testing

  #62261 closed Aug 11, 2025

• Integrate payment processing and transfer functionality

  #62260 closed Aug 11, 2025

• Implement user authentication and authorization

  #62258 closed Aug 11, 2025

• Develop account overview and transaction history features

  #62259 closed Aug 11, 2025

• Enhance Control‑Flow Narrowing for never‑returning Functions Passed as Parameters

  #62235 closed Aug 11, 2025

• Missing Microsoft.TypeScript.MSBuild 5.9.x on nuget.org

  #62236 closed Aug 9, 2025

• isArray not narrowing a type variable correctly since 5.8

  #62238 closed Aug 8, 2025

• `typescript.SymbolTable` does not properly implement the ES6 Map interface

  #36699 closed Aug 8, 2025

• Inserting intersections with 'Function' while narrowing breaks code

  #26970 closed Aug 8, 2025

• CDATA markup for JSX

  #62229 closed Aug 7, 2025

• Translate JSXNamespacedName to a member expression where applicable

  #62228 closed Aug 7, 2025

• Avoid stale states and contexts in reactive frameworks

  #62227 closed Aug 7, 2025

• VSCode ignores compilerOptions until certain root file is open

  #62225 closed Aug 7, 2025

• Add CookieStore API types

  #61604 closed Aug 5, 2025

40 Issues opened by 29 people

• Declaration file emits symbol property keys without importing them

  #62257 opened Aug 11, 2025

• Typescript 5.9 can no longer derive this type, becomes 'any' instead

  #62256 opened Aug 11, 2025

• Consider clearer documentation or warnings for intentional narrowing behaviors in callbacks and after function calls

  #62255 opened Aug 11, 2025

• Option to ignore `.d.ts` or default to goToSourceDefinition

  #62254 opened Aug 11, 2025

• BigInt Literal Support in Earlier ECMAScript Versions

  #62253 opened Aug 11, 2025

• [ServerErrors][TypeScript] 6.0.0-dev.20250810 vs 5.9.2

  #62251 opened Aug 10, 2025

• [ServerErrors][JavaScript] 6.0.0-dev.20250810 vs 5.9.2

  #62250 opened Aug 10, 2025

• [NewErrors] 6.0.0-dev.20250810 vs 5.9.2

  #62249 opened Aug 10, 2025

• Generics in union should be inferred as `never` when possible

  #62248 opened Aug 10, 2025

• abstract type guard does not narrow when keyed with a unique symbol

  #62247 opened Aug 10, 2025

• JSDoc tags not parsed when a type may be present

  #62244 opened Aug 9, 2025

• checker: Default import not flagged when target has no default export (moduleResolution=bundler)”

  #62241 opened Aug 9, 2025

• Revert ts5.9 changes for Uint8Array

  #62240 opened Aug 9, 2025

• `verbatimModuleSyntax` leaves empty curly brackets in the JS output

  #62239 opened Aug 8, 2025

• JSX autocompletes as `class={}` instead of `class=""`

  #62237 opened Aug 8, 2025

• Regression in some error elaborations involving a target type mixing arrays with non-arrays

  #62234 opened Aug 8, 2025

• `EventTarget` doesnt friends with listeners callback that want to accept `CustomEvent` which inherits `Event`

  #62233 opened Aug 8, 2025

• One line import quick info hovers support increased verbosity without any additional information

  #62232 opened Aug 7, 2025

• lib.dom.ts LockManager Incorrect

  #62231 opened Aug 7, 2025

• TypeScript Language Features: `Analyzing '...' and its dependencies` takes crazy long time!

  #62230 opened Aug 7, 2025

• Interface with Required<UnionType> parameter not enforced when implementation accepts UnionType

  #62226 opened Aug 7, 2025

• `controller.byobRequest` type incorrectly says value is possibly null while `autoAllocateChunkSize` is present.

  #62224 opened Aug 7, 2025

• Circular reference error even when overridden with "as"

  #62223 opened Aug 7, 2025

• Allow subclass access to generic type parameters of base class (TOptions in Mapper<TLocal, TRemote, TOptions>)

  #62222 opened Aug 6, 2025

• `as const` breaks intra expression inference

  #62220 opened Aug 6, 2025

• Maximum call stack size exceeded

  #62218 opened Aug 6, 2025

• Return type incorrectly narrowed to intersection instead of union

  #62217 opened Aug 6, 2025

• Resolve type structure with optional properties

  #62216 opened Aug 6, 2025

• `lib.d.ts` Updates for TypeScript 6.0

  #62215 opened Aug 6, 2025

• Switch `libReplacement` to `false` by default

  #62214 opened Aug 6, 2025

• Assume `"use strict"` everywhere by default

  #62213 opened Aug 5, 2025

• Find all references does not find `import(fileName)` of the file

  #62212 opened Aug 5, 2025

• Deprecate, remove support for using `module` in place of `namespace`

  #62211 opened Aug 5, 2025

• Deprecate, remove support for import assertions

  #62210 opened Aug 5, 2025

• Remove support for `/// <reference no-default-lib />`

  #62209 opened Aug 5, 2025

• Deprecate, remove support for `/// <reference amd-module />` directives

  #62208 opened Aug 5, 2025

• Deprecate, remove support for `baseUrl`

  #62207 opened Aug 5, 2025

• Deprecate, remove `--moduleResolution classic`

  #62206 opened Aug 5, 2025

• Outline view does not show props of typescript type

  #62205 opened Aug 5, 2025

• TypeScript falls back to generic constraint instead of inferred type when object contains function properties

  #62204 opened Aug 5, 2025

59 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.

• Improve best type matching for elementwise elaborations

  #57537 commented on Aug 7, 2025 • 1 new comment

• Cannot assign Uint8Array type to Uint8Array variable created with constructor

  #61793 commented on Aug 5, 2025 • 0 new comments

• Support @class in JSDoc

  #12681 commented on Aug 12, 2025 • 0 new comments

• Error inferring types of promise function

  #17873 commented on Aug 12, 2025 • 0 new comments

• this any typed in some JS object literals

  #22058 commented on Aug 12, 2025 • 0 new comments

• Suggestion: Type annotations and interfaces for function declarations

  #22063 commented on Aug 12, 2025 • 0 new comments

• Allow extending types referenced through interfaces

  #31843 commented on Aug 12, 2025 • 0 new comments

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

  #33471 commented on Aug 12, 2025 • 0 new comments

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

  #38388 commented on Aug 12, 2025 • 0 new comments

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

  #39114 commented on Aug 12, 2025 • 0 new comments

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

  #39650 commented on Aug 12, 2025 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on Aug 12, 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 Aug 12, 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 Aug 12, 2025 • 0 new comments

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

  #42905 commented on Aug 12, 2025 • 0 new comments

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

  #43943 commented on Aug 12, 2025 • 0 new comments

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

  #46791 commented on Aug 12, 2025 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on Aug 12, 2025 • 0 new comments

• Regression in 4.8 where string union type widens to string

  #50635 commented on Aug 12, 2025 • 0 new comments

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

  #52313 commented on Aug 12, 2025 • 0 new comments

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

  #53234 commented on Aug 12, 2025 • 0 new comments

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

  #57009 commented on Aug 12, 2025 • 0 new comments

• mapped type with remapped keys unexpectedly widens type

  #57265 commented on Aug 12, 2025 • 0 new comments

• Inconsistent type inference on overloaded function types

  #57351 commented on Aug 12, 2025 • 0 new comments

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

  #57564 commented on Aug 12, 2025 • 0 new comments

• Inconsistent typechecking with require() in JS and TS

  #60032 commented on Aug 12, 2025 • 0 new comments

• Add nested call and new expressions as potential intra expression inference sites

  #54183 commented on Aug 7, 2025 • 0 new comments

• Keep returned (and yielded) literal types as const when their types using `const` type variables

  #56859 commented on Aug 11, 2025 • 0 new comments

• Fix CFA for with generic T (#62133)

  #62151 commented on Aug 10, 2025 • 0 new comments

• Support contextual type discrimination based on template literal expressions

  #62203 commented on Aug 5, 2025 • 0 new comments

• Error if command-line options are specified when a `tsconfig.json` is present

  #62197 commented on Aug 5, 2025 • 0 new comments

• package.json `exports` resolution uses fallback conditions, unlike Node

  #50762 commented on Aug 5, 2025 • 0 new comments

• Deprecate `--target es5`, make lowest target `es2015`

  #62196 commented on Aug 5, 2025 • 0 new comments

• Change default of `types` to `[]` in `tsconfig.json`

  #62195 commented on Aug 6, 2025 • 0 new comments

• Support multiple properties for JSX.ElementAttributesProperty

  #62193 commented on Aug 6, 2025 • 0 new comments

• An error occurs when passing the SourceFile node to getTypeAtLocation.

  #62190 commented on Aug 6, 2025 • 0 new comments

• Control Flow Analysis Performance Regression

  #62050 commented on Aug 6, 2025 • 0 new comments

• Form controller bricks intellsense for rest of session

  #62192 commented on Aug 6, 2025 • 0 new comments

• The parsing problem of the compiler under specific syntax combinations

  #61975 commented on Aug 6, 2025 • 0 new comments

• "Used before initialization" error false positives and negatives with optional properties

  #61785 commented on Aug 6, 2025 • 0 new comments

• [DTS] Object literal method with bigint is omitted in generated `.d.ts`, but class method works correctly

  #61769 commented on Aug 6, 2025 • 0 new comments

• `javascript.format.insertSpaceAfterOpeningAndBeforeClosingNonemptyBraces` has no effect in import autocomplete

  #57834 commented on Aug 6, 2025 • 0 new comments

• Maxinum call stack size exceeded for 5.9.x

  #62188 commented on Aug 7, 2025 • 0 new comments

• Improve inference in the presence of context-sensitive expressions

  #47599 commented on Aug 7, 2025 • 0 new comments

• compiler memory leak in 5.8.x and upwards

  #62143 commented on Aug 7, 2025 • 0 new comments

• Auto-import priority rules

  #51155 commented on Aug 7, 2025 • 0 new comments

• Proposal: new "invalid" type to indicate custom invalid states

  #23689 commented on Aug 7, 2025 • 0 new comments

• Find All References does not work with module.exports in JavaScript

  #44832 commented on Aug 7, 2025 • 0 new comments

• `@experimental` JSDoc tag, with strikethrough style (or similar) like `@deprecated` JSDoc tag

  #56808 commented on Aug 8, 2025 • 0 new comments

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

  #30511 commented on Aug 8, 2025 • 0 new comments

• Module Resolution: imports with JSON assertion should not need flag when module is esnext

  #54929 commented on Aug 8, 2025 • 0 new comments

• 6.0 Deprecation Candidates

  #54500 commented on Aug 8, 2025 • 0 new comments

• Need way to express hybrid types that are indexable for a subset of properties

  #17867 commented on Aug 9, 2025 • 0 new comments

• Service Worker typings

  #11781 commented on Aug 11, 2025 • 0 new comments

• Extend the tsc --listFiles option to specify an output file for the list

  #60966 commented on Aug 11, 2025 • 0 new comments

• “Lexical environment is not suspended” when visitEachChile

  #58020 commented on Aug 11, 2025 • 0 new comments

• Deprecate, remove less-used `--module` targets (AMD, SystemJS, UMD)

  #62199 commented on Aug 11, 2025 • 0 new comments

• Custom JSDoc type cannot be extended

  #62021 commented on Aug 11, 2025 • 0 new comments

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

  #11920 commented on Aug 12, 2025 • 0 new comments