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Module

std/assert/mod.ts>assertFalse

The Deno Standard Library
Latest
function assertFalse
Re-export
import { assertFalse } from "https://deno.land/std@0.223.0/assert/mod.ts";

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

Examples

Example 1

import { assertFalse } from "https://deno.land/std@0.223.0/assert/assert_false.ts";

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

Parameters

expr: unknown
optional
msg = [UNSUPPORTED]

Returns

asserts expr is Falsy