main.js

#!/usr/bin/env node
var commandLineArgs = require("command-line-args")
, colors = require('colors')
, options = commandLineArgs([
  { name: "port", alias: "P", type: Number, defaultValue: 3000 },
  { name: "allowCORS", alias: "C", type: Boolean, defaultValue: false },
  { name: "help", alias: "H", type: Boolean, defaultValue: false }
])
, directory = process.argv[2] || "."
, commandLineUsage = require('command-line-usage')
, usage = commandLineUsage(/*templateData*/)
  ;

if(options.help){
  console.log(usage);
  console.log("# ".gray + "json-rest-server ../mydirectory -P 3000\n".cyan);
}else{
  try{
    require("./index.js")(directory, options.port, options.allowCORS)();
  }catch(err){
    console.error("You must insert a valid path as parameter".red + "\nTry with something like this: ".grey + "json-rest-server ../mydirectory".cyan);
    console.log(usage)
  }
}