assert | /_util/assert.ts | std@0.142.0

The Deno 2 Release Candidate is here

Deno standard library

The Standard Library has been moved to JSR. See the blog post for details.

function assert

import { assert } from "https://deno.land/std@0.142.0/_util/assert.ts";

assert(expr: unknown, msg?): asserts expr

Make an assertion, if not true, then throw.

Parameters

expr: unknown

optional

msg = [UNSUPPORTED]

asserts expr