Check if argv has a specific flag
npm install has-flag> Check if argv has a specific flag
```
$ npm install has-flag
`js
// foo.js
import hasFlag from 'has-flag';
hasFlag('unicorn');
//=> true
hasFlag('--unicorn');
//=> true
hasFlag('f');
//=> true
hasFlag('-f');
//=> true
hasFlag('foo=bar');
//=> true
hasFlag('foo');
//=> false
hasFlag('rainbow');
//=> false
`
``
$ node foo.js -f --unicorn --foo=bar -- --rainbow
Returns a boolean for whether the flag exists.
It correctly stops looking after an -- argument terminator.
#### flag
Type: string
CLI flag to look for. The -- prefix is optional.
#### argv
Type: string[]\process.argv`
Default:
CLI arguments.
---