text: const cp = require('child_process')
  const gaze = require('gaze')
  
  let rollup_process = cp.spawn('yarn', ['rollup', '-w', '-c', 'pg.rollup.config.js'], {stdio: 'inherit'})
  gaze(['build/playground/server.js'], (err, watcher) => {
    watcher.on('all', start_server)
  })
  let server;
  
  function start_server() {
    kill_server()
    server = cp.spawn('node', ['build/playground/server'], {stdio: 'inherit'})
  }
  
  process.on('exit', kill_server)
  
  function kill_server() {
    if(server) server.kill('SIGTERM')
  }
  
  