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Module

std/testing/asserts.ts>assertExists

The Deno Standard Library
Latest
function assertExists
Deprecated
Deprecated

This will be removed in 1.0.0. Import from https://deno.land/std/assert/assert_exists.ts instead.

import { assertExists } from "https://deno.land/std@0.224.0/testing/asserts.ts";

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

Examples

Example 1

import { assertExists } from "https://deno.land/std@0.224.0/testing/asserts.ts";

assertExists("something"); // Doesn't throw
assertExists(undefined); // Throws

Parameters

actual: T
optional
msg: string

Returns

asserts actual is NonNullable<T>