Issue #3307339: Fix tag editing functionality

        tagify.settings.enforceWhitelist = !$(this).hasClass("autocreate");

        tagify.settings.skipInvalid = !!$(this).hasClass("autocreate");

        tagify.settings.maxTags = $(this).hasClass("limited") ? 1 : Infinity;

        // Enables filtering dropdown items values by string containing and not only beginning.

        tagify.settings.dropdown.fuzzySearch = true;

        // Bind "DragSort" to Tagify's main element and tell

        // it that all the items with the below "selector" are "draggable".

          tagify.updateValueByDOMTags()

        }

        // onInput event.

        var onInput = Drupal.debounce(function (e) {

          var value = e.detail.value;

        function handleAutocomplete(value){

          tagify.whitelist = null;

          // https://developer.mozilla.org/en-US/docs/Web/API/AbortController/abort

          controller && controller.abort();

          controller = new AbortController();

          // Show loading animation meanwhile the dropdown suggestions are hided.

          tagify.loading(true);

          fetch($(input).attr('data-autocomplete-url') + '?q=' + encodeURIComponent(value), {signal: controller.signal})

              tagify.whitelist = newWhitelistData; // update whitelist Array in-place

              tagify.loading(false).dropdown.show(value) // render the suggestions dropdown

            });

        }

        // onInput event.

        var onInput = Drupal.debounce(function (e) {

          var value = e.detail.value;

          handleAutocomplete(value);

        }, 500);

        // tag added callback

        function onAddTag(e){

          tagify.off('add', onAddTag) // exmaple of removing a custom Tagify event

        }

        // onEditInput event.

        var onEditInput = Drupal.debounce(function (e) {

          var value = e.detail.data.newValue;

          handleAutocomplete(value);

        }, 500);

        // listen to any keystrokes which modify tagify's input

        // Edit input event (When user is editing the tag).

        tagify.on('edit:input', onEditInput)

        // Input event (When user is creating the tag).

        tagify.on('input', onInput)

      });

    }

  /**

   * {@inheritdoc}

   */

  public function setUp() {

  public function setUp(): void {

    parent::setUp();

    // Create a new content type.

    $this->drupalCreateContentType(['type' => 'test']);