Issue #2818825 by drpal, nod_, droplet, cilefen: Rename all JS files to *.es6.js and compile them

core/misc/active-link.es6.js

+/**
+ * @file
+ * Attaches behaviors for Drupal's active link marking.
+ */
+
+(function (Drupal, drupalSettings) {
+
+  'use strict';
+
+  /**
+   * Append is-active class.
+   *
+   * The link is only active if its path corresponds to the current path, the
+   * language of the linked path is equal to the current language, and if the
+   * query parameters of the link equal those of the current request, since the
+   * same request with different query parameters may yield a different page
+   * (e.g. pagers, exposed View filters).
+   *
+   * Does not discriminate based on element type, so allows you to set the
+   * is-active class on any element: a, li…
+   *
+   * @type {Drupal~behavior}
+   */
+  Drupal.behaviors.activeLinks = {
+    attach: function (context) {
+      // Start by finding all potentially active links.
+      var path = drupalSettings.path;
+      var queryString = JSON.stringify(path.currentQuery);
+      var querySelector = path.currentQuery ? "[data-drupal-link-query='" + queryString + "']" : ':not([data-drupal-link-query])';
+      var originalSelectors = ['[data-drupal-link-system-path="' + path.currentPath + '"]'];
+      var selectors;
+
+      // If this is the front page, we have to check for the <front> path as
+      // well.
+      if (path.isFront) {
+        originalSelectors.push('[data-drupal-link-system-path="<front>"]');
+      }
+
+      // Add language filtering.
+      selectors = [].concat(
+        // Links without any hreflang attributes (most of them).
+        originalSelectors.map(function (selector) { return selector + ':not([hreflang])'; }),
+        // Links with hreflang equals to the current language.
+        originalSelectors.map(function (selector) { return selector + '[hreflang="' + path.currentLanguage + '"]'; })
+      );
+
+      // Add query string selector for pagers, exposed filters.
+      selectors = selectors.map(function (current) { return current + querySelector; });
+
+      // Query the DOM.
+      var activeLinks = context.querySelectorAll(selectors.join(','));
+      var il = activeLinks.length;
+      for (var i = 0; i < il; i++) {
+        activeLinks[i].classList.add('is-active');
+      }
+    },
+    detach: function (context, settings, trigger) {
+      if (trigger === 'unload') {
+        var activeLinks = context.querySelectorAll('[data-drupal-link-system-path].is-active');
+        var il = activeLinks.length;
+        for (var i = 0; i < il; i++) {
+          activeLinks[i].classList.remove('is-active');
+        }
+      }
+    }
+  };
+
+})(Drupal, drupalSettings);

core/misc/active-link.js

 /**
- * @file
- * Attaches behaviors for Drupal's active link marking.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/active-link.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function (Drupal, drupalSettings) {
 
   'use strict';
 
-  /**
-   * Append is-active class.
-   *
-   * The link is only active if its path corresponds to the current path, the
-   * language of the linked path is equal to the current language, and if the
-   * query parameters of the link equal those of the current request, since the
-   * same request with different query parameters may yield a different page
-   * (e.g. pagers, exposed View filters).
-   *
-   * Does not discriminate based on element type, so allows you to set the
-   * is-active class on any element: a, li…
-   *
-   * @type {Drupal~behavior}
-   */
   Drupal.behaviors.activeLinks = {
-    attach: function (context) {
-      // Start by finding all potentially active links.
+    attach: function attach(context) {
       var path = drupalSettings.path;
       var queryString = JSON.stringify(path.currentQuery);
       var querySelector = path.currentQuery ? "[data-drupal-link-query='" + queryString + "']" : ':not([data-drupal-link-query])';
       var originalSelectors = ['[data-drupal-link-system-path="' + path.currentPath + '"]'];
       var selectors;
 
-      // If this is the front page, we have to check for the <front> path as
-      // well.
       if (path.isFront) {
         originalSelectors.push('[data-drupal-link-system-path="<front>"]');
       }
 
-      // Add language filtering.
-      selectors = [].concat(
-        // Links without any hreflang attributes (most of them).
-        originalSelectors.map(function (selector) { return selector + ':not([hreflang])'; }),
-        // Links with hreflang equals to the current language.
-        originalSelectors.map(function (selector) { return selector + '[hreflang="' + path.currentLanguage + '"]'; })
-      );
+      selectors = [].concat(originalSelectors.map(function (selector) {
+        return selector + ':not([hreflang])';
+      }), originalSelectors.map(function (selector) {
+        return selector + '[hreflang="' + path.currentLanguage + '"]';
+      }));
 
-      // Add query string selector for pagers, exposed filters.
-      selectors = selectors.map(function (current) { return current + querySelector; });
+      selectors = selectors.map(function (current) {
+        return current + querySelector;
+      });
 
-      // Query the DOM.
       var activeLinks = context.querySelectorAll(selectors.join(','));
       var il = activeLinks.length;
       for (var i = 0; i < il; i++) {
         activeLinks[i].classList.add('is-active');
       }
     },
-    detach: function (context, settings, trigger) {
+    detach: function detach(context, settings, trigger) {
       if (trigger === 'unload') {
         var activeLinks = context.querySelectorAll('[data-drupal-link-system-path].is-active');
         var il = activeLinks.length;
@@ -64,5 +48,4 @@
       }
     }
   };
-
-})(Drupal, drupalSettings);
+})(Drupal, drupalSettings);
\ No newline at end of file

core/misc/announce.es6.js

+/**
+ * @file
+ * Adds an HTML element and method to trigger audio UAs to read system messages.
+ *
+ * Use {@link Drupal.announce} to indicate to screen reader users that an
+ * element on the page has changed state. For instance, if clicking a link
+ * loads 10 more items into a list, one might announce the change like this.
+ *
+ * @example
+ * $('#search-list')
+ *   .on('itemInsert', function (event, data) {
+ *     // Insert the new items.
+ *     $(data.container.el).append(data.items.el);
+ *     // Announce the change to the page contents.
+ *     Drupal.announce(Drupal.t('@count items added to @container',
+ *       {'@count': data.items.length, '@container': data.container.title}
+ *     ));
+ *   });
+ */
+
+(function (Drupal, debounce) {
+
+  'use strict';
+
+  var liveElement;
+  var announcements = [];
+
+  /**
+   * Builds a div element with the aria-live attribute and add it to the DOM.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches the behavior for drupalAnnouce.
+   */
+  Drupal.behaviors.drupalAnnounce = {
+    attach: function (context) {
+      // Create only one aria-live element.
+      if (!liveElement) {
+        liveElement = document.createElement('div');
+        liveElement.id = 'drupal-live-announce';
+        liveElement.className = 'visually-hidden';
+        liveElement.setAttribute('aria-live', 'polite');
+        liveElement.setAttribute('aria-busy', 'false');
+        document.body.appendChild(liveElement);
+      }
+    }
+  };
+
+  /**
+   * Concatenates announcements to a single string; appends to the live region.
+   */
+  function announce() {
+    var text = [];
+    var priority = 'polite';
+    var announcement;
+
+    // Create an array of announcement strings to be joined and appended to the
+    // aria live region.
+    var il = announcements.length;
+    for (var i = 0; i < il; i++) {
+      announcement = announcements.pop();
+      text.unshift(announcement.text);
+      // If any of the announcements has a priority of assertive then the group
+      // of joined announcements will have this priority.
+      if (announcement.priority === 'assertive') {
+        priority = 'assertive';
+      }
+    }
+
+    if (text.length) {
+      // Clear the liveElement so that repeated strings will be read.
+      liveElement.innerHTML = '';
+      // Set the busy state to true until the node changes are complete.
+      liveElement.setAttribute('aria-busy', 'true');
+      // Set the priority to assertive, or default to polite.
+      liveElement.setAttribute('aria-live', priority);
+      // Print the text to the live region. Text should be run through
+      // Drupal.t() before being passed to Drupal.announce().
+      liveElement.innerHTML = text.join('\n');
+      // The live text area is updated. Allow the AT to announce the text.
+      liveElement.setAttribute('aria-busy', 'false');
+    }
+  }
+
+  /**
+   * Triggers audio UAs to read the supplied text.
+   *
+   * The aria-live region will only read the text that currently populates its
+   * text node. Replacing text quickly in rapid calls to announce results in
+   * only the text from the most recent call to {@link Drupal.announce} being
+   * read. By wrapping the call to announce in a debounce function, we allow for
+   * time for multiple calls to {@link Drupal.announce} to queue up their
+   * messages. These messages are then joined and append to the aria-live region
+   * as one text node.
+   *
+   * @param {string} text
+   *   A string to be read by the UA.
+   * @param {string} [priority='polite']
+   *   A string to indicate the priority of the message. Can be either
+   *   'polite' or 'assertive'.
+   *
+   * @return {function}
+   *   The return of the call to debounce.
+   *
+   * @see http://www.w3.org/WAI/PF/aria-practices/#liveprops
+   */
+  Drupal.announce = function (text, priority) {
+    // Save the text and priority into a closure variable. Multiple simultaneous
+    // announcements will be concatenated and read in sequence.
+    announcements.push({
+      text: text,
+      priority: priority
+    });
+    // Immediately invoke the function that debounce returns. 200 ms is right at
+    // the cusp where humans notice a pause, so we will wait
+    // at most this much time before the set of queued announcements is read.
+    return (debounce(announce, 200)());
+  };
+}(Drupal, Drupal.debounce));

core/misc/announce.js

 /**
- * @file
- * Adds an HTML element and method to trigger audio UAs to read system messages.
- *
- * Use {@link Drupal.announce} to indicate to screen reader users that an
- * element on the page has changed state. For instance, if clicking a link
- * loads 10 more items into a list, one might announce the change like this.
- *
- * @example
- * $('#search-list')
- *   .on('itemInsert', function (event, data) {
- *     // Insert the new items.
- *     $(data.container.el).append(data.items.el);
- *     // Announce the change to the page contents.
- *     Drupal.announce(Drupal.t('@count items added to @container',
- *       {'@count': data.items.length, '@container': data.container.title}
- *     ));
- *   });
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/announce.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function (Drupal, debounce) {
 
@@ -25,17 +13,8 @@
   var liveElement;
   var announcements = [];
 
-  /**
-   * Builds a div element with the aria-live attribute and add it to the DOM.
-   *
-   * @type {Drupal~behavior}
-   *
-   * @prop {Drupal~behaviorAttach} attach
-   *   Attaches the behavior for drupalAnnouce.
-   */
   Drupal.behaviors.drupalAnnounce = {
-    attach: function (context) {
-      // Create only one aria-live element.
+    attach: function attach(context) {
       if (!liveElement) {
         liveElement = document.createElement('div');
         liveElement.id = 'drupal-live-announce';
@@ -47,74 +26,40 @@
     }
   };
 
-  /**
-   * Concatenates announcements to a single string; appends to the live region.
-   */
   function announce() {
     var text = [];
     var priority = 'polite';
     var announcement;
 
-    // Create an array of announcement strings to be joined and appended to the
-    // aria live region.
     var il = announcements.length;
     for (var i = 0; i < il; i++) {
       announcement = announcements.pop();
       text.unshift(announcement.text);
-      // If any of the announcements has a priority of assertive then the group
-      // of joined announcements will have this priority.
+
       if (announcement.priority === 'assertive') {
         priority = 'assertive';
       }
     }
 
     if (text.length) {
-      // Clear the liveElement so that repeated strings will be read.
       liveElement.innerHTML = '';
-      // Set the busy state to true until the node changes are complete.
+
       liveElement.setAttribute('aria-busy', 'true');
-      // Set the priority to assertive, or default to polite.
+
       liveElement.setAttribute('aria-live', priority);
-      // Print the text to the live region. Text should be run through
-      // Drupal.t() before being passed to Drupal.announce().
+
       liveElement.innerHTML = text.join('\n');
-      // The live text area is updated. Allow the AT to announce the text.
+
       liveElement.setAttribute('aria-busy', 'false');
     }
   }
 
-  /**
-   * Triggers audio UAs to read the supplied text.
-   *
-   * The aria-live region will only read the text that currently populates its
-   * text node. Replacing text quickly in rapid calls to announce results in
-   * only the text from the most recent call to {@link Drupal.announce} being
-   * read. By wrapping the call to announce in a debounce function, we allow for
-   * time for multiple calls to {@link Drupal.announce} to queue up their
-   * messages. These messages are then joined and append to the aria-live region
-   * as one text node.
-   *
-   * @param {string} text
-   *   A string to be read by the UA.
-   * @param {string} [priority='polite']
-   *   A string to indicate the priority of the message. Can be either
-   *   'polite' or 'assertive'.
-   *
-   * @return {function}
-   *   The return of the call to debounce.
-   *
-   * @see http://www.w3.org/WAI/PF/aria-practices/#liveprops
-   */
   Drupal.announce = function (text, priority) {
-    // Save the text and priority into a closure variable. Multiple simultaneous
-    // announcements will be concatenated and read in sequence.
     announcements.push({
       text: text,
       priority: priority
     });
-    // Immediately invoke the function that debounce returns. 200 ms is right at
-    // the cusp where humans notice a pause, so we will wait
-    // at most this much time before the set of queued announcements is read.
-    return (debounce(announce, 200)());
+
+    return debounce(announce, 200)();
   };
-}(Drupal, Drupal.debounce));
+})(Drupal, Drupal.debounce);
\ No newline at end of file

core/misc/autocomplete.es6.js

+/**
+ * @file
+ * Autocomplete based on jQuery UI.
+ */
+
+(function ($, Drupal) {
+
+  'use strict';
+
+  var autocomplete;
+
+  /**
+   * Helper splitting terms from the autocomplete value.
+   *
+   * @function Drupal.autocomplete.splitValues
+   *
+   * @param {string} value
+   *   The value being entered by the user.
+   *
+   * @return {Array}
+   *   Array of values, split by comma.
+   */
+  function autocompleteSplitValues(value) {
+    // We will match the value against comma-separated terms.
+    var result = [];
+    var quote = false;
+    var current = '';
+    var valueLength = value.length;
+    var character;
+
+    for (var i = 0; i < valueLength; i++) {
+      character = value.charAt(i);
+      if (character === '"') {
+        current += character;
+        quote = !quote;
+      }
+      else if (character === ',' && !quote) {
+        result.push(current.trim());
+        current = '';
+      }
+      else {
+        current += character;
+      }
+    }
+    if (value.length > 0) {
+      result.push($.trim(current));
+    }
+
+    return result;
+  }
+
+  /**
+   * Returns the last value of an multi-value textfield.
+   *
+   * @function Drupal.autocomplete.extractLastTerm
+   *
+   * @param {string} terms
+   *   The value of the field.
+   *
+   * @return {string}
+   *   The last value of the input field.
+   */
+  function extractLastTerm(terms) {
+    return autocomplete.splitValues(terms).pop();
+  }
+
+  /**
+   * The search handler is called before a search is performed.
+   *
+   * @function Drupal.autocomplete.options.search
+   *
+   * @param {object} event
+   *   The event triggered.
+   *
+   * @return {bool}
+   *   Whether to perform a search or not.
+   */
+  function searchHandler(event) {
+    var options = autocomplete.options;
+
+    if (options.isComposing) {
+      return false;
+    }
+
+    var term = autocomplete.extractLastTerm(event.target.value);
+    // Abort search if the first character is in firstCharacterBlacklist.
+    if (term.length > 0 && options.firstCharacterBlacklist.indexOf(term[0]) !== -1) {
+      return false;
+    }
+    // Only search when the term is at least the minimum length.
+    return term.length >= options.minLength;
+  }
+
+  /**
+   * JQuery UI autocomplete source callback.
+   *
+   * @param {object} request
+   *   The request object.
+   * @param {function} response
+   *   The function to call with the response.
+   */
+  function sourceData(request, response) {
+    var elementId = this.element.attr('id');
+
+    if (!(elementId in autocomplete.cache)) {
+      autocomplete.cache[elementId] = {};
+    }
+
+    /**
+     * Filter through the suggestions removing all terms already tagged and
+     * display the available terms to the user.
+     *
+     * @param {object} suggestions
+     *   Suggestions returned by the server.
+     */
+    function showSuggestions(suggestions) {
+      var tagged = autocomplete.splitValues(request.term);
+      var il = tagged.length;
+      for (var i = 0; i < il; i++) {
+        var index = suggestions.indexOf(tagged[i]);
+        if (index >= 0) {
+          suggestions.splice(index, 1);
+        }
+      }
+      response(suggestions);
+    }
+
+    /**
+     * Transforms the data object into an array and update autocomplete results.
+     *
+     * @param {object} data
+     *   The data sent back from the server.
+     */
+    function sourceCallbackHandler(data) {
+      autocomplete.cache[elementId][term] = data;
+
+      // Send the new string array of terms to the jQuery UI list.
+      showSuggestions(data);
+    }
+
+    // Get the desired term and construct the autocomplete URL for it.
+    var term = autocomplete.extractLastTerm(request.term);
+
+    // Check if the term is already cached.
+    if (autocomplete.cache[elementId].hasOwnProperty(term)) {
+      showSuggestions(autocomplete.cache[elementId][term]);
+    }
+    else {
+      var options = $.extend({success: sourceCallbackHandler, data: {q: term}}, autocomplete.ajax);
+      $.ajax(this.element.attr('data-autocomplete-path'), options);
+    }
+  }
+
+  /**
+   * Handles an autocompletefocus event.
+   *
+   * @return {bool}
+   *   Always returns false.
+   */
+  function focusHandler() {
+    return false;
+  }
+
+  /**
+   * Handles an autocompleteselect event.
+   *
+   * @param {jQuery.Event} event
+   *   The event triggered.
+   * @param {object} ui
+   *   The jQuery UI settings object.
+   *
+   * @return {bool}
+   *   Returns false to indicate the event status.
+   */
+  function selectHandler(event, ui) {
+    var terms = autocomplete.splitValues(event.target.value);
+    // Remove the current input.
+    terms.pop();
+    // Add the selected item.
+    if (ui.item.value.search(',') > 0) {
+      terms.push('"' + ui.item.value + '"');
+    }
+    else {
+      terms.push(ui.item.value);
+    }
+    event.target.value = terms.join(', ');
+    // Return false to tell jQuery UI that we've filled in the value already.
+    return false;
+  }
+
+  /**
+   * Override jQuery UI _renderItem function to output HTML by default.
+   *
+   * @param {jQuery} ul
+   *   jQuery collection of the ul element.
+   * @param {object} item
+   *   The list item to append.
+   *
+   * @return {jQuery}
+   *   jQuery collection of the ul element.
+   */
+  function renderItem(ul, item) {
+    return $('<li>')
+      .append($('<a>').html(item.label))
+      .appendTo(ul);
+  }
+
+  /**
+   * Attaches the autocomplete behavior to all required fields.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches the autocomplete behaviors.
+   * @prop {Drupal~behaviorDetach} detach
+   *   Detaches the autocomplete behaviors.
+   */
+  Drupal.behaviors.autocomplete = {
+    attach: function (context) {
+      // Act on textfields with the "form-autocomplete" class.
+      var $autocomplete = $(context).find('input.form-autocomplete').once('autocomplete');
+      if ($autocomplete.length) {
+        // Allow options to be overriden per instance.
+        var blacklist = $autocomplete.attr('data-autocomplete-first-character-blacklist');
+        $.extend(autocomplete.options, {
+          firstCharacterBlacklist: (blacklist) ? blacklist : ''
+        });
+        // Use jQuery UI Autocomplete on the textfield.
+        $autocomplete.autocomplete(autocomplete.options)
+          .each(function () {
+            $(this).data('ui-autocomplete')._renderItem = autocomplete.options.renderItem;
+          });
+
+        // Use CompositionEvent to handle IME inputs. It requests remote server on "compositionend" event only.
+        $autocomplete.on('compositionstart.autocomplete', function () {
+          autocomplete.options.isComposing = true;
+        });
+        $autocomplete.on('compositionend.autocomplete', function () {
+          autocomplete.options.isComposing = false;
+        });
+      }
+    },
+    detach: function (context, settings, trigger) {
+      if (trigger === 'unload') {
+        $(context).find('input.form-autocomplete')
+          .removeOnce('autocomplete')
+          .autocomplete('destroy');
+      }
+    }
+  };
+
+  /**
+   * Autocomplete object implementation.
+   *
+   * @namespace Drupal.autocomplete
+   */
+  autocomplete = {
+    cache: {},
+    // Exposes options to allow overriding by contrib.
+    splitValues: autocompleteSplitValues,
+    extractLastTerm: extractLastTerm,
+    // jQuery UI autocomplete options.
+
+    /**
+     * JQuery UI option object.
+     *
+     * @name Drupal.autocomplete.options
+     */
+    options: {
+      source: sourceData,
+      focus: focusHandler,
+      search: searchHandler,
+      select: selectHandler,
+      renderItem: renderItem,
+      minLength: 1,
+      // Custom options, used by Drupal.autocomplete.
+      firstCharacterBlacklist: '',
+      // Custom options, indicate IME usage status.
+      isComposing: false
+    },
+    ajax: {
+      dataType: 'json'
+    }
+  };
+
+  Drupal.autocomplete = autocomplete;
+
+})(jQuery, Drupal);

core/misc/autocomplete.js

 /**
- * @file
- * Autocomplete based on jQuery UI.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/autocomplete.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function ($, Drupal) {
 
@@ -9,19 +12,7 @@
 
   var autocomplete;
 
-  /**
-   * Helper splitting terms from the autocomplete value.
-   *
-   * @function Drupal.autocomplete.splitValues
-   *
-   * @param {string} value
-   *   The value being entered by the user.
-   *
-   * @return {Array}
-   *   Array of values, split by comma.
-   */
   function autocompleteSplitValues(value) {
-    // We will match the value against comma-separated terms.
     var result = [];
     var quote = false;
     var current = '';
@@ -33,12 +24,10 @@
       if (character === '"') {
         current += character;
         quote = !quote;
-      }
-      else if (character === ',' && !quote) {
+      } else if (character === ',' && !quote) {
         result.push(current.trim());
         current = '';
-      }
-      else {
+      } else {
         current += character;
       }
     }
@@ -49,32 +38,10 @@
     return result;
   }
 
-  /**
-   * Returns the last value of an multi-value textfield.
-   *
-   * @function Drupal.autocomplete.extractLastTerm
-   *
-   * @param {string} terms
-   *   The value of the field.
-   *
-   * @return {string}
-   *   The last value of the input field.
-   */
   function extractLastTerm(terms) {
     return autocomplete.splitValues(terms).pop();
   }
 
-  /**
-   * The search handler is called before a search is performed.
-   *
-   * @function Drupal.autocomplete.options.search
-   *
-   * @param {object} event
-   *   The event triggered.
-   *
-   * @return {bool}
-   *   Whether to perform a search or not.
-   */
   function searchHandler(event) {
     var options = autocomplete.options;
 
@@ -83,22 +50,14 @@
     }
 
     var term = autocomplete.extractLastTerm(event.target.value);
-    // Abort search if the first character is in firstCharacterBlacklist.
+
     if (term.length > 0 && options.firstCharacterBlacklist.indexOf(term[0]) !== -1) {
       return false;
     }
-    // Only search when the term is at least the minimum length.
+
     return term.length >= options.minLength;
   }
 
-  /**
-   * JQuery UI autocomplete source callback.
-   *
-   * @param {object} request
-   *   The request object.
-   * @param {function} response
-   *   The function to call with the response.
-   */
   function sourceData(request, response) {
     var elementId = this.element.attr('id');
 
@@ -106,13 +65,6 @@
       autocomplete.cache[elementId] = {};
     }
 
-    /**
-     * Filter through the suggestions removing all terms already tagged and
-     * display the available terms to the user.
-     *
-     * @param {object} suggestions
-     *   Suggestions returned by the server.
-     */
     function showSuggestions(suggestions) {
       var tagged = autocomplete.splitValues(request.term);
       var il = tagged.length;
@@ -125,113 +77,58 @@
       response(suggestions);
     }
 
-    /**
-     * Transforms the data object into an array and update autocomplete results.
-     *
-     * @param {object} data
-     *   The data sent back from the server.
-     */
     function sourceCallbackHandler(data) {
       autocomplete.cache[elementId][term] = data;
 
-      // Send the new string array of terms to the jQuery UI list.
       showSuggestions(data);
     }
 
-    // Get the desired term and construct the autocomplete URL for it.
     var term = autocomplete.extractLastTerm(request.term);
 
-    // Check if the term is already cached.
     if (autocomplete.cache[elementId].hasOwnProperty(term)) {
       showSuggestions(autocomplete.cache[elementId][term]);
-    }
-    else {
-      var options = $.extend({success: sourceCallbackHandler, data: {q: term}}, autocomplete.ajax);
+    } else {
+      var options = $.extend({ success: sourceCallbackHandler, data: { q: term } }, autocomplete.ajax);
       $.ajax(this.element.attr('data-autocomplete-path'), options);
     }
   }
 
-  /**
-   * Handles an autocompletefocus event.
-   *
-   * @return {bool}
-   *   Always returns false.
-   */
   function focusHandler() {
     return false;
   }
 
-  /**
-   * Handles an autocompleteselect event.
-   *
-   * @param {jQuery.Event} event
-   *   The event triggered.
-   * @param {object} ui
-   *   The jQuery UI settings object.
-   *
-   * @return {bool}
-   *   Returns false to indicate the event status.
-   */
   function selectHandler(event, ui) {
     var terms = autocomplete.splitValues(event.target.value);
-    // Remove the current input.
+
     terms.pop();
-    // Add the selected item.
+
     if (ui.item.value.search(',') > 0) {
       terms.push('"' + ui.item.value + '"');
-    }
-    else {
+    } else {
       terms.push(ui.item.value);
     }
     event.target.value = terms.join(', ');
-    // Return false to tell jQuery UI that we've filled in the value already.
+
     return false;
   }
 
-  /**
-   * Override jQuery UI _renderItem function to output HTML by default.
-   *
-   * @param {jQuery} ul
-   *   jQuery collection of the ul element.
-   * @param {object} item
-   *   The list item to append.
-   *
-   * @return {jQuery}
-   *   jQuery collection of the ul element.
-   */
   function renderItem(ul, item) {
-    return $('<li>')
-      .append($('<a>').html(item.label))
-      .appendTo(ul);
+    return $('<li>').append($('<a>').html(item.label)).appendTo(ul);
   }
 
-  /**
-   * Attaches the autocomplete behavior to all required fields.
-   *
-   * @type {Drupal~behavior}
-   *
-   * @prop {Drupal~behaviorAttach} attach
-   *   Attaches the autocomplete behaviors.
-   * @prop {Drupal~behaviorDetach} detach
-   *   Detaches the autocomplete behaviors.
-   */
   Drupal.behaviors.autocomplete = {
-    attach: function (context) {
-      // Act on textfields with the "form-autocomplete" class.
+    attach: function attach(context) {
       var $autocomplete = $(context).find('input.form-autocomplete').once('autocomplete');
       if ($autocomplete.length) {
-        // Allow options to be overriden per instance.
         var blacklist = $autocomplete.attr('data-autocomplete-first-character-blacklist');
         $.extend(autocomplete.options, {
-          firstCharacterBlacklist: (blacklist) ? blacklist : ''
+          firstCharacterBlacklist: blacklist ? blacklist : ''
+        });
+
+        $autocomplete.autocomplete(autocomplete.options).each(function () {
+          $(this).data('ui-autocomplete')._renderItem = autocomplete.options.renderItem;
         });
-        // Use jQuery UI Autocomplete on the textfield.
-        $autocomplete.autocomplete(autocomplete.options)
-          .each(function () {
-            $(this).data('ui-autocomplete')._renderItem = autocomplete.options.renderItem;
-          });
 
-        // Use CompositionEvent to handle IME inputs. It requests remote server on "compositionend" event only.
         $autocomplete.on('compositionstart.autocomplete', function () {
           autocomplete.options.isComposing = true;
         });
@@ -240,32 +137,19 @@
         });
       }
     },
-    detach: function (context, settings, trigger) {
+    detach: function detach(context, settings, trigger) {
       if (trigger === 'unload') {
-        $(context).find('input.form-autocomplete')
-          .removeOnce('autocomplete')
-          .autocomplete('destroy');
+        $(context).find('input.form-autocomplete').removeOnce('autocomplete').autocomplete('destroy');
       }
     }
   };
 
-  /**
-   * Autocomplete object implementation.
-   *
-   * @namespace Drupal.autocomplete
-   */
   autocomplete = {
     cache: {},
-    // Exposes options to allow overriding by contrib.
+
     splitValues: autocompleteSplitValues,
     extractLastTerm: extractLastTerm,
-    // jQuery UI autocomplete options.
 
-    /**
-     * JQuery UI option object.
-     *
-     * @name Drupal.autocomplete.options
-     */
     options: {
       source: sourceData,
       focus: focusHandler,
@@ -273,9 +157,9 @@
       select: selectHandler,
       renderItem: renderItem,
       minLength: 1,
-      // Custom options, used by Drupal.autocomplete.
+
       firstCharacterBlacklist: '',
-      // Custom options, indicate IME usage status.
+
       isComposing: false
     },
     ajax: {
@@ -284,5 +168,4 @@
   };
 
   Drupal.autocomplete = autocomplete;
-
-})(jQuery, Drupal);
+})(jQuery, Drupal);
\ No newline at end of file

core/misc/batch.es6.js

+/**
+ * @file
+ * Drupal's batch API.
+ */
+
+(function ($, Drupal) {
+
+  'use strict';
+
+  /**
+   * Attaches the batch behavior to progress bars.
+   *
+   * @type {Drupal~behavior}
+   */
+  Drupal.behaviors.batch = {
+    attach: function (context, settings) {
+      var batch = settings.batch;
+      var $progress = $('[data-drupal-progress]').once('batch');
+      var progressBar;
+
+      // Success: redirect to the summary.
+      function updateCallback(progress, status, pb) {
+        if (progress === '100') {
+          pb.stopMonitoring();
+          window.location = batch.uri + '&op=finished';
+        }
+      }
+
+      function errorCallback(pb) {
+        $progress.prepend($('<p class="error"></p>').html(batch.errorMessage));
+        $('#wait').hide();
+      }
+
+      if ($progress.length) {
+        progressBar = new Drupal.ProgressBar('updateprogress', updateCallback, 'POST', errorCallback);
+        progressBar.setProgress(-1, batch.initMessage);
+        progressBar.startMonitoring(batch.uri + '&op=do', 10);
+        // Remove HTML from no-js progress bar.
+        $progress.empty();
+        // Append the JS progressbar element.
+        $progress.append(progressBar.element);
+      }
+    }
+  };
+
+})(jQuery, Drupal);

core/misc/batch.js

 /**
- * @file
- * Drupal's batch API.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/batch.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function ($, Drupal) {
 
   'use strict';
 
-  /**
-   * Attaches the batch behavior to progress bars.
-   *
-   * @type {Drupal~behavior}
-   */
   Drupal.behaviors.batch = {
-    attach: function (context, settings) {
+    attach: function attach(context, settings) {
       var batch = settings.batch;
       var $progress = $('[data-drupal-progress]').once('batch');
       var progressBar;
 
-      // Success: redirect to the summary.
       function updateCallback(progress, status, pb) {
         if (progress === '100') {
           pb.stopMonitoring();
@@ -35,12 +32,11 @@
         progressBar = new Drupal.ProgressBar('updateprogress', updateCallback, 'POST', errorCallback);
         progressBar.setProgress(-1, batch.initMessage);
         progressBar.startMonitoring(batch.uri + '&op=do', 10);
-        // Remove HTML from no-js progress bar.
+
         $progress.empty();
-        // Append the JS progressbar element.
+
         $progress.append(progressBar.element);
       }
     }
   };
-
-})(jQuery, Drupal);
+})(jQuery, Drupal);
\ No newline at end of file

core/misc/collapse.es6.js

+/**
+ * @file
+ * Polyfill for HTML5 details elements.
+ */
+
+(function ($, Modernizr, Drupal) {
+
+  'use strict';
+
+  /**
+   * The collapsible details object represents a single details element.
+   *
+   * @constructor Drupal.CollapsibleDetails
+   *
+   * @param {HTMLElement} node
+   *   The details element.
+   */
+  function CollapsibleDetails(node) {
+    this.$node = $(node);
+    this.$node.data('details', this);
+    // Expand details if there are errors inside, or if it contains an
+    // element that is targeted by the URI fragment identifier.
+    var anchor = location.hash && location.hash !== '#' ? ', ' + location.hash : '';
+    if (this.$node.find('.error' + anchor).length) {
+      this.$node.attr('open', true);
+    }
+    // Initialize and setup the summary,
+    this.setupSummary();
+    // Initialize and setup the legend.
+    this.setupLegend();
+  }
+
+  $.extend(CollapsibleDetails, /** @lends Drupal.CollapsibleDetails */{
+
+    /**
+     * Holds references to instantiated CollapsibleDetails objects.
+     *
+     * @type {Array.<Drupal.CollapsibleDetails>}
+     */
+    instances: []
+  });
+
+  $.extend(CollapsibleDetails.prototype, /** @lends Drupal.CollapsibleDetails# */{
+
+    /**
+     * Initialize and setup summary events and markup.
+     *
+     * @fires event:summaryUpdated
+     *
+     * @listens event:summaryUpdated
+     */
+    setupSummary: function () {
+      this.$summary = $('<span class="summary"></span>');
+      this.$node
+        .on('summaryUpdated', $.proxy(this.onSummaryUpdated, this))
+        .trigger('summaryUpdated');
+    },
+
+    /**
+     * Initialize and setup legend markup.
+     */
+    setupLegend: function () {
+      // Turn the summary into a clickable link.
+      var $legend = this.$node.find('> summary');
+
+      $('<span class="details-summary-prefix visually-hidden"></span>')
+        .append(this.$node.attr('open') ? Drupal.t('Hide') : Drupal.t('Show'))
+        .prependTo($legend)
+        .after(document.createTextNode(' '));
+
+      // .wrapInner() does not retain bound events.
+      $('<a class="details-title"></a>')
+        .attr('href', '#' + this.$node.attr('id'))
+        .prepend($legend.contents())
+        .appendTo($legend);
+
+      $legend
+        .append(this.$summary)
+        .on('click', $.proxy(this.onLegendClick, this));
+    },
+
+    /**
+     * Handle legend clicks.
+     *
+     * @param {jQuery.Event} e
+     *   The event triggered.
+     */
+    onLegendClick: function (e) {
+      this.toggle();
+      e.preventDefault();
+    },
+
+    /**
+     * Update summary.
+     */
+    onSummaryUpdated: function () {
+      var text = $.trim(this.$node.drupalGetSummary());
+      this.$summary.html(text ? ' (' + text + ')' : '');
+    },
+
+    /**
+     * Toggle the visibility of a details element using smooth animations.
+     */
+    toggle: function () {
+      var isOpen = !!this.$node.attr('open');
+      var $summaryPrefix = this.$node.find('> summary span.details-summary-prefix');
+      if (isOpen) {
+        $summaryPrefix.html(Drupal.t('Show'));
+      }
+      else {
+        $summaryPrefix.html(Drupal.t('Hide'));
+      }
+      // Delay setting the attribute to emulate chrome behavior and make
+      // details-aria.js work as expected with this polyfill.
+      setTimeout(function () {
+        this.$node.attr('open', !isOpen);
+      }.bind(this), 0);
+    }
+  });
+
+  /**
+   * Polyfill HTML5 details element.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches behavior for the details element.
+   */
+  Drupal.behaviors.collapse = {
+    attach: function (context) {
+      if (Modernizr.details) {
+        return;
+      }
+      var $collapsibleDetails = $(context).find('details').once('collapse').addClass('collapse-processed');
+      if ($collapsibleDetails.length) {
+        for (var i = 0; i < $collapsibleDetails.length; i++) {
+          CollapsibleDetails.instances.push(new CollapsibleDetails($collapsibleDetails[i]));
+        }
+      }
+    }
+  };
+
+  // Expose constructor in the public space.
+  Drupal.CollapsibleDetails = CollapsibleDetails;
+
+})(jQuery, Modernizr, Drupal);

core/misc/collapse.js

 /**
- * @file
- * Polyfill for HTML5 details elements.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/collapse.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function ($, Modernizr, Drupal) {
 
   'use strict';
 
-  /**
-   * The collapsible details object represents a single details element.
-   *
-   * @constructor Drupal.CollapsibleDetails
-   *
-   * @param {HTMLElement} node
-   *   The details element.
-   */
   function CollapsibleDetails(node) {
     this.$node = $(node);
     this.$node.data('details', this);
-    // Expand details if there are errors inside, or if it contains an
-    // element that is targeted by the URI fragment identifier.
+
     var anchor = location.hash && location.hash !== '#' ? ', ' + location.hash : '';
     if (this.$node.find('.error' + anchor).length) {
       this.$node.attr('open', true);
     }
-    // Initialize and setup the summary,
+
     this.setupSummary();
-    // Initialize and setup the legend.
+
     this.setupLegend();
   }
 
-  $.extend(CollapsibleDetails, /** @lends Drupal.CollapsibleDetails */{
-
-    /**
-     * Holds references to instantiated CollapsibleDetails objects.
-     *
-     * @type {Array.<Drupal.CollapsibleDetails>}
-     */
+  $.extend(CollapsibleDetails, {
     instances: []
   });
 
-  $.extend(CollapsibleDetails.prototype, /** @lends Drupal.CollapsibleDetails# */{
-
-    /**
-     * Initialize and setup summary events and markup.
-     *
-     * @fires event:summaryUpdated
-     *
-     * @listens event:summaryUpdated
-     */
-    setupSummary: function () {
+  $.extend(CollapsibleDetails.prototype, {
+    setupSummary: function setupSummary() {
       this.$summary = $('<span class="summary"></span>');
-      this.$node
-        .on('summaryUpdated', $.proxy(this.onSummaryUpdated, this))
-        .trigger('summaryUpdated');
+      this.$node.on('summaryUpdated', $.proxy(this.onSummaryUpdated, this)).trigger('summaryUpdated');
     },
 
-    /**
-     * Initialize and setup legend markup.
-     */
-    setupLegend: function () {
-      // Turn the summary into a clickable link.
+    setupLegend: function setupLegend() {
       var $legend = this.$node.find('> summary');
 
-      $('<span class="details-summary-prefix visually-hidden"></span>')
-        .append(this.$node.attr('open') ? Drupal.t('Hide') : Drupal.t('Show'))
-        .prependTo($legend)
-        .after(document.createTextNode(' '));
+      $('<span class="details-summary-prefix visually-hidden"></span>').append(this.$node.attr('open') ? Drupal.t('Hide') : Drupal.t('Show')).prependTo($legend).after(document.createTextNode(' '));
 
-      // .wrapInner() does not retain bound events.
-      $('<a class="details-title"></a>')
-        .attr('href', '#' + this.$node.attr('id'))
-        .prepend($legend.contents())
-        .appendTo($legend);
+      $('<a class="details-title"></a>').attr('href', '#' + this.$node.attr('id')).prepend($legend.contents()).appendTo($legend);
 
-      $legend
-        .append(this.$summary)
-        .on('click', $.proxy(this.onLegendClick, this));
+      $legend.append(this.$summary).on('click', $.proxy(this.onLegendClick, this));
     },
 
-    /**
-     * Handle legend clicks.
-     *
-     * @param {jQuery.Event} e
-     *   The event triggered.
-     */
-    onLegendClick: function (e) {
+    onLegendClick: function onLegendClick(e) {
       this.toggle();
       e.preventDefault();
     },
 
-    /**
-     * Update summary.
-     */
-    onSummaryUpdated: function () {
+    onSummaryUpdated: function onSummaryUpdated() {
       var text = $.trim(this.$node.drupalGetSummary());
       this.$summary.html(text ? ' (' + text + ')' : '');
     },
 
-    /**
-     * Toggle the visibility of a details element using smooth animations.
-     */
-    toggle: function () {
+    toggle: function toggle() {
       var isOpen = !!this.$node.attr('open');
       var $summaryPrefix = this.$node.find('> summary span.details-summary-prefix');
       if (isOpen) {
         $summaryPrefix.html(Drupal.t('Show'));
-      }
-      else {
+      } else {
         $summaryPrefix.html(Drupal.t('Hide'));
       }
-      // Delay setting the attribute to emulate chrome behavior and make
-      // details-aria.js work as expected with this polyfill.
+
       setTimeout(function () {
         this.$node.attr('open', !isOpen);
       }.bind(this), 0);
     }
   });
 
-  /**
-   * Polyfill HTML5 details element.
-   *
-   * @type {Drupal~behavior}
-   *
-   * @prop {Drupal~behaviorAttach} attach
-   *   Attaches behavior for the details element.
-   */
   Drupal.behaviors.collapse = {
-    attach: function (context) {
+    attach: function attach(context) {
       if (Modernizr.details) {
         return;
       }
@@ -140,7 +83,5 @@
     }
   };
 
-  // Expose constructor in the public space.
   Drupal.CollapsibleDetails = CollapsibleDetails;
-
-})(jQuery, Modernizr, Drupal);
+})(jQuery, Modernizr, Drupal);
\ No newline at end of file

core/misc/date.es6.js

+/**
+ * @file
+ * Polyfill for HTML5 date input.
+ */
+
+(function ($, Modernizr, Drupal) {
+
+  'use strict';
+
+  /**
+   * Attach datepicker fallback on date elements.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches the behavior. Accepts in `settings.date` an object listing
+   *   elements to process, keyed by the HTML ID of the form element containing
+   *   the human-readable value. Each element is an datepicker settings object.
+   * @prop {Drupal~behaviorDetach} detach
+   *   Detach the behavior destroying datepickers on effected elements.
+   */
+  Drupal.behaviors.date = {
+    attach: function (context, settings) {
+      var $context = $(context);
+      // Skip if date are supported by the browser.
+      if (Modernizr.inputtypes.date === true) {
+        return;
+      }
+      $context.find('input[data-drupal-date-format]').once('datePicker').each(function () {
+        var $input = $(this);
+        var datepickerSettings = {};
+        var dateFormat = $input.data('drupalDateFormat');
+        // The date format is saved in PHP style, we need to convert to jQuery
+        // datepicker.
+        datepickerSettings.dateFormat = dateFormat
+          .replace('Y', 'yy')
+          .replace('m', 'mm')
+          .replace('d', 'dd');
+        // Add min and max date if set on the input.
+        if ($input.attr('min')) {
+          datepickerSettings.minDate = $input.attr('min');
+        }
+        if ($input.attr('max')) {
+          datepickerSettings.maxDate = $input.attr('max');
+        }
+        $input.datepicker(datepickerSettings);
+      });
+    },
+    detach: function (context, settings, trigger) {
+      if (trigger === 'unload') {
+        $(context).find('input[data-drupal-date-format]').findOnce('datePicker').datepicker('destroy');
+      }
+    }
+  };
+
+})(jQuery, Modernizr, Drupal);

core/misc/date.js

 /**
- * @file
- * Polyfill for HTML5 date input.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/date.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function ($, Modernizr, Drupal) {
 
   'use strict';
 
-  /**
-   * Attach datepicker fallback on date elements.
-   *
-   * @type {Drupal~behavior}
-   *
-   * @prop {Drupal~behaviorAttach} attach
-   *   Attaches the behavior. Accepts in `settings.date` an object listing
-   *   elements to process, keyed by the HTML ID of the form element containing
-   *   the human-readable value. Each element is an datepicker settings object.
-   * @prop {Drupal~behaviorDetach} detach
-   *   Detach the behavior destroying datepickers on effected elements.
-   */
   Drupal.behaviors.date = {
-    attach: function (context, settings) {
+    attach: function attach(context, settings) {
       var $context = $(context);
-      // Skip if date are supported by the browser.
+
       if (Modernizr.inputtypes.date === true) {
         return;
       }
@@ -30,13 +21,9 @@
         var $input = $(this);
         var datepickerSettings = {};
         var dateFormat = $input.data('drupalDateFormat');
-        // The date format is saved in PHP style, we need to convert to jQuery
-        // datepicker.
-        datepickerSettings.dateFormat = dateFormat
-          .replace('Y', 'yy')
-          .replace('m', 'mm')
-          .replace('d', 'dd');
-        // Add min and max date if set on the input.
+
+        datepickerSettings.dateFormat = dateFormat.replace('Y', 'yy').replace('m', 'mm').replace('d', 'dd');
+
         if ($input.attr('min')) {
           datepickerSettings.minDate = $input.attr('min');
         }
@@ -46,11 +33,10 @@
         $input.datepicker(datepickerSettings);
       });
     },
-    detach: function (context, settings, trigger) {
+    detach: function detach(context, settings, trigger) {
       if (trigger === 'unload') {
         $(context).find('input[data-drupal-date-format]').findOnce('datePicker').datepicker('destroy');
       }
     }
   };
-
-})(jQuery, Modernizr, Drupal);
+})(jQuery, Modernizr, Drupal);
\ No newline at end of file

core/misc/debounce.es6.js

+/**
+ * @file
+ * Adapted from underscore.js with the addition Drupal namespace.
+ */
+
+/**
+ * Limits the invocations of a function in a given time frame.
+ *
+ * The debounce function wrapper should be used sparingly. One clear use case
+ * is limiting the invocation of a callback attached to the window resize event.
+ *
+ * Before using the debounce function wrapper, consider first whether the
+ * callback could be attached to an event that fires less frequently or if the
+ * function can be written in such a way that it is only invoked under specific
+ * conditions.
+ *
+ * @param {function} func
+ *   The function to be invoked.
+ * @param {number} wait
+ *   The time period within which the callback function should only be
+ *   invoked once. For example if the wait period is 250ms, then the callback
+ *   will only be called at most 4 times per second.
+ * @param {bool} immediate
+ *   Whether we wait at the beginning or end to execute the function.
+ *
+ * @return {function}
+ *   The debounced function.
+ */
+Drupal.debounce = function (func, wait, immediate) {
+
+  'use strict';
+
+  var timeout;
+  var result;
+  return function () {
+    var context = this;
+    var args = arguments;
+    var later = function () {
+      timeout = null;
+      if (!immediate) {
+        result = func.apply(context, args);
+      }
+    };
+    var callNow = immediate && !timeout;
+    clearTimeout(timeout);
+    timeout = setTimeout(later, wait);
+    if (callNow) {
+      result = func.apply(context, args);
+    }
+    return result;
+  };
+};

core/misc/debounce.js

 /**
- * @file
- * Adapted from underscore.js with the addition Drupal namespace.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/debounce.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
-/**
- * Limits the invocations of a function in a given time frame.
- *
- * The debounce function wrapper should be used sparingly. One clear use case
- * is limiting the invocation of a callback attached to the window resize event.
- *
- * Before using the debounce function wrapper, consider first whether the
- * callback could be attached to an event that fires less frequently or if the
- * function can be written in such a way that it is only invoked under specific
- * conditions.
- *
- * @param {function} func
- *   The function to be invoked.
- * @param {number} wait
- *   The time period within which the callback function should only be
- *   invoked once. For example if the wait period is 250ms, then the callback
- *   will only be called at most 4 times per second.
- * @param {bool} immediate
- *   Whether we wait at the beginning or end to execute the function.
- *
- * @return {function}
- *   The debounced function.
- */
 Drupal.debounce = function (func, wait, immediate) {
 
   'use strict';
@@ -35,7 +15,7 @@ Drupal.debounce = function (func, wait, immediate) {
   return function () {
     var context = this;
     var args = arguments;
-    var later = function () {
+    var later = function later() {
       timeout = null;
       if (!immediate) {
         result = func.apply(context, args);
@@ -49,4 +29,4 @@ Drupal.debounce = function (func, wait, immediate) {
     }
     return result;
   };
-};
+};
\ No newline at end of file

core/misc/details-aria.es6.js

+/**
+ * @file
+ * Add aria attribute handling for details and summary elements.
+ */
+
+(function ($, Drupal) {
+
+  'use strict';
+
+  /**
+   * Handles `aria-expanded` and `aria-pressed` attributes on details elements.
+   *
+   * @type {Drupal~behavior}
+   */
+  Drupal.behaviors.detailsAria = {
+    attach: function () {
+      $('body').once('detailsAria').on('click.detailsAria', 'summary', function (event) {
+        var $summary = $(event.currentTarget);
+        var open = $(event.currentTarget.parentNode).attr('open') === 'open' ? 'false' : 'true';
+
+        $summary.attr({
+          'aria-expanded': open,
+          'aria-pressed': open
+        });
+      });
+    }
+  };
+
+})(jQuery, Drupal);

core/misc/details-aria.js

 /**
- * @file
- * Add aria attribute handling for details and summary elements.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/details-aria.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function ($, Drupal) {
 
   'use strict';
 
-  /**
-   * Handles `aria-expanded` and `aria-pressed` attributes on details elements.
-   *
-   * @type {Drupal~behavior}
-   */
   Drupal.behaviors.detailsAria = {
-    attach: function () {
+    attach: function attach() {
       $('body').once('detailsAria').on('click.detailsAria', 'summary', function (event) {
         var $summary = $(event.currentTarget);
         var open = $(event.currentTarget.parentNode).attr('open') === 'open' ? 'false' : 'true';
@@ -25,5 +23,4 @@
       });
     }
   };
-
-})(jQuery, Drupal);
+})(jQuery, Drupal);
\ No newline at end of file

core/misc/dialog/dialog.ajax.es6.js

+/**
+ * @file
+ * Extends the Drupal AJAX functionality to integrate the dialog API.
+ */
+
+(function ($, Drupal) {
+
+  'use strict';
+
+  /**
+   * Initialize dialogs for Ajax purposes.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches the behaviors for dialog ajax functionality.
+   */
+  Drupal.behaviors.dialog = {
+    attach: function (context, settings) {
+      var $context = $(context);
+
+      // Provide a known 'drupal-modal' DOM element for Drupal-based modal
+      // dialogs. Non-modal dialogs are responsible for creating their own
+      // elements, since there can be multiple non-modal dialogs at a time.
+      if (!$('#drupal-modal').length) {
+        // Add 'ui-front' jQuery UI class so jQuery UI widgets like autocomplete
+        // sit on top of dialogs. For more information see
+        // http://api.jqueryui.com/theming/stacking-elements/.
+        $('<div id="drupal-modal" class="ui-front"/>').hide().appendTo('body');
+      }
+
+      // Special behaviors specific when attaching content within a dialog.
+      // These behaviors usually fire after a validation error inside a dialog.
+      var $dialog = $context.closest('.ui-dialog-content');
+      if ($dialog.length) {
+        // Remove and replace the dialog buttons with those from the new form.
+        if ($dialog.dialog('option', 'drupalAutoButtons')) {
+          // Trigger an event to detect/sync changes to buttons.
+          $dialog.trigger('dialogButtonsChange');
+        }
+
+        // Force focus on the modal when the behavior is run.
+        $dialog.dialog('widget').trigger('focus');
+      }
+
+      var originalClose = settings.dialog.close;
+      // Overwrite the close method to remove the dialog on closing.
+      settings.dialog.close = function (event) {
+        originalClose.apply(settings.dialog, arguments);
+        $(event.target).remove();
+      };
+    },
+
+    /**
+     * Scan a dialog for any primary buttons and move them to the button area.
+     *
+     * @param {jQuery} $dialog
+     *   An jQuery object containing the element that is the dialog target.
+     *
+     * @return {Array}
+     *   An array of buttons that need to be added to the button area.
+     */
+    prepareDialogButtons: function ($dialog) {
+      var buttons = [];
+      var $buttons = $dialog.find('.form-actions input[type=submit], .form-actions a.button');
+      $buttons.each(function () {
+        // Hidden form buttons need special attention. For browser consistency,
+        // the button needs to be "visible" in order to have the enter key fire
+        // the form submit event. So instead of a simple "hide" or
+        // "display: none", we set its dimensions to zero.
+        // See http://mattsnider.com/how-forms-submit-when-pressing-enter/
+        var $originalButton = $(this).css({
+          display: 'block',
+          width: 0,
+          height: 0,
+          padding: 0,
+          border: 0,
+          overflow: 'hidden'
+        });
+        buttons.push({
+          text: $originalButton.html() || $originalButton.attr('value'),
+          class: $originalButton.attr('class'),
+          click: function (e) {
+            // If the original button is an anchor tag, triggering the "click"
+            // event will not simulate a click. Use the click method instead.
+            if ($originalButton.is('a')) {
+              $originalButton[0].click();
+            }
+            else {
+              $originalButton.trigger('mousedown').trigger('mouseup').trigger('click');
+              e.preventDefault();
+            }
+          }
+        });
+      });
+      return buttons;
+    }
+  };
+
+  /**
+   * Command to open a dialog.
+   *
+   * @param {Drupal.Ajax} ajax
+   *   The Drupal Ajax object.
+   * @param {object} response
+   *   Object holding the server response.
+   * @param {number} [status]
+   *   The HTTP status code.
+   *
+   * @return {bool|undefined}
+   *   Returns false if there was no selector property in the response object.
+   */
+  Drupal.AjaxCommands.prototype.openDialog = function (ajax, response, status) {
+    if (!response.selector) {
+      return false;
+    }
+    var $dialog = $(response.selector);
+    if (!$dialog.length) {
+      // Create the element if needed.
+      $dialog = $('<div id="' + response.selector.replace(/^#/, '') + '" class="ui-front"/>').appendTo('body');
+    }
+    // Set up the wrapper, if there isn't one.
+    if (!ajax.wrapper) {
+      ajax.wrapper = $dialog.attr('id');
+    }
+
+    // Use the ajax.js insert command to populate the dialog contents.
+    response.command = 'insert';
+    response.method = 'html';
+    ajax.commands.insert(ajax, response, status);
+
+    // Move the buttons to the jQuery UI dialog buttons area.
+    if (!response.dialogOptions.buttons) {
+      response.dialogOptions.drupalAutoButtons = true;
+      response.dialogOptions.buttons = Drupal.behaviors.dialog.prepareDialogButtons($dialog);
+    }
+
+    // Bind dialogButtonsChange.
+    $dialog.on('dialogButtonsChange', function () {
+      var buttons = Drupal.behaviors.dialog.prepareDialogButtons($dialog);
+      $dialog.dialog('option', 'buttons', buttons);
+    });
+
+    // Open the dialog itself.
+    response.dialogOptions = response.dialogOptions || {};
+    var dialog = Drupal.dialog($dialog.get(0), response.dialogOptions);
+    if (response.dialogOptions.modal) {
+      dialog.showModal();
+    }
+    else {
+      dialog.show();
+    }
+
+    // Add the standard Drupal class for buttons for style consistency.
+    $dialog.parent().find('.ui-dialog-buttonset').addClass('form-actions');
+  };
+
+  /**
+   * Command to close a dialog.
+   *
+   * If no selector is given, it defaults to trying to close the modal.
+   *
+   * @param {Drupal.Ajax} [ajax]
+   *   The ajax object.
+   * @param {object} response
+   *   Object holding the server response.
+   * @param {string} response.selector
+   *   The selector of the dialog.
+   * @param {bool} response.persist
+   *   Whether to persist the dialog element or not.
+   * @param {number} [status]
+   *   The HTTP status code.
+   */
+  Drupal.AjaxCommands.prototype.closeDialog = function (ajax, response, status) {
+    var $dialog = $(response.selector);
+    if ($dialog.length) {
+      Drupal.dialog($dialog.get(0)).close();
+      if (!response.persist) {
+        $dialog.remove();
+      }
+    }
+
+    // Unbind dialogButtonsChange.
+    $dialog.off('dialogButtonsChange');
+  };
+
+  /**
+   * Command to set a dialog property.
+   *
+   * JQuery UI specific way of setting dialog options.
+   *
+   * @param {Drupal.Ajax} [ajax]
+   *   The Drupal Ajax object.
+   * @param {object} response
+   *   Object holding the server response.
+   * @param {string} response.selector
+   *   Selector for the dialog element.
+   * @param {string} response.optionsName
+   *   Name of a key to set.
+   * @param {string} response.optionValue
+   *   Value to set.
+   * @param {number} [status]
+   *   The HTTP status code.
+   */
+  Drupal.AjaxCommands.prototype.setDialogOption = function (ajax, response, status) {
+    var $dialog = $(response.selector);
+    if ($dialog.length) {
+      $dialog.dialog('option', response.optionName, response.optionValue);
+    }
+  };
+
+  /**
+   * Binds a listener on dialog creation to handle the cancel link.
+   *
+   * @param {jQuery.Event} e
+   *   The event triggered.
+   * @param {Drupal.dialog~dialogDefinition} dialog
+   *   The dialog instance.
+   * @param {jQuery} $element
+   *   The jQuery collection of the dialog element.
+   * @param {object} [settings]
+   *   Dialog settings.
+   */
+  $(window).on('dialog:aftercreate', function (e, dialog, $element, settings) {
+    $element.on('click.dialog', '.dialog-cancel', function (e) {
+      dialog.close('cancel');
+      e.preventDefault();
+      e.stopPropagation();
+    });
+  });
+
+  /**
+   * Removes all 'dialog' listeners.
+   *
+   * @param {jQuery.Event} e
+   *   The event triggered.
+   * @param {Drupal.dialog~dialogDefinition} dialog
+   *   The dialog instance.
+   * @param {jQuery} $element
+   *   jQuery collection of the dialog element.
+   */
+  $(window).on('dialog:beforeclose', function (e, dialog, $element) {
+    $element.off('.dialog');
+  });
+
+})(jQuery, Drupal);

core/misc/dialog/dialog.ajax.js

 /**
- * @file
- * Extends the Drupal AJAX functionality to integrate the dialog API.
- */
+* DO NOT EDIT THIS FILE.
+* All changes should be applied to ./misc/dialog/dialog.ajax.es6.js
+* See the following change record for more information,
+* https://www.drupal.org/node/2873849
+* @preserve
+**/
 
 (function ($, Drupal) {
 
   'use strict';
 
-  /**
-   * Initialize dialogs for Ajax purposes.
-   *
-   * @type {Drupal~behavior}
-   *
-   * @prop {Drupal~behaviorAttach} attach
-   *   Attaches the behaviors for dialog ajax functionality.
-   */
   Drupal.behaviors.dialog = {
-    attach: function (context, settings) {
+    attach: function attach(context, settings) {
       var $context = $(context);
 
-      // Provide a known 'drupal-modal' DOM element for Drupal-based modal
-      // dialogs. Non-modal dialogs are responsible for creating their own
-      // elements, since there can be multiple non-modal dialogs at a time.
       if (!$('#drupal-modal').length) {
-        // Add 'ui-front' jQuery UI class so jQuery UI widgets like autocomplete
-        // sit on top of dialogs. For more information see
-        // http://api.jqueryui.com/theming/stacking-elements/.
         $('<div id="drupal-modal" class="ui-front"/>').hide().appendTo('body');
       }
 
-      // Special behaviors specific when attaching content within a dialog.
-      // These behaviors usually fire after a validation error inside a dialog.
       var $dialog = $context.closest('.ui-dialog-content');
       if ($dialog.length) {
-        // Remove and replace the dialog buttons with those from the new form.
         if ($dialog.dialog('option', 'drupalAutoButtons')) {
-          // Trigger an event to detect/sync changes to buttons.
           $dialog.trigger('dialogButtonsChange');
         }
 
-        // Force focus on the modal when the behavior is run.
         $dialog.dialog('widget').trigger('focus');
       }
 
       var originalClose = settings.dialog.close;
-      // Overwrite the close method to remove the dialog on closing.
+
       settings.dialog.close = function (event) {
         originalClose.apply(settings.dialog, arguments);
         $(event.target).remove();
       };
     },
 
-    /**
-     * Scan a dialog for any primary buttons and move them to the button area.
-     *
-     * @param {jQuery} $dialog
-     *   An jQuery object containing the element that is the dialog target.
-     *
-     * @return {Array}
-     *   An array of buttons that need to be added to the button area.
-     */
-    prepareDialogButtons: function ($dialog) {
+    prepareDialogButtons: function prepareDialogButtons($dialog) {
       var buttons = [];
       var $buttons = $dialog.find('.form-actions input[type=submit], .form-actions a.button');
       $buttons.each(function () {
-        // Hidden form buttons need special attention. For browser consistency,
-        // the button needs to be "visible" in order to have the enter key fire
-        // the form submit event. So instead of a simple "hide" or
-        // "display: none", we set its dimensions to zero.
-        // See http://mattsnider.com/how-forms-submit-when-pressing-enter/
         var $originalButton = $(this).css({
           display: 'block',
           width: 0,
@@ -80,13 +50,10 @@
         buttons.push({
           text: $originalButton.html() || $originalButton.attr('value'),
           class: $originalButton.attr('class'),
-          click: function (e) {
-            // If the original button is an anchor tag, triggering the "click"
-            // event will not simulate a click. Use the click method instead.
+          click: function click(e) {
             if ($originalButton.is('a')) {
               $originalButton[0].click();
-            }
-            else {
+            } else {
               $originalButton.trigger('mousedown').trigger('mouseup').trigger('click');
               e.preventDefault();
             }
@@ -97,80 +64,44 @@
     }
   };
 
-  /**
-   * Command to open a dialog.
-   *
-   * @param {Drupal.Ajax} ajax
-   *   The Drupal Ajax object.
-   * @param {object} response
-   *   Object holding the server response.
-   * @param {number} [status]
-   *   The HTTP status code.
-   *
-   * @return {bool|undefined}
-   *   Returns false if there was no selector property in the response object.
-   */
   Drupal.AjaxCommands.prototype.openDialog = function (ajax, response, status) {
     if (!response.selector) {
       return false;
     }
     var $dialog = $(response.selector);
     if (!$dialog.length) {
-      // Create the element if needed.
       $dialog = $('<div id="' + response.selector.replace(/^#/, '') + '" class="ui-front"/>').appendTo('body');
     }
-    // Set up the wrapper, if there isn't one.
+
     if (!ajax.wrapper) {
       ajax.wrapper = $dialog.attr('id');
     }
 
-    // Use the ajax.js insert command to populate the dialog contents.
     response.command = 'insert';
     response.method = 'html';
     ajax.commands.insert(ajax, response, status);
 
-    // Move the buttons to the jQuery UI dialog buttons area.
     if (!response.dialogOptions.buttons) {
       response.dialogOptions.drupalAutoButtons = true;
       response.dialogOptions.buttons = Drupal.behaviors.dialog.prepareDialogButtons($dialog);
     }
 
-    // Bind dialogButtonsChange.
     $dialog.on('dialogButtonsChange', function () {
       var buttons = Drupal.behaviors.dialog.prepareDialogButtons($dialog);
       $dialog.dialog('option', 'buttons', buttons);
     });
 
-    // Open the dialog itself.
     response.dialogOptions = response.dialogOptions || {};
     var dialog = Drupal.dialog($dialog.get(0), response.dialogOptions);
     if (response.dialogOptions.modal) {
       dialog.showModal();
-    }
-    else {
+    } else {
       dialog.show();
     }
 
-    // Add the standard Drupal class for buttons for style consistency.
     $dialog.parent().find('.ui-dialog-buttonset').addClass('form-actions');
   };
 
-  /**
-   * Command to close a dialog.
-   *
-   * If no selector is given, it defaults to trying to close the modal.
-   *
-   * @param {Drupal.Ajax} [ajax]
-   *   The ajax object.
-   * @param {object} response
-   *   Object holding the server response.
-   * @param {string} response.selector
-   *   The selector of the dialog.
-   * @param {bool} response.persist
-   *   Whether to persist the dialog element or not.
-   * @param {number} [status]
-   *   The HTTP status code.
-   */
   Drupal.AjaxCommands.prototype.closeDialog = function (ajax, response, status) {
     var $dialog = $(response.selector);
     if ($dialog.length) {
@@ -180,28 +111,9 @@
       }
     }
 
-    // Unbind dialogButtonsChange.
     $dialog.off('dialogButtonsChange');
   };
 
-  /**
-   * Command to set a dialog property.
-   *
-   * JQuery UI specific way of setting dialog options.
-   *
-   * @param {Drupal.Ajax} [ajax]
-   *   The Drupal Ajax object.
-   * @param {object} response
-   *   Object holding the server response.
-   * @param {string} response.selector
-   *   Selector for the dialog element.
-   * @param {string} response.optionsName
-   *   Name of a key to set.
-   * @param {string} response.optionValue
-   *   Value to set.
-   * @param {number} [status]
-   *   The HTTP status code.
-   */
   Drupal.AjaxCommands.prototype.setDialogOption = function (ajax, response, status) {
     var $dialog = $(response.selector);
     if ($dialog.length) {
@@ -209,18 +121,6 @@
     }
   };
 
-  /**
-   * Binds a listener on dialog creation to handle the cancel link.
-   *
-   * @param {jQuery.Event} e
-   *   The event triggered.
-   * @param {Drupal.dialog~dialogDefinition} dialog
-   *   The dialog instance.
-   * @param {jQuery} $element
-   *   The jQuery collection of the dialog element.
-   * @param {object} [settings]
-   *   Dialog settings.
-   */
   $(window).on('dialog:aftercreate', function (e, dialog, $element, settings) {
     $element.on('click.dialog', '.dialog-cancel', function (e) {
       dialog.close('cancel');
@@ -229,18 +129,7 @@
     });
   });
 
-  /**
-   * Removes all 'dialog' listeners.
-   *
-   * @param {jQuery.Event} e
-   *   The event triggered.
-   * @param {Drupal.dialog~dialogDefinition} dialog
-   *   The dialog instance.
-   * @param {jQuery} $element
-   *   jQuery collection of the dialog element.
-   */
   $(window).on('dialog:beforeclose', function (e, dialog, $element) {
     $element.off('.dialog');
   });
-
-})(jQuery, Drupal);
+})(jQuery, Drupal);
\ No newline at end of file