typescript
https://github.com/microsoft/typescript
TypeScript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
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- Issues
- Suggestion: an option to make --showConfig more verbose
- Continuing #17110 - Given generic `W extends { x: A }` should be able to use `keyof W['x']` to index w.x
- Support for JSDoc interface definition
- Object literals should have a `this` type too
- Narrow length of tuples
- Error elaborations should not be de-duped
- Arrow function generics are resolved
- Add way force TS Server to use a specific set of tsconfig/jsconfigs
- Type guard does not narrow the same as if-statement
- Type metadata is lost in generic type interfaces
- Docs
- TypeScript not yet supported