Issues

• Incorrect/unhelpful error message for non-module jsx file

  BugGood First IssueHelp Wanted
  microsoft/TypeScript#64438 · Filter by author calebegg opened on Sep 24, 2026
  3

• keyof over computed property keys yields widening literal types, unlike the same object with literal keys

  Needs Investigation
  microsoft/TypeScript#64437 · Filter by author trevorade opened on Sep 24, 2026
  3

  

• TS7031 false positive for nested object binding pattern with = {} default in an annotated parameter (regression from #64043)

  Bug
  microsoft/TypeScript#64431 · Filter by author trevorade opened on Sep 24, 2026
  

• Declarations in declare global can have export modifiers

  Needs Investigation
  microsoft/TypeScript#64430 · Filter by author DanielRosenwasser opened on Sep 24, 2026 · Backlog
  1

• [api] Add back missing: setEmitFlags and addSynthetic*Comment

  API Request
  microsoft/TypeScript#64429 · Filter by author dragomirtitian opened on Sep 24, 2026
  

• tsc -b --watch doesn't rebuild when an imported file changes, unless incremental is on

  microsoft/TypeScript#64424 · Filter by author Generalsimus opened on Sep 24, 2026
  

• TypeScript 7.0.2 silently runs out of memory while typechecking a project that TypeScript 6.0.3 checks successfully

  Needs More Info
  microsoft/TypeScript#64423 · Filter by author Amatewasu opened on Sep 24, 2026
  4

• Recursive schema through a call-wrapped callback property (lazy(() => Self)) still infers any after #64311

  Possible Improvement
  microsoft/TypeScript#64420 · Filter by author ethndotsh opened on Sep 24, 2026 · Backlog
  1

• Likely nil pointer dereference during program construction

  BugCrash
  microsoft/TypeScript#64418 · Filter by author DanielRosenwasser opened on Sep 24, 2026
  

• Design Meeting Notes, 2026-09-22

  Design Notes
  microsoft/TypeScript#64399 · Filter by author DanielRosenwasser opened on Sep 22, 2026

• SyncRpcChannel reads private stdout._handle.fd, breaking the sync API on non-Node runtimes (Bun)

  Domain: APISuggestion
  microsoft/TypeScript#64387 · Filter by author cairn-intern opened on Sep 22, 2026
  2

• --incremental retains stale diagnostics when augmenting a re-exported interface

  Needs Investigation
  microsoft/TypeScript#64386 · Filter by author infomiho opened on Sep 22, 2026 · Backlog
  

• Panic in TupleNormalizer.normalize (nil currentNode) when declaration emit resolves an oversized tuple type under --noCheck

  Bug
  microsoft/TypeScript#64384 · Filter by author YuanchengJiang opened on Sep 22, 2026 · Backlog

• Content mapper: allowing document highlight result from other language-servers

  Needs Investigation
  microsoft/TypeScript#64368 · Filter by author jasonlyu123 opened on Sep 21, 2026 · TypeScript 7.1.0 Beta
  1

  

• Content mappers: more granular resolution, and default extensions in the manifest

  Domain: Content MappersNeeds Investigation
  microsoft/TypeScript#64362 · Filter by author colinhacks opened on Sep 20, 2026
  

• TypeScript 7 VS Code extension: let extensions that serve their language through content mappers opt out of the tsserver-plugin warning

  Domain: Content MappersNeeds Investigation
  microsoft/TypeScript#64356 · Filter by author leonidaz opened on Sep 20, 2026
  1

  

• checkJs skips .mjs/.cjs beside a .d.mts/.d.cts, but not .js beside a .d.ts

  BugNeeds Proposal
  microsoft/TypeScript#64312 · Filter by author ljharb opened on Sep 17, 2026
  2

• [TS7 LSP] Panic on document URI "file://" (empty path): vfs: path "tsconfig.json" is not absolute

  Needs Investigation
  microsoft/TypeScript#64300 · Filter by author chenxin-yan opened on Sep 16, 2026
  2

  

• Design Meeting Notes, 2026-09-15

  Design Notes
  microsoft/TypeScript#64290 · Filter by author DanielRosenwasser opened on Sep 15, 2026

• enhance: Add tests for premature caching of contextual parameter types

  Possible Improvement
  microsoft/TypeScript#64278 · Filter by author luchenxu73 opened on Sep 15, 2026 · Backlog
  1

• No batched getContextualType in 7.1 API

  Domain: APIIn DiscussionSuggestion
  microsoft/TypeScript#64265 · Filter by author DanielRosenwasser opened on Sep 14, 2026

• Port DirWatchSet over to TS7

  BugDomain: tsc -b
  microsoft/TypeScript#64262 · Filter by author DanielRosenwasser opened on Sep 14, 2026
  2

  

• Anonymous Symbol Properties

  Suggestion
  microsoft/TypeScript#64253 · Filter by author RonaldBunk opened on Sep 12, 2026

• Object with all context-sensitive properties requires at least one non-context-sensitive property for inference to work

  Possible Improvement
  microsoft/TypeScript#64251 · Filter by author devanshj opened on Sep 12, 2026 · Backlog
  4

• Include terminating line in folding ranges when last token has no trailing non-trivia

  Domain: LS: OutliningExperimentation NeededSuggestion
  microsoft/TypeScript#64235 · Filter by author DanielRosenwasser opened on Sep 10, 2026 · TypeScript 7.1.0 Beta