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 #55632 issue (No type inferrence of callback arguments inside a tuple union type)
- Make enum literal type identical to the union of its values
- Type Inference for Regular Expressions
- Error on destructured nullables
- [WIP] Support condition always true in prefix unary expression
- Add source mappings for serialized properties with available declaration
- Don't special case nullable types in `isTypeEqualityComparableTo`
- consistently check expressions with >, >=, <, <= for unconstrained types in strictNullChecks
- Optimize `scan` with a lookup table to reduce branching
- Isolated Declarations in TS 5.5: State of the feature
- Docs
- TypeScript not yet supported