# compare-versions
[![Build Status](https://img.shields.io/travis/omichelsen/compare-versions/master.svg)](https://travis-ci.org/omichelsen/compare-versions)
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Compare [semver](http://semver.org/) version strings to find greater, equal or lesser. Runs in the browser as well as Node.js/React Native etc. Has no dependencies and is tiny (<600 bytes gzipped).
This library supports the full semver specification, including comparing versions with different number of digits like `1.0.0`, `1.0`, `1`, and pre-release versions like `1.0.0-alpha`. Also supports wildcards for minor and patch version like `1.0.x` or `1.0.*`. Any leading `v` is ignored. Numbers with leading zero is handled as normal numbers ignoring the zero.
## Install
Install with `npm` or `bower`:
```bash
$ npm install compare-versions --save
```
```bash
$ bower install compare-versions --save
```
## Usage
```javascript
var compareVersions = require('compare-versions');
compareVersions('10.1.8', '10.0.4'); // 1
compareVersions('10.0.1', '10.0.1'); // 0
compareVersions('10.1.1', '10.2.2'); // -1
```
Can also be used for sorting:
```javascript
var versions = [
'1.5.19',
'1.2.3',
'1.5.5'
];
console.log(versions.sort(compareVersions));
```
Outputs:
```javascript
[
'1.2.3',
'1.5.5',
'1.5.19'
]
```