TypeScript 7.1.0 Beta

Issues

• Support recent Iterator/Iterator.prototype methods in esnext (eventually es2027)

  CommittedDomain: lib.d.tsSuggestion
  microsoft/TypeScript#63700 · Filter by author DanielRosenwasser opened on Jul 31, 2026 · TypeScript 7.1.0 Beta

• --incremental: after a pnpm dependency version change, the cached run is slower than a cold run and most of the time is unattributed

  Needs Investigation
  microsoft/TypeScript#63731 · Filter by author mushan0x0 opened on Aug 7, 2026 · TypeScript 7.1.0 Beta
  2

  

• Update wiki "Using the Compiler API" for TypeScript v7

  Docs
  microsoft/TypeScript#63747 · Filter by author peterpeterparker opened on Aug 11, 2026 · TypeScript 7.1.0 Beta
  2

• Diagnostic code 8030 being incorrectly generated using JSDoc @type on a function.

  Bug
  microsoft/TypeScript#63754 · Filter by author Arashiryuu opened on Aug 17, 2026 · TypeScript 7.1.0 Beta
  4

• Go-to-type definition does not work on aliases to tuple types

  BugDomain: LS: Symbol Navigation
  microsoft/TypeScript#63762 · Filter by author DanielRosenwasser opened on Aug 19, 2026 · TypeScript 7.1.0 Beta

• tsc is not resposive to ctrl-c

  Needs Investigation
  microsoft/TypeScript#63856 · Filter by author lukesandberg opened on Jul 13, 2026 · TypeScript 7.1.0 Beta
  2

  

• wasip1: LSP over node:wasi hangs after initialize — signal watcher starves the scheduler (fix included)

  Bug
  microsoft/TypeScript#63862 · Filter by author calvinrp opened on Jul 22, 2026 · TypeScript 7.1.0 Beta
  1

  

• [ServerErrors][TypeScript] main vs

  Needs Investigation
  microsoft/TypeScript#63868 · Filter by author typescript-automation opened on Jul 30, 2026 · TypeScript 7.1.0 Beta
  19

  

• internal/ls: getContextNodeForNodeEntry returns nil for module-specifier literals (stock returns the enclosing import statement)

  Needs Investigation
  microsoft/TypeScript#63872 · Filter by author johnsoncodehk opened on Aug 3, 2026 · TypeScript 7.1.0 Beta
  

• API feature roadmap

  CommittedSuggestion
  microsoft/TypeScript#63875 · Filter by author andrewbranch opened on Aug 4, 2026 · TypeScript 7.1.0 Beta
  15

  

• [API] Narrow types of Node attributes when possible

  Needs Investigation
  microsoft/TypeScript#63877 · Filter by author Gerrit0 opened on Aug 6, 2026 · TypeScript 7.1.0 Beta
  

• [ServerErrors][TypeScript] main vs

  Needs Investigation
  microsoft/TypeScript#63878 · Filter by author typescript-automation opened on Aug 8, 2026 · TypeScript 7.1.0 Beta
  17

  

• API returns a stale SourceFile after the latest snapshot is disposed

  Needs Investigation
  microsoft/TypeScript#63890 · Filter by author dbaeumer opened on Aug 19, 2026 · TypeScript 7.1.0 Beta
  

• Wasm build

  CommittedSuggestion
  microsoft/TypeScript#63813 · Filter by author justinfagnani opened on Apr 21, 2026 · TypeScript 7.1.0 Beta
  5

  

• textDocument/diagnostic on the first-opened file in a session can silently omit real errors

  Needs Investigation
  microsoft/TypeScript#63887 · Filter by author cheruvian opened on Aug 13, 2026 · TypeScript 7.1.0 Beta
  2

  

• Crash: class-level decorator on an anonymous class panics during ES decorator emit

  Bug
  microsoft/TypeScript#63962 · Filter by author daniellockyer opened on Aug 23, 2026 · TypeScript 7.1.0 Beta

• Crash: malformed object destructuring assignment panics in class fields transform

  Bug
  microsoft/TypeScript#63963 · Filter by author daniellockyer opened on Aug 23, 2026 · TypeScript 7.1.0 Beta

• Crash: malformed super destructuring in a decorated class static block panics

  Bug
  microsoft/TypeScript#63964 · Filter by author daniellockyer opened on Aug 23, 2026 · TypeScript 7.1.0 Beta

• Crash: optional chain + tagged template panics the optional-chain transform

  Bug
  microsoft/TypeScript#63965 · Filter by author daniellockyer opened on Aug 23, 2026 · TypeScript 7.1.0 Beta
  1

• SourceFile text does not include BOM

  Needs Investigation
  microsoft/TypeScript#63850 · Filter by author acutmore opened on Jul 2, 2026 · TypeScript 7.1.0 Beta
  5

  

• Add native-preview API for capturing .d.ts emit output

  API Request
  microsoft/TypeScript#63843 · Filter by author hegrec opened on Jun 19, 2026 · TypeScript 7.1.0 Beta
  3

  

• TS5097 is not reported for require() in checked JS or for clause-less side-effect imports

  Bug
  microsoft/TypeScript#64028 · Filter by author ekazakov14 opened on Aug 26, 2026 · TypeScript 7.1.0 Beta
  

• Content mapper duplicated inlay hints

  Needs Investigation
  microsoft/TypeScript#64050 · Filter by author jasonlyu123 opened on Aug 27, 2026 · TypeScript 7.1.0 Beta
  2

  

• Go-to-definition does not work on /// <reference lib="..." /> directives

  BugDomain: LS: Symbol Navigation
  microsoft/TypeScript#64086 · Filter by author DanielRosenwasser opened on Aug 28, 2026 · TypeScript 7.1.0 Beta
  

• forEachChild is hard to use with async API

  Domain: API
  microsoft/TypeScript#64126 · Filter by author DanielRosenwasser opened on Sep 1, 2026 · TypeScript 7.1.0 Beta