Parse yes/no like values

Useful for validating answers of a CLI prompt.

The following case-insensitive values are recognized:

'y', 'yes', 't', 'true', true, '1', 1, 'n', 'no', 'f', 'false', false, '0', 0, 'on', 'off'

Enable lenient mode to gracefully handle typos.

Install

Usage

import yn from 'yn';

yn('y');
//=> true

yn('NO');
//=> false

yn(true);
//=> true

yn('abomasum');
//=> undefined

yn('abomasum', {default: false});
//=> false

yn('mo', {lenient: true});
//=> false

Unrecognized values return undefined.

API

yn(input, options?)

input

Type: unknown

The value that should be converted.

options

Type: object

lenient

Type: boolean
Default: false

Use a key distance-based score to leniently accept typos of yes and no.

default

Type: boolean
Default: undefined

The default value if no match was found.