assertFalse | /testing/asserts.ts | std@0.224.0

Module

std/testing/asserts.ts>assertFalse

The Deno Standard Library

denoland/deno_std

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function assertFalse

Deprecated

This will be removed in 1.0.0. Import from https://deno.land/std/assert/assert_false.ts instead.

import { assertFalse } from "https://deno.land/std@0.224.0/testing/asserts.ts";

Deprecated

This will be removed in 1.0.0. Import from https://deno.land/std/assert/assert_false.ts instead.

assertFalse(expr: unknown, msg?): asserts expr is Falsy

Make an assertion, error will be thrown if expr have truthy value.

Examples

Example 1

import { assertFalse } from "https://deno.land/std@0.224.0/testing/asserts.ts";

assertFalse(false); // Doesn't throw
assertFalse(true); // Throws

Parameters

expr: unknown

optional

msg = [UNSUPPORTED]

Returns

asserts expr is Falsy