text: const context = new AudioContext()
  
  function playSine(freq, shape = 'sine', duration = 0.2) {
    const o = context.createOscillator()
    o.type = shape;
    o.frequency.value = freq;
    const g = context.createGain()
    o.connect(g)
    g.connect(context.destination)
    o.start(0)
    g.gain.exponentialRampToValueAtTime(
       0.00001, context.currentTime + duration
    )
  }
  
  const beep = function() {
    playSine(261.6);
  }
  
  const boop = function() {
    playSine(830.6);
  }
  
  const zing = function() {
    playSine(1109, 'triangle', 1.5);
  }
  
  export {
      beep,
      boop,
      zing,
  }
  