The [lodash](https://lodash.com/) method `_.flatten` exported as a [Node.js](https://nodejs.org/) module.
## Installation
Using npm:
```bash
$ {sudo -H} npm i -g npm
$ npm i --save lodash.flatten
```
In Node.js:
```js
var flatten = require('lodash.flatten');
```
See the [documentation](https://lodash.com/docs#flatten) or [package source](https://github.com/lodash/lodash/blob/4.4.0-npm-packages/lodash.flatten) for more details.