Type Alias AssertTrue<T>

AssertTrue<T>: never

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

Type Parameters

T extends true
The type to assert is true.

Example: Usage

import { AssertTrue, Has, IsNullable } from "@std/testing/types";

const result = 1 as string | number | null;

type doTest = AssertTrue<Has<typeof result, string> | IsNullable<typeof result>>;