edlp_d8/sites/all/modules/contrib/admin/admin_toolbar/js/admin_toolbar.js

(function ($, Drupal) {
  Drupal.behaviors.adminToolbar = {
    attach: function (context, settings) {

      $('a.toolbar-icon', context).removeAttr('title');

      $('.toolbar-tray li.menu-item--expanded, .toolbar-tray ul li.menu-item--expanded .menu-item', context).hoverIntent({
        over: function () {
          // At the current depth, we should delete all "hover-intent" classes.
          // Other wise we get unwanted behaviour where menu items are expanded while already in hovering other ones.
          $(this).parent().find('li').removeClass('hover-intent');
          $(this).addClass('hover-intent');
        },
        out: function () {
          $(this).removeClass('hover-intent');
        },
        timeout: 250
      });

      // Make the toolbar menu navigable with keyboard.
      $('ul.toolbar-menu li.menu-item--expanded a', context).on('focusin', function () {
        $('li.menu-item--expanded', context).removeClass('hover-intent');
        $(this).parents('li.menu-item--expanded').addClass('hover-intent');
      });

      $('ul.toolbar-menu li.menu-item a', context).keydown(function (e) {
        if ((e.shiftKey && (e.keyCode || e.which) == 9)) {
          if ($(this).parent('.menu-item').prev().hasClass('menu-item--expanded')) {
            $(this).parent('.menu-item').prev().addClass('hover-intent');
          }
        }
      });

      $('.toolbar-menu:first-child > .menu-item:not(.menu-item--expanded) a, .toolbar-tab > a', context).on('focusin', function () {
        $('.menu-item--expanded').removeClass('hover-intent');
      });

      $('.toolbar-menu:first-child > .menu-item', context).on('hover', function () {
        $(this, 'a').css("background: #fff;");
      });

      $('ul:not(.toolbar-menu)', context).on({
        mousemove: function () {
          $('li.menu-item--expanded').removeClass('hover-intent');
        },
        hover: function () {
          $('li.menu-item--expanded').removeClass('hover-intent');
        }
      });

    }
  };
})(jQuery, Drupal);