assertExists | /test/deps.js | postcss_autoprefixer@0.2.4

function assertExists

import { assertExists } from "https://deno.land/x/postcss_autoprefixer@0.2.4/test/deps.js";

assertExists<T>(actual: T, msg?: string): asserts actual is NonNullable<T>

Make an assertion that actual is not null or undefined. If not then throw.

Type Parameters

actual: T

optional

msg: string

asserts actual is NonNullable<T>