typescript
https://github.com/microsoft/typescript
TypeScript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
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- Issues
- Fix to use string literal type in ArrayBuffer's `Symbol.toStringTag`
- Add ESNext float16 features and fix TypedArrays of BigInt types
- JSDoc with @extends, type parameter and member expression gives wrong dts output
- `asserts this is T` does not narrow type of `this`
- Assertion signature on generics doesn't narrow
- Fixed narrowing of optional chains using type predicates
- Error on destructured nullables
- `isolatedModules` does not generate the same code
- [Control flow] Array filter with typeguard works differently following array initial value
- undefined is narrowed away incorrectly
- Docs
- TypeScript not yet supported