Issues

• Native API: Wtf8Decoder drops U+FEFF from string literals and template text

  microsoft/TypeScript#65458 · Filter by author mrousavy opened on Nov 12, 2026

• typescript/async: getSourceFile() returns a NumberKeyword for a typeToTypeNode() result

  microsoft/TypeScript#65457 · Filter by author mathcovax opened on Nov 12, 2026

• [Formatter] add new options for blank lines

  microsoft/TypeScript#65453 · Filter by author jmevel opened on Nov 12, 2026

• Checker crashes on yield* of a synchronous iterable containing an invalid thenable

  microsoft/TypeScript#65452 · Filter by author AkisArou opened on Nov 12, 2026

• Native API createSourceFile panics for numeric literals whose normalized text is longer than the source

  microsoft/TypeScript#65451 · Filter by author AkisArou opened on Nov 12, 2026

• 7.1 regression: TS5115 for import("cloudflare:workers") with @cloudflare/workers-types

  microsoft/TypeScript#65445 · Filter by author alon-gb opened on Nov 11, 2026
  1

• 7.0 regression: prepareRename placeholder includes quotes and brackets

  microsoft/TypeScript#65444 · Filter by author mizdra opened on Nov 11, 2026

• API: expose config include/exclude matching and supported extensions

  API Request
  microsoft/TypeScript#65443 · Filter by author mrclrchtr opened on Nov 11, 2026
  2

  

• 7.1 regression: bounded recursive types report TS5115 when inferred through a closure

  microsoft/TypeScript#65440 · Filter by author RomainLanz opened on Nov 11, 2026

• Incorrect error message when ASI errors involve a nonstandard newline

  BugGood First IssueHelp Wanted
  microsoft/TypeScript#65433 · Filter by author RyanCavanaugh opened on Nov 10, 2026 · Backlog
  3

• Native printer panics when printing JSDoc AST nodes (emitJSDocNode not implemented)

  microsoft/TypeScript#65429 · Filter by author el-j opened on Nov 10, 2026
  1

• References code lens missing on export default in the native language server

  microsoft/TypeScript#65425 · Filter by author k1tbyte opened on Nov 10, 2026

• Native API: expose inferred type arguments of a resolved signature

  microsoft/TypeScript#65424 · Filter by author darkyeg opened on Nov 10, 2026

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

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

• 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

  Suggestion
  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

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

• 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
  

• VisualStudio 2026 - Razor Class Library

  Needs More Info
  microsoft/TypeScript#65385 · Filter by author ghorner2 opened on Nov 7, 2026
  3

• 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
  1

• 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