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Backtick in a regex literal confuses the syntax highlighting

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#1,055 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
typescript
Domain
tooling

Research direction

Start by reproducing the provided TypeScript snippet in the repository's TextMate grammar used for syntax highlighting, comparing the behavior with and without the backtick in the regex literal. Trace the grammar rules that classify the regex and following template literal; done means the backtick no longer confuses highlighting while both constructs remain correctly highlighted.

Written by the indexing model from the issue text.

Description

JavaScript and TypeScript Nightly version: 5.9.0-dev.20250702

Code

function foo(value: string): void {
	const regex = /sql`/gu;

	const matches = value.matchAll(regex);
	const template = `sql\n${value}`;
}

With backtick:

Image

Without backtick:

Image

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

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First steps

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  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.

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