has-flag
    TypeScript icon, indicating that this package has built-in type declarations

    3.0.0 • Public • Published

    has-flag Build Status

    Check if argv has a specific flag

    Correctly stops looking after an -- argument terminator.

    Install

    $ npm install has-flag
    

    Usage

    // 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.

    License

    MIT © Sindre Sorhus