text: const a = require('debug')('worker:a')
  const b = require('debug')('worker:b')
  
  function work () {
    a('doing lots of uninteresting work')
    setTimeout(work, Math.random() * 1000)
  }
  
  work()
  
  function workb () {
    b('doing some work')
    setTimeout(workb, Math.random() * 2000)
  }
  
  workb()
  