The new release of the company’s typed superset of JavaScript introduces a limited form of type checking against conditional types in return statements. The TypeScript 5.8 beta was introduced ...

Daniel Rosenwasser, principal product manager at Microsoft, announced the release of TypeScript 5.8. The new release features, as usual, better type inference. It also improves performance and the ...

In a conditional type, the immediate if checks the type of the object being passed and, based on that object's type, specifies the type to be used for my new datatype. This type declaration, for ...