typescript
https://github.com/microsoft/typescript
TypeScript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
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- Issues
- Fixed incompatible property error reporting in `hasExcessProperties` under `exactOptionalPropertyTypes`
- [exactOptionalPropertyTypes] Unexpected 'undefined' arises in error message
- [bug] declaration files have invalid class member generics with mixin & multiple layer inheritance
- Error span incorrect when `this` constraint on member function fails
- Fixed an issue with `satisfies` "resolving" generic types of references
- satisfies operator shadows object this with interface this
- Mixin constructor not working with `args:unknown[]`, only with `args:any[]`
- Writes to indexed access of an index signature are not sufficiently constrained
- Discriminating property with never as possible type makes its enclosing object type disappear when narrowing
- Inconsistent narrowing of adjacently tagged unions
- Docs
- TypeScript not yet supported