Type Alias AssertFalse<T>

AssertFalse<T>: never

Asserts at compile time that the provided type argument's type resolves to false.

Type Parameters

T extends false
The type to assert is false.

Example: Usage

import { AssertFalse, IsNever } from "@std/testing/types";

const result = 1 as string | number | null;

type doTest = AssertFalse<IsNever<typeof result>>;