microsoft / microsoft/TypeScript
Better type printing for JSX IntrinsicElements
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In Discussion
Suggestion
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Description
Search Terms
JSX IntrinsicElements print
Suggestion
When printing JSX IntrinsicElements related types, prefer the tag name
Use Cases
Examples
const z1 = <a class="" />;
Now:
Type '{ class: string; }' is not assignable to type 'DetailedHTMLProps<AnchorHTMLAttributes<HTMLAnchorElement>, HTMLAnchorElement>'.
Suggest:
Type '{ class: string; }' is not assignable to type '<a />'.
This will make the error message easier to understand
Checklist
My suggestion meets these guidelines:
- This wouldn't be a breaking change in existing TypeScript/JavaScript code
- This wouldn't change the runtime behavior of existing JavaScript code
- This could be implemented without emitting different JS based on the types of the expressions
- This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
- This feature would agree with the rest of TypeScript's Design Goals.
Contributor guide
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
The issue names no files, tests, or entry points. Start by locating the compiler's JSX IntrinsicElements diagnostic and type-printing paths, then compare their output for the provided example. Done means the diagnostic uses the tag-name form while preserving the requested type-checking behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100