API reference › @evolu/common › Assert › assertFalse
const assertFalse: (value: unknown) => asserts value is false;
Defined in: packages/common/src/Assert.ts:120
Asserts that a value is exactly false and narrows it to false.
Unlike assert, this checks an exact boolean value instead of falsiness and does not require a custom message.
Example
import { assertFalse, assertType } from "@evolu/common";
const value: unknown = false;
assertFalse(value);
assertType<false, typeof value>();