typescript
https://github.com/microsoft/typescript
TypeScript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
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- Issues
- Incorrect narrowing of Union type after discrimination when one type is assignable to the other (even when explicit type annotation is present)
- Performance regression from #49625 and #52984
- Recursive types can depend on presence and source location of unused type declaration
- Unwanted auto-imports in script files
- Add an `absent` type forbidding presence
- Numeric Range Types (Feature Update)
- TS:1379 An import alias cannot reference a declaration that was exported using 'export type'
- Dual ESM/CJS emit with tsc
- Using `"allowJs": true` and `"module": "commonjs"` to transform `.mjs` files should emit `.cjs` files
- 6.0 Deprecation List
- Docs
- TypeScript not yet supported