Changelog

microsoft/typescript-go · · 17 commits

API expansion and several compiler fixes

Added a typed compiler options API, improved declaration emit and ID error placement, and fixed symlinked project reference resolution.

weswigham andrewbranch jakebailey johnfav03

Typed CompilerOptions now exposed in the native preview API (andrewbranchd472c39) The preview API now exports a real CompilerOptions type and threads it through project objects, replacing loose Record<string, unknown> usage. This makes the API safer and more self-describing for consumers integrating with compiler configuration.

Declaration emit now prefers typeof for function-valued aliases (weswighamac0c655) The emitter was taught to treat variable-assigned function expressions and arrows as eligible for typeof printback, so declaration emit can preserve more precise references instead of expanding them structurally. This improves the fidelity of emitted .d.ts output for common component-style patterns and alias chains.

Project-reference redirection works through symlinked subpaths (johnfav0374139cb) The resolver now recognizes symlinked package roots earlier when probing node_modules paths, which fixes a redirect bug for directory-index subpaths. That prevents spurious module resolution failures in symlink-heavy workspace layouts.

fswatch coalescing and callback state handling were tightened (jakebaileyeea561a) The filesystem watcher received a substantial correctness pass around event coalescing, event-ID tracking, and shared-stream behavior. This reduces missed or stale events, especially when many sibling watches are merged under recursive parents.

ts.getJSDocTags and related AST utilities were ported to native preview (andrewbranch2e33ec6) JSDoc tag parsing and helper utilities were added to the preview AST layer, including new AST types/helpers and generator updates. This broadens the surface area available to API consumers and keeps native preview aligned with the JS/TS compiler utilities.

Other misc changes

  • Moved isolated-declaration ID errors to more precise locations across accessors, parameters, classes, and expando props (3 commits).
  • Stabilized symbol table ordering in the API and fixed a remote node list inherited-method bug.
  • Cleaned up JSDoc whitespace handling and updated many quick info baselines.
  • Fixed compatibility with older @types/node and exact optional property typing.
  • Miscellaneous test/baseline churn, manual-test moves, and LSP rename cleanup.