ES6 Debugging: Application

app.js

import Cloud from '../cloud';
import program from 'commander';

let command, value;
const INC_CMD = 'increment';
const DEC_CMD = 'decrement';

program
  .description('online incrementer: increment cloud-based counters')
  .arguments('<cmd> [args]')
  .action((cmd, args) => {
    command = cmd;
    value = parseInt(args, 10);
  })
  .parse(process.argv);

let cloud = new Cloud(5);
console.log(`Starting at ${cloud.total}`);

switch (command) {
  case INC_CMD:
    cloud.increment(value);
    console.log(`Total is now ${cloud.total}`);
    break;
  case DEC_CMD:
    cloud.decrement(value);
    console.log(`Total is now ${cloud.total}`);
    break;
  default:
    console.error(`Unknown command: ${command}`);
    process.exit(1);
}