isError | /is_error.ts | isx@1.1.1

Collection of validation functions for JavaScript data

function isError

import { isError } from "https://deno.land/x/isx@1.1.1/is_error.ts";

isError(input: unknown): input is Error

Whether the input is Error or not.

Examples

Example 1

import { isError } from "https://deno.land/x/isx@$VERSION/is_error.ts"
import { assertEquals } from "https://deno.land/std/testing/asserts.ts"
assertEquals(isError(Error()), true)
assertEquals(isError(new SyntaxError()), true)
assertEquals(isError(new Date()), false);

Parameters

input: unknown

Any input.

Returns

input is Error