has-flag

Check if argv has a specific flag

Correctly stops looking after an -- argument terminator.

Get professional support for this package with a Tidelift subscription
_{Tidelift helps make open source sustainable for maintainers while giving companies
assurances about security, maintenance, and licensing for their dependencies.}

Install

$ npm install has-flag

Usage

```js // foo.js const hasFlag = require('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

API

hasFlag(flag, [argv])

Returns a boolean for whether the flag exists.

flag

Type: string

CLI flag to look for. The -- prefix is optional.

argv

Type: string[]
Default: process.argv

CLI arguments.

Security

To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.