IsTruthy.md

typelab / assertions / IsTruthy

type IsTruthy<T> = _IsTrue<IfTruthy<T, true, false>>;

Checks if a given type T is not `Falsy` or never.

Type Parameters

Type Parameter	Description
T	The type to be checked.

Returns

true if T is not `Falsy` or never, false otherwise.

Example

type Valid = IsTruthy<0 | 1>; // true
type Invalid = IsTruthy<0 | 1>; // false