npm install is-opera> Check if browser is Opera
User agent sniffing is considered bad practice and should be avoided if possible.
```
$ npm install --save is-opera
`js
var isOpera = require('is-opera');
isOpera();
//=> true
isOpera({version: 29});
//=> true
isOpera({userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.152 Safari/537.36 OPR/29.0.1795.60'});
//=> true
`
Returns a boolean.
#### options
Type: object
##### options.userAgent
Type: string
User agent to test.
##### options.version
Type: string or number`
Check for specific version.
* brwsr - Get current browser
MIT © Andreas Gillström