Neptunian Parity Mnemonic

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

    4.0.0 • Public • Published

    has-flag Build Status

    Check if argv has a specific flag

    Correctly stops looking after an -- argument terminator.


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    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.

    Security

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

    License

    MIT © Sindre Sorhus

    Install

    npm i has-flag@4.0.0

    Version

    4.0.0

    License

    MIT

    Unpacked Size

    4.42 kB

    Total Files

    5

    Last publish

    Collaborators

    • sindresorhus