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

> Measure the difference between two strings<br>
> One of the fastest JS implementations of the [Levenshtein distance](https://en.wikipedia.org/wiki/Levenshtein_distance) algorithm


## Install

```
$ npm install leven
```


## Usage

```js
const leven = require('leven');

leven('cat', 'cow');
//=> 2
```


## Benchmark

```
$ npm run bench
```

```
         165,926 op/s » leven
         164,398 op/s » talisman
           1,044 op/s » levenshtein-edit-distance
             628 op/s » fast-levenshtein
             497 op/s » levenshtein-component
             195 op/s » ld
             190 op/s » levenshtein
             168 op/s » levdist
              10 op/s » natural
```


## Related

- [leven-cli](https://github.com/sindresorhus/leven-cli) - CLI for this module


## License

MIT © [Sindre Sorhus](https://sindresorhus.com)