microsoft / microsoft/TypeScript
Ensure generated `.d.ts` files compile with no errors under `noImplicitAny`
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Bug
Domain: Declaration Emit
Infrastructure
- Dominant language
- Go
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- Avg merge
- 2d 4h
- Merged PRs (30d)
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Description
We recently just had https://github.com/microsoft/TypeScript/issues/36630 opened up on us. This is just a few weeks after #36216.
I'm pretty sure we already check that our generated .d.ts files are valid when the input was valid, but apparently we're not checking under noImplicitAny. We would've avoided these bugs if we'd checked with noImplicitAny.
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 locating the existing checks for generated .d.ts files and how they validate declarations from valid input. Add coverage for compilation with noImplicitAny enabled; done means generated declarations from valid input compile without errors under that option.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- compilers, testing
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100