microsoft / microsoft/TypeScript-TmLanguage

JS & TS tokenizers don't support regexes with the "v" flag

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Dominant language
TypeScript
Stars
471
Forks
149
PR merge metrics
No merged PRs in 30d

Description

Does this issue occur when all extensions are disabled?: Yes

  • VS Code Version: 1.87.0-insider
  • OS Version: Darwin arm64 23.4.0

Steps to Reproduce:

  1. Write const regex = /test/v; in any .(j|t)sx? file
  2. See that syntax highlighting breaks

Bildschirmfoto 2024-03-01 um 02 12 50

https://github.com/microsoft/vscode/assets/20396367/1143c919-2ee1-4573-9214-ef94e3e89eaf

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the syntax-highlighting failure with const regex = /test/v; in a .js, .ts, .jsx, or .tsx file, then inspect the repository's TypeScript TextMate grammar files. Done means regexes using the v flag retain correct syntax highlighting in the affected file types.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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