Issues

• [api] Let a program created with createPrograms use content mappers

  microsoft/TypeScript#64641 · opened on Oct 5, 2026

• API server reports TS2345 for a call that tsc accepts on the same project

  microsoft/TypeScript#64635 · opened on Oct 5, 2026

• [api] Add parseConfigFileTextToJson() helper

  microsoft/TypeScript#64634 · opened on Oct 5, 2026

• [api] A nested request from a resolveModuleName callback gets another request's answer

  microsoft/TypeScript#64631 · opened on Oct 5, 2026

• [api] Static and callback module resolutions drop resolvedUsingTsExtension, raising TS2876

  microsoft/TypeScript#64630 · opened on Oct 5, 2026

• [api] createPrograms with a non-composite projectReferences entry crashes the API server

  microsoft/TypeScript#64629 · opened on Oct 5, 2026

• JSDoc @private / @protected are dropped in declaration emit for properties declared by constructor assignment

  microsoft/TypeScript#64628 · opened on Oct 4, 2026
  2

• import defer "./a.js" is accepted without an error, and the output drops defer

  microsoft/TypeScript#64627 · opened on Oct 4, 2026

• Declaration emit re-walks a package.json exports map for every declaration (module specifier cache not shared across node builders)

  microsoft/TypeScript#64625 · opened on Oct 4, 2026

• [ServerErrors][TypeScript] main vs

  microsoft/TypeScript#64623 · opened on Oct 3, 2026
  3

• [ServerErrors][JavaScript] main vs

  microsoft/TypeScript#64622 · opened on Oct 3, 2026
  4

• Non-enum CLI options with multiple values separated by comma and space aren't whitespace trimmed

  microsoft/TypeScript#64618 · opened on Oct 3, 2026

• TS 7 declaration emit writes unbound type parameters (TOutputOut, $Output) into .d.ts where 6.0 emits any

  microsoft/TypeScript#64614 · opened on Oct 3, 2026
  1

• In-memory virtual file overlay over LSP without faking didOpen

  microsoft/TypeScript#64611 · opened on Oct 2, 2026

• Associate companion files with ProjectService without Content Mappers

  microsoft/TypeScript#64610 · opened on Oct 2, 2026

• TS5115 in published Zod 4.5–4.6 types after #64372

  microsoft/TypeScript#64605 · opened on Oct 2, 2026

• Support deferred re-exports

  microsoft/TypeScript#64602 · opened on Oct 2, 2026

• npm package has "engines": ">=16.2.0" but npx tsc fails on node <20

  microsoft/TypeScript#64596 · opened on Oct 2, 2026

• Reverse-mapped inference exposes private members as public; since #63932 this rejects f<T>() as C

  microsoft/TypeScript#64593 · opened on Oct 2, 2026

• tsc -b: incremental build keeps a declaration that names a removed re-export, and passes a program a clean build rejects

  microsoft/TypeScript#64591 · opened on Oct 2, 2026

• Declaration emit writes an import the file cannot resolve when the package has exports; no TS2883

  microsoft/TypeScript#64590 · opened on Oct 2, 2026

• TS Symbol typing clashes with standard, idiomatic JS

  microsoft/TypeScript#64585 · opened on Oct 2, 2026
  2

• Info missing when hover on a proptery compare to TS6

  microsoft/TypeScript#64582 · opened on Oct 1, 2026 · Backlog

• TypeScript 7 VS Code extension: let other extensions send requests to tsc --lsp, like typescript.tsserverRequest

  microsoft/TypeScript#64580 · opened on Oct 1, 2026

• Content mappers: let a mapper opt out of formatting, so tsc --lsp does not offer a formatter that returns no edits

  microsoft/TypeScript#64579 · opened on Oct 1, 2026