Pass Awesomplete instance back out of setup method

This restores the prior behavior in index.js of storing the
Awesomplete instance on Index.awesomeplete. That reference wasn't
ever used AFAICT, but it might as well stay.

public/js/common.js

@@ -60,9 +60,12 @@ LRR.getTagSearchURL = function (namespace, tag) {
 };
 
 /**
- * Load tag suggestions for the tag search bar.
+ * Load tag suggestions for the tag search bar. input_tag is the
+ * selector to pass to the Awesomeplete constructor. instance_cb, if
+ * provided, will be invoked after construction with the Awesomeplete
+ * instance as argument.
  */
-LRR.setupTagSearchAutocomplete = function (input_tag) {
+LRR.setupTagSearchAutocomplete = function (input_tag, instance_cb) {
     // Query the tag cloud API to get the most used tags.
     Server.callAPI("/api/database/stats?minweight=2", "GET", null, "Couldn't load tag suggestions",
         (data) => {
@@ -75,8 +78,7 @@ LRR.setupTagSearchAutocomplete = function (input_tag) {
             });
 
             // Setup awesomplete for the tag search bar
-            // Index.awesomplete =
-            new Awesomplete(input_tag, {
+            let inst = new Awesomplete(input_tag, {
                 list: data,
                 data(tag) {
                     // Format tag objects from the API into a format awesomplete likes.
@@ -100,6 +102,10 @@ LRR.setupTagSearchAutocomplete = function (input_tag) {
                     this.input.value = `${before + text}$, `;
                 },
             });
+
+            if (instance_cb) {
+                instance_cb(inst);
+            }
         },
     );
 };

public/js/index.js

@@ -4,6 +4,7 @@
  */
 const Index = {};
 Index.selectedCategory = "";
+Index.awesomplete = {};
 Index.carouselInitialized = false;
 Index.swiper = {};
 Index.serverVersion = "";
@@ -114,7 +115,7 @@ Index.initializeAll = function () {
             }
 
             Index.migrateProgress();
-            LRR.setupTagSearchAutocomplete('#search-input');
+            LRR.setupTagSearchAutocomplete('#search-input', (inst) => { Index.awesomplete = inst; });
             Index.loadCategories();
 
             // Initialize DataTables