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std/assert/assert.ts

Deno standard library
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import { AssertionError } from "./assertion_error.ts";
/** Make an assertion, error will be thrown if `expr` does not have truthy value. */export function assert(expr: unknown, msg = ""): asserts expr { if (!expr) { throw new AssertionError(msg); }}