is-typeof-error

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

Install

npm i is-typeof-error --save

Usage

For more use-cases see the tests

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

isTypeofError

Check that val is error.

Params

• val {Error}
• returns {Boolean}

Example

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.

Charlike Make Reagent