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# array-find-index [](https://travis-ci.org/sindresorhus/array-find-index)
> ES2015 [`Array#findIndex()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex) [ponyfill](https://ponyfill.com)
## Install
```
$ npm install --save array-find-index
```
## Usage
```js
const arrayFindIndex = require('array-find-index');
arrayFindIndex(['rainbow', 'unicorn', 'pony'], x => x === 'unicorn');
//=> 1
```
## API
Same as `Array#findIndex()`, but with the input array as the first argument.
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)
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