Type Alias Widen<T>

Widen: T extends string
? string
: T extends number ? number : T extends boolean ? boolean : T

Widens string, number, and boolean literal types to their primitive base; all other types pass through unchanged.

type A = Widen<"hello">;
//   ^? string
type B = Widen<42>;
//   ^? number
type C = Widen<true>;
//   ^? boolean