| # 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) | |