code: function trigger(event, target) {
      target = target || event.type;
      if (target === 'mouseout') target = 'mouseover';
  
      return target === $(event.element).get('data-trigger');
    }
docs: Should this event trigger the tooltip?
  
  @param {Event} event
  @param {String} target compare to type of target
  @returns {Boolean}
  @api private