microsoft / microsoft/TypeScript
Labeled maps, set and records
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Suggestion
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Description
Suggestion
Following on the idea of labeled tuples and parameter names, would it be possible to label Map, Set and Record?
Use Cases
It would help to communicate the intent of the different parts.
Examples
Map<tabId: number, annotationCount: number>
Record<tabId: number, annotationCount: number>
Set<tabId: number>
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
Start by reviewing the linked TypeScript 4.0 labeled tuple elements release note and the examples in this issue. The payload names no implementation files, entry points, or tests, so the scope and completion criteria would need to be established through TypeScript's design process before coding.
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
- Needs clarification
- Newbie friendliness
- 25/100