Changelog

microsoft/typescript-go · · 13 commits

New checker APIs and better extension resolution

Added symbol and file-scoped diagnostics APIs, plus fixes for JSDoc parsing, tuple optionality, and extension TSDK resolution.

dragomirtitian Andarist mrazauskas jakebailey piotrtomiak WinterYukky mds-ant andrewbranch a-tarasyuk

Checker can now get a source file’s symbol (dragomirtitiane8359e7)

Checker.getSymbolOfSourceFile() was added with both single-file and batched overloads, returning module symbols for source files and undefined for non-modules. This is a useful new public API for consumers that need to inspect source-file symbols directly.

Diagnostics APIs now accept file arrays (dragomirtitian42c632e)

The various get*Diagnostics() methods were extended to accept either one file or a list of files, and the underlying request payload now sends files instead of a single file. That makes it cheaper and more flexible to ask for diagnostics across a targeted subset of the program.

Checker exposes fully qualified symbol names (WinterYukkye70c360)

Checker.getFullyQualifiedName() was added so callers can retrieve the dotted, module-qualified name for any symbol. This fills a common gap in symbol inspection workflows and mirrors information the compiler already knows internally.

Internal formatting API for synthesized nodes (andrewbranch6924fef)

Snapshot.internal.formatNodeForInsertion() was introduced to format synthesized AST nodes with the right indentation for a specific insertion point in a file. This is a practical new internal capability for code actions and completions that need to emit text matching local file context.

JSDoc type-source handling and declaration emit fix (a-tarasyukbc520f5)

Parser/scanner work fixed how multiline JSDoc literal types preserve and normalize their source text, including reparsed nodes and constructed reparse nodes. That also addresses a declaration-emit bug for multiline JSDoc literal types, which previously could lose the right shape or formatting.

Tuple optionality stripping fixed under EOPT (Andarist2320011)

Mapped-type instantiation now strips missing/undefined more correctly when removing optionality from tuple members under exactOptionalPropertyTypes. This is a real type-system correctness fix that changes the results of Required-style transformations in edge cases.

Hover JSDoc for mapped type properties fixed (Andarist72787a4)

Mapped-type property hover now aggregates and surfaces the right JSDoc, instead of dropping or misattributing it. This improves editor UX for type-heavy code.

Checker cache key hashing optimized (mds-ante8cf1cc)

The checker’s cache-key builder was refactored to use an inline byte buffer and one-shot hashing instead of incremental hasher writes. That is a performance-oriented internal change meant to reduce allocation and hashing overhead.

Inferred projects are kept up to date (piotrtomiak072dc1f)

The API now always updates an inferred project when one is open, tightening project-state consistency. This is a meaningful correctness fix for editor/API consumers working with open inferred projects.

macOS extension temp paths fixed (jakebaileya97ee9c)

A small path fix addresses extension temp-path handling on macOS.

TSDK resolution now handles npm aliases (jakebailey500d396)

The VS Code extension’s TSDK lookup was updated to resolve package executables through a helper that works with npm aliases, and the extension test suite was wired up to cover it.

Other misc changes

  • Added API support for StructuredType and .getNonPrimitiveType().
  • Added formatNodeForInsertion plumbing in the internal API and related completion/tracker changes.
  • Dependency/build/test updates, including a new extension test task and package script.
  • Additional API/session/proto test coverage for the new checker and diagnostics methods.