asserts.assertIsError | /deps.ts | dtils@1.6.1

Module

x/dtils/deps.ts>asserts.assertIsError

The best unofficial library of utilities for Deno applications

Vehmloewff/dtils

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function asserts.assertIsError

import { asserts } from "https://deno.land/x/dtils@1.6.1/deps.ts";
const { assertIsError } = asserts;

assertIsError<E extends Error = Error>(

error: unknown,

ErrorClass?: new (...args: any[]) => E,

msgIncludes?: string,

msg?: string,

): asserts error is E

Make an assertion that error is an Error. If not then an error will be thrown. An error class and a string that should be included in the error message can also be asserted.

Type Parameters

optional

E extends Error = Error

Parameters

error: unknown

optional

ErrorClass: new (...args: any[]) => E

optional

msgIncludes: string

optional

msg: string

Returns

asserts error is E