@qntm-code/utils/dist/mjs/type-predicates/isError.spec.js

A collection of useful utility functions with associated TypeScript types. All functions have been unit tested.

import { isError } from './isError';
describe(`isError`, () => {
    it(`should return true if value is an Error`, () => {
        const value = new Error();
        expect(isError(value)).toBe(true);
    });
    it(`should return false if value is not an Error`, () => {
        const value = Error;
        expect(isError(value)).toBe(false);
    });
});