typescript
https://github.com/microsoft/typescript
TypeScript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
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- Issues
- Expose MappedType in typescript.d.ts
- @types dependency resolution can reference incorrect version
- Synthesized optional properties don't satisfy `Record<` target under EOPT: false
- Performance: Monomorphic AST Nodes
- Inferred type for accumulator and return value of `Array#reduce` is incorrect when used with `Record<string, unknown>`
- Object access reports error after upgrading to TypeScript 5.5
- Naked generic type returned from iterator method
- [isolatedDeclarations] Type of const variable declared with template literal expression containing only literals still requires explicit annotation
- Aliased optional chain calls don't narrow like their inline equivalents
- switch-true case-true narrowing not equivalent to default case.
- Docs
- TypeScript not yet supported