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# yn [](https://travis-ci.org/sindresorhus/yn)
> Parse yes/no like values
Useful for validating answers of a CLI prompt.
---
The following case-insensitive values are recognized:
```js
'y', 'yes', 'true', true, '1', 1, 'n', 'no', 'false', false, '0', 0
```
*Enable lenient mode to gracefully handle typos.*
## Install
```
$ npm install yn
```
## Usage
```js
const yn = require('yn');
yn('y');
//=> true
yn('NO');
//=> false
yn(true);
//=> true
yn('abomasum');
//=> null
yn('abomasum', {default: false});
//=> false
yn('mo', {lenient: true});
//=> false
```
Unrecognized values return `null`.
## API
### yn(input, [options])
#### input
Type: `any`
Value that should be converted.
#### options
Type: `Object`
##### lenient
Type: `boolean`<br>
Default: `false`
Use a key distance-based score to leniently accept typos of `yes` and `no`.
##### default
Type: `boolean`<br>
Default: `null`
Default value if no match was found.
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)