microsoft / microsoft/TypeScript
Strict variance and read-only versions of types
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Description
I feel like we should have an open "suggestion" issue with a meaningful title to track the work on stricter variance and read-only versions of types that the TypeScript team is considering, especially as other issues are being duped against it. The initial design sketch and a few comments are in #17502.
After a little more searching, should this be merged with #10725?
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 reading the design sketch and comments in #17502, then compare this tracking issue with #10725. Determine whether the stricter variance and read-only types work belongs here or should be consolidated elsewhere; done means there is one clear issue tracking the work.
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
- 20/100