Issue #3167437 by Akram Khan, alextars: Autocomplete field throbber visibility...

      once('claroAutoComplete', 'input.form-autocomplete', context).forEach(

        (value) => {

          const $input = $(value);

          const timeout = 400;

          let classRemoveTimeout;

          const classRemove = ($autoCompleteElem) => {

            $autoCompleteElem.removeClass('is-autocompleting');

            $autoCompleteElem

              .addClass('hidden');

          };

          $input.on(

            'input autocompletesearch autocompleteresponses',

            (event) => {

              if (event && event.type && event.type === 'autocompletesearch') {

          $input.on('autocompletesearch', (event) => {

            $(event.target).addClass('is-autocompleting');

            $(event.target)

              .siblings('[data-drupal-selector="autocomplete-message"]')

              .removeClass('hidden');

              }

              clearTimeout(classRemoveTimeout);

              classRemoveTimeout = setTimeout(

                classRemove,

                timeout,

                $(event.target),

              );

          });

          $input.autocomplete({

            response(event) {

              classRemove($(event.target));

            },

          );

          });

        },

      );

    },