[is-typeof-error][author-www-url] [![npmjs.com][npmjs-img]][npmjs-url] [![The MIT License][license-img]][license-url]

> Check that given value is any type of error and instanceof Error.

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Install

``
npm i is-typeof-error --save
`

Usage

> For more use-cases see the tests

`js
const isTypeofError = require('is-typeof-error')
`

$3


> Check that val is error.

Params

* val {Error}
* returns {Boolean}

Example

`js
const isTypeofError = require('is-typeof-error')
const PluginError = require('plugin-error')
const KindError = require('kind-error')

const CustomClass = function () {}
CustomClass.prototype.foo = function () {}

isTypeofError(new TypeError('test')) // => true
isTypeofError(new KindError('test')) // => true
isTypeofError(new SyntaxError('test')) // => true
isTypeofError(new PluginError('test', 'msg')) // => true

isTypeofError(new CustomClass('test')) // => false
isTypeofError(new Object({a: 'b'})) // => false
isTypeofError(new RegExp('test')) // => false
isTypeofError(Object.create({a: 'b'})) // => false
isTypeofError(/regex/) // => false
isTypeofError({a: 'b'}) // => false
`

Related


* error-base: Create custom Error classes. | homepage
* is-kindof: Check type of given javascript value. Support promises, generators, streams, and native types… more | homepage
* kind-error: Base class for easily creating meaningful and quiet by default Error classes with sane… more | homepage
* kind-of: Get the native type of a value. | homepage
* kind-of-extra: Additional functionality to kind-of` type check utility, support promises, generators… more | homepage
* kind-of-types: List of all javascript types. Used and useful for checking, validation, sanitizing and… more | homepage

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
But before doing anything, please read the CONTRIBUTING.md guidelines.

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[npmjs-url]: https://www.npmjs.com/package/is-typeof-error
[npmjs-img]: https://img.shields.io/npm/v/is-typeof-error.svg?label=is-typeof-error

[license-url]: https://github.com/tunnckoCore/is-typeof-error/blob/master/LICENSE
[license-img]: https://img.shields.io/badge/license-MIT-blue.svg

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[codeclimate-img]: https://img.shields.io/codeclimate/github/tunnckoCore/is-typeof-error.svg

[travis-url]: https://travis-ci.org/tunnckoCore/is-typeof-error
[travis-img]: https://img.shields.io/travis/tunnckoCore/is-typeof-error.svg

[coveralls-url]: https://coveralls.io/r/tunnckoCore/is-typeof-error
[coveralls-img]: https://img.shields.io/coveralls/tunnckoCore/is-typeof-error.svg

[david-url]: https://david-dm.org/tunnckoCore/is-typeof-error
[david-img]: https://img.shields.io/david/tunnckoCore/is-typeof-error.svg

[standard-url]: https://github.com/feross/standard
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[author-www-url]: http://www.tunnckoCore.tk
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[author-npm-url]: https://www.npmjs.com/~tunnckocore
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