microsoft / microsoft/TypeScript

JSDoc doesn't dig through type aliases

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Domain: JSDoc Domain: LS: Type Display Experience Enhancement Suggestion
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Description

TypeScript Version: 6fd6a04f2eabcbd468b80aac270b34bad24892e4

Code

/** @param containingNode Node to check for parse error */
type AddUnusedDiagnostic = (containingNode: number, type: number, diagnostic: number) => void;

Expected behavior: containingNode in the JSDoc comment binds to the parameter of the function type (e.g. rename, quick info, document highlights, and GTD work).

Actual behavior: containingNode doesn't bind to anything and the quick info just says it has type any.

Contributor guide

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the reported TypeScript snippet and tracing how its JSDoc parameter is resolved for a function type inside a type alias. Verify the result through quick info, rename, document highlights, and GTD work; done means containingNode binds to the function-type parameter instead of showing any.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
35/100

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