# aggregate-error [![Build Status](https://travis-ci.org/sindresorhus/aggregate-error.svg?branch=master)](https://travis-ci.org/sindresorhus/aggregate-error)

> Create an error from multiple errors


## Install

```
$ npm install aggregate-error
```


## Usage

```js
const AggregateError = require('aggregate-error');

const error = new AggregateError([new Error('foo'), 'bar', {message: 'baz'}]);

throw error;
/*
AggregateError:
    Error: foo
        at Object.<anonymous> (/Users/sindresorhus/dev/aggregate-error/example.js:3:33)
    Error: bar
        at Object.<anonymous> (/Users/sindresorhus/dev/aggregate-error/example.js:3:13)
    Error: baz
        at Object.<anonymous> (/Users/sindresorhus/dev/aggregate-error/example.js:3:13)
    at AggregateError (/Users/sindresorhus/dev/aggregate-error/index.js:19:3)
    at Object.<anonymous> (/Users/sindresorhus/dev/aggregate-error/example.js:3:13)
    at Module._compile (module.js:556:32)
    at Object.Module._extensions..js (module.js:565:10)
    at Module.load (module.js:473:32)
    at tryModuleLoad (module.js:432:12)
    at Function.Module._load (module.js:424:3)
    at Module.runMain (module.js:590:10)
    at run (bootstrap_node.js:394:7)
    at startup (bootstrap_node.js:149:9)
*/

for (const individualError of error) {
	console.log(individualError);
}
//=> [Error: foo]
//=> [Error: bar]
//=> [Error: baz]
```


## API

### AggregateError(errors)

Returns an `Error` that is also an [`Iterable`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators#Iterables) for the individual errors.

#### errors

Type: `Array<Error|Object|string>`

If a string, a new `Error` is created with the string as the error message.<br>
If a non-Error object, a new `Error` is created with all properties from the object copied over.