args-flagify

Node.js CLI helper with zero dependencies

Inspired by Sindre Sorhus and his beautiful CLI helper meow.

Install

$ npm install --save args-flagify

Usage

$ your-cli firstInput --radius 2.45

#!/usr/bin/env node

const argsFlagify = require('args-flagify');

const cli = argsFlagify(
    `
Usage
  $ your-cli <input>

Options
  --radius, -r  Enter your radius

Examples
  $ your-cli firstInput --radius 2.45
  $ your-cli firstInput -r 2.45
`, {
    radius: {
        type: 'number',
        alias: 'r',
        default: 5,
    },
});

console.log(cli);
/* output
{
    inputs: ['firstInput'],
    flags: {
        radius: 2.45
    },
    help: '\n' +
      '    Usage\n' +
      '      $ your-cli <input>\n' +
      '\n' +
      '    Options\n' +
      '      --radius, -r  Enter your radius\n' +
      '\n' +
      '    Examples\n' +
      '      $ your-cli firstInput --radius 2.45\n' +
      '      $ your-cli firstInput -r 2.45',
    version: 1.0.1
}
*/

$ your-cli --help

Usage
  $ your-cli <input>

Options
  --radius, -r  Enter your radius

Examples
  $ your-cli firstInput --radius 2.45
  $ your-cli firstInput -r 2.45

$ your-cli --version
$ your-cli -v

1.0.3

API

argsFlagify(help, flags?)

Returns an object with:

• inputs (Array) - Non flag arguments
• flags (Object) - flags (the key is the flag name, the value is the flag value of type: string, number or boolean)
• help (string) - the help text used with --help
• version (string) - the version of your CLI

help

Type: string

The help text for your CLI.

flags

Type: Object

The flags to parse.

The key is the flag name.

The value is the flag type: number, string, boolean, or an object with the flag options:

• type: Type of the value. (Possible values: string, boolean, number)
• alias: Short flag alias.
• default: Default value if the flag is not provided. Type: number, string, boolean.

Example:

argsFlagify(`
...

help text

...
`, {
    radius: 'number',
    firstName: {
        type: 'string',
        alias: 'fn'
    },
    print: {
        type: 'boolean',
        default: true,
    },
});

LICENSE

MIT