index.js

const start = require('./src/index.js');

const setupAndStart = function(key, args) {
  let dev = false;
  let config = {
    key: key,
    debug: false,
    verboose: false
  };

  for (let i=0;i<args.length;i++) {
    switch(args[i]) {
      case '-d':
      case '--debug':
      config.debug = true;
      break;
      case '-v':
      case '--verboose':
      config.verboose = true;
      break;
      case '--dev':
      dev = true;
      break;
      case '-p':
      case '--prefix':
      config.prefix = args[++i];
      break;
      case '--key':
      config.key = args[++i];
      break;
      case '--owner':
      config.owner = args[++i];
      break;
      case '--admin':
      config.adminFlag = args[++i];
      break;
    }
  }

  if (!dev) return start(config).then(null).catch(console.error);

  const fs = require('fs');
  let stop, restarting = false;

  fs.watch('src', { recursive: true }, async function() {
    if (restarting) return;
    console.log('\nRestarting\n==========');
    restarting = true;
    if (stop) await stop();
    stop = undefined;
    await devStart();
    restarting = false;
  });

  const devStart = async function() {
    Object.keys(require.cache).forEach((key) => delete require.cache[key]);
    let startFunc = require('./src/index.js'), client;
    try {
      client = await startFunc(config);
    } catch(e) {
      console.log(e);
      return await devStart();
    }
    client.on('warn', console.warn);
    client.on('error', console.error);
    stop = client.destroy.bind(client);
  }

  process.on('beforeExit', async function() {
    if (stop) await stop();
  })

  devStart().then(null).catch(console.error);
}

if (require.main === module) setupAndStart(process.env.DISCORD_API_KEY, process.argv);

module.exports = {
  setupAndStart,
  start
};