code: function(itemsLeft) {
  			var itemText = itemsLeft === 1 ? 'item' : 'items';
  
  			moduleEl.querySelector('.items-left-counter').textContent = itemsLeft;
  			moduleEl.querySelector('.items-left-text').textContent = itemText + ' left';
  		}
docs: Updates the displayed count of incomplete tasks
  @param {number} itemsLeft # of incomplete tasks
  @returns {void}