microsoft / microsoft/TypeScript-TmLanguage
Incorrect Token Scoping for defer Keyword in TypeScript 5.9 in VSCode
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- Dominant language
- TypeScript
- Stars
- 471
- Forks
- 149
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Description
Type: Bug
With the release of TypeScript 5.9, a new feature supporting the import defer functionality has been introduced. However, when using VSCode's "Developer: Inspect Editor Tokens and Scopes" to inspect the defer keyword, it is currently scoped as variable.other.readwrite.alias.ts instead of the expected import.control.defer.ts. This issue prevents the proper application of style changes using TextMate.
It seems that the defer keyword should be correctly scoped under the import.control.defer.ts range as mentioned above.
Thank you.
VS Code version: Code 1.103.0 (e3550cfac4b63ca4eafca7b601f0d2885817fd1f, 2025-08-06T21:40:10.271Z)
OS version: Darwin arm64 24.6.0
Modes:
System Info
| Item | Value |
|---|---|
| CPUs | Apple M2 Pro (10 x 2400) |
| GPU Status | 2d_canvas: enabled direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: enabled_on trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off |
| Load (avg) | 2, 2, 2 |
| Memory (System) | 16.00GB (1.27GB free) |
| Process Argv | --crash-reporter-id 02ee976f-ec4c-41ed-91a6-793656140857 |
| Screen Reader | no |
| VM | 0% |
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Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start at the TypeScript TextMate grammar entry that matches the import defer syntax and inspect how the defer token is currently scoped. Reproduce the result in VS Code 1.103.0 with Developer: Inspect Editor Tokens and Scopes, then verify that defer reports import.control.defer.ts rather than variable.other.readwrite.alias.ts.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 48/100