Issues

• jsx: react-jsxdev passes this to jsxDEV before super() returns

  microsoft/TypeScript#65415 · Filter by author trackoor opened on Nov 9, 2026

• CommonJS emit gives an imported function the wrong this when the callee is wrapped

  microsoft/TypeScript#65414 · Filter by author trackoor opened on Nov 9, 2026

• Downlevel for (this.#x of ...) / for (this.#x in ...) emits __classPrivateFieldGet(...) as the loop target

  microsoft/TypeScript#65413 · Filter by author trackoor opened on Nov 9, 2026

• Auto-import warm-up restarts from scratch on every keystroke while typing

  Needs Investigation
  microsoft/TypeScript#65410 · Filter by author hood opened on Nov 9, 2026
  

• Select content mapper at import level thanks to the with keyword

  microsoft/TypeScript#65404 · Filter by author nfroidure opened on Nov 9, 2026
  1

• False TS7027 and wrong narrowing when the left operand of ?? is falsy but not nullish

  microsoft/TypeScript#65402 · Filter by author cplieger opened on Nov 9, 2026
  

• Inconsistent diagnostic and misleading error span for 'override declare' (TS1040 vs TS1243)

  BugDomain: Error Messages
  microsoft/TypeScript#65399 · Filter by author ShakilUrRehman21 opened on Nov 9, 2026 · Backlog

• JSX tag and attribute names starting with # are accepted without a syntax error

  BugDomain: JSX/TSX
  microsoft/TypeScript#65396 · Filter by author elecmonkey opened on Nov 8, 2026 · Backlog

• Semantic tokens re-check files on a cold query checker after diagnostics already checked them

  Design Limitation
  microsoft/TypeScript#65386 · Filter by author hood opened on Nov 7, 2026
  1

• VisualStudio 2026 - Razor Class Library

  Needs More Info
  microsoft/TypeScript#65385 · Filter by author ghorner2 opened on Nov 7, 2026
  1

• readonly dropped from a function-valued property under a const type parameter

  microsoft/TypeScript#65380 · Filter by author trackoor opened on Nov 7, 2026

• Declaration emit writes [SymbolConstructor.iterator] as a computed key when a SymbolConstructor value is in scope

  BugDomain: Declaration Emit
  microsoft/TypeScript#65379 · Filter by author trackoor opened on Nov 7, 2026 · Backlog

• Crash on async generator that yields a thenable and another value

  BugDomain: Crashes
  microsoft/TypeScript#65378 · Filter by author trackoor opened on Nov 7, 2026 · Backlog

• Array.fromAsync mapper types unwrap promises yielded by async iterables

  microsoft/TypeScript#65374 · Filter by author dvkam opened on Nov 7, 2026

• Iterator.prototype.flatMap accepts primitive string results

  microsoft/TypeScript#65370 · Filter by author dvkam opened on Nov 7, 2026

• [ServerErrors][JavaScript] main

  microsoft/TypeScript#65368 · Filter by author typescript-automation opened on Nov 6, 2026
  3

• TS2589 in 7.1 on code that 5.9 and 6.0 accept, caused by stable union ordering (6.0 with --stableTypeOrdering does not finish)

  Not a Defect
  microsoft/TypeScript#65365 · Filter by author yusufyildiz34 opened on Nov 6, 2026
  1

• ES decorator metadata emit throws when a decorated class extends null

  microsoft/TypeScript#65363 · Filter by author yusufyildiz34 opened on Nov 6, 2026
  1

• Circular project references cause tsc --noEmit to silently skip type errors and exit successfully

  microsoft/TypeScript#65358 · Filter by author camc314 opened on Nov 6, 2026

• TypeScript 7.1: in checks always succeed for child properties on RemoteNode, breaking type narrowing

  Not a Defect
  microsoft/TypeScript#65357 · Filter by author k-taro56 opened on Nov 6, 2026
  3

• Remote declaration resolution

  Duplicate
  microsoft/TypeScript#65355 · Filter by author alshdavid opened on Nov 6, 2026
  2

• Content mappers: TS7016 suggestion for a mapped file reached through a package in node_modules

  microsoft/TypeScript#65350 · Filter by author toiroakr opened on Nov 6, 2026
  2

• Content mappers: let openProject watch a directory or glob, so a file added later reloads the mapper

  microsoft/TypeScript#65348 · Filter by author toiroakr opened on Nov 5, 2026

• Sync API on Windows: "timed out connecting to named pipe" seconds after the server process already exited

  BugDomain: API
  microsoft/TypeScript#65346 · Filter by author YevheniiKotyrlo opened on Nov 5, 2026 · Backlog
  1

• ESNext.SharedMemory still declares the removed Atomics.pause parameter

  BugDomain: lib.d.ts
  microsoft/TypeScript#65339 · Filter by author dvkam opened on Nov 5, 2026 · Backlog