typescript
https://github.com/microsoft/typescript
TypeScript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
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- Issues
- Google feedback on TS 6.0-beta
- Error (2320) when extending interfaces where a property is both readonly and readwrite.
- Allow primitive LHS to `instanceof` operator if RHS is a custom `hasInstance`
- Fix stack overflow in error generation for recursive mapped types
- Add JSX.ElementChildrenAttribute change to TypeScript 5.8 release notes
- 6.0.20260301 Causing general instability and hanging operations
- tsserver hangs indefinitely when inferring return type of class method that passes this to a function with deeply nested conditional return type
- Confusing error message (2322), should use (2741) and (2322) error message when this["XXX"] = {...} has a missing (or mispelled) key or an incompatible value.
- Crash: TypeError: Cannot read properties of undefined (reading 'aliasSymbol') remains when using variadic tuple with (infer C)[] and constrained infer
- Debug Failure: "No error for last overload signature" crash when CustomTypeOptions.resources uses typeof on a large (~10k line) JSON file
- Docs
- TypeScript not yet supported