Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Wrong color in JSDoc when using extends from a class having multiple generic parameter

Open
#993 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
52/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
typescript
Domain
tooling

Research direction

Start with the TypeScript TextMate grammar rules responsible for JSDoc @extends directives and reproduce the example in an editor using the repository's grammar. Trace the generic parameter handling after the comma; done means the entire @extends Base<T, U> directive keeps the intended color.

Written by the indexing model from the issue text.

Description

The color is wrong on the extends directive after the comma

/**
 * @extends Base<T, U>
 *///               ^ from here on
/**
 * @template T
 * @template U
 */
class Base {}

/**
 * @template T
 * @template U
 * @extends Base<T, U>
 */
class Derived extends Base {}
Dominant language
TypeScript
Stars
471
Forks
149
PR merge metrics
No merged PRs in 30d

Contributor guide

No contributing guide indexed for this repository

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.

More from microsoft/TypeScript-TmLanguage

All issues in microsoft/TypeScript-TmLanguage

Similar issues

More TypeScript issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.