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Module

std/assert/assert.ts

The Deno Standard Library
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.import { AssertionError } from "./assertion_error.ts";
/** * Make an assertion, error will be thrown if `expr` does not have truthy value. * * @example * ```ts * import { assert } from "https://deno.land/std@$STD_VERSION/assert/assert.ts"; * * assert("hello".includes("ello")); // Doesn't throw * assert("hello".includes("world")); // Throws * ``` */export function assert(expr: unknown, msg = ""): asserts expr { if (!expr) { throw new AssertionError(msg); }}