is-never

IsNever<Type> returns true when type Type is never. Otherwise returns false

type IsNeverNever = IsNever<never>;
//   ^? true
type IsAnyNever = IsNever<any>;
//   ^? false
type IsUnknownNever = IsNever<unknown>;
//   ^? false

TS Playground – https://tsplay.dev/weBR1N