t spanFour = document.querySelector('#span-four')
        addListener([spanThree, spanFour], 'click', (e) => {
          console.log('array test',  e.target)
        })
      ;</script>
      <br />
      <br />

      <div>
        <h3>Throw error</h3>
        <button id="fire-error">
          Fire test error
        </button>
      </div>
      <script>
        addListener('#fire-error', ['click'], (e) => {
          throw new Error('test')
        });
      </script>

      <div id="buttonContainer">
  