# assertFalse Source: https://smartassertions.dev/assertions/assertFalse/ Index of every page: https://smartassertions.dev/llms.txt Assert that a value is strictly false (not just falsy), with type-narrowing to the literal type `false`. ## Usage ```ts import { assertFalse } from "@kensio/smartass"; const isEnabled: unknown = false; assertFalse(isEnabled); // isEnabled is now narrowed to literal false ``` ## Source Source file: [`src/assert/false/false.assert.ts`](https://github.com/KensioSoftware/smartass/blob/main/src/assert/false/false.assert.ts)