Typeservicesv0.8.2NotReturns a boolean for whether A is false. type Not<A extends boolean> = A extends true ? false : A extends false ? true : never;type Not<A extends boolean> = A extends true ? false : A extends false ? true : never;ExamplesCopytype A = Not<true>; //=> false type B = Not<false>; //=> truetype A = Not<true>; //=> false type B = Not<false>; //=> trueType parametersAA extends booleanA extends boolean