title: having issues with usemin-cli and javascript with backticks
body: <p>So I just got done working on a quick little drum kit project from Javascript30 and am working to have it optimized. I want to use nom package usemin-cli but it require that there are no backticks in the code. Any thoughts on how to fix this?</p>
  <p>Javascript</p>
  <pre class="lang-js prettyprint-override"><code>function playSound(e) {
    const audio = document.querySelector(`audio[data-key=&quot;${e.keyCode}&quot;]`);
    const key   = document.querySelector(`.key[data-key=&quot;${e.keyCode}&quot;]`);
    if (!audio) return;    //stops the function from running;
    audio.currentTime = 0; //rewind sound to start;
    audio.play();
    key.classList.add('playing');
  };
  function removeTransition(e) {
    if (e.propertyName !== 'transform') return; //skips if the event is not a transform type
    this.classList.remove('playing');
  };
  
  
  const keys = document.querySelectorAll('.key');
  keys.forEach(key =&gt; key.addEventListener('transitionend', removeTransition));
  window.addEventListener('keydown', playSound);
  
  </code></pre>