promisify-cli

promisify-cli

promsifiy-cli is just a cli parser following *nix common line arguments conventions, used by promising way. but it is different.

CLI is just a piece of program, we can just think of it as a function, function requires input and give out results. that's all.

promisify-cli is trying to make cli more intuitive, using it just like invoking a function.

promsifiy-cli converts all command line flags switches and arguments into function params and options.

You can use it building efficient cli tools.

Usage

CLI Files

/*
In package.json adding a new Field `cli`
*/

//WARNING: '-h', '--help', '-v', '--version' are preserved. They are used to print out  Usage or Version information.
{
 ......
  cli:[{
      "flag": "-p"
      //or "flag": "-p --port"              specify multiple flags, short/long flags
      //or "flag": "-p, --port <port>"      indicats *required* param
      //or "flag": "-p --port [port]"       indicats [optional] param
      //"name": "alias name of port"        explicitly to customize its name
      //"required" : true / false           explicitly to specify whether it's optional or must required
      //"value": "defaultValue"             explicitly assign a default value
      //"desc": "description message"       descriptin message
  },
    {
      "flag": "--host"
  }]
......
}

/*

./index.js

*/

var cli = require('../promisify-cli');

//eg cli: startserver -p 80 --host 192.168.28.3 ./www

cli()
  .then(function (cli) {
    console.log('data->', cli.params, cli.options);

    /*  params
      [
        './www'
      ]
    */

    /*  options
    {
      p: '80',
      host: '192.168.28.3'
    }
    */
  }
  })
  .catch(function (e) {
    console.error('catch->', e.message);
  })

API

WARNING: -h, --help, -v, --version are preserved. They are used to print out Help,Usage,Version information.

• cli([flags[,options]]) function get cli object

  • [flags]

    eg: ['-p',80,'--host','localhost'] to test you  funcationality. 		default get from `process.argv`   automatically. you don't need 		to specify it probably.
    

  • [options] * enableUnkownOptions if it allows unknown options from command line.

• cli.params [] parsed arguments from command line

• cli.options {} parsed flags from command line

• cli.help function print out all usage and help information and exit.

Inspired

specially thanks to commander

Good Library Companions

• promisify-bash
• promisify-fetch
• promsifiy-fs
• promsifiy-git
• promsifiy-npm