Rename search-frontend.js to search-main.js

Also move DisplaySearch creation into the main() function.

ext/bg/js/search-main.js

@@ -16,6 +16,7 @@
  */
 
 /* global
+ * DisplaySearch
  * apiOptionsGet
  */
 
@@ -54,6 +55,9 @@ function injectSearchFrontend() {
 async function main() {
     await yomichan.prepare();
 
+    const displaySearch = new DisplaySearch();
+    await displaySearch.prepare();
+
     let optionsApplied = false;
 
     const applyOptions = async () => {

ext/bg/js/search.js

@@ -72,12 +72,6 @@ class DisplaySearch extends Display {
         ]);
     }
 
-    static create() {
-        const instance = new DisplaySearch();
-        instance.prepare();
-        return instance;
-    }
-
     async prepare() {
         try {
             await super.prepare();
@@ -376,5 +370,3 @@ class DisplaySearch extends Display {
         }
     }
 }
-
-DisplaySearch.instance = DisplaySearch.create();

ext/bg/search.html

@@ -94,6 +94,7 @@
         <script src="/bg/js/search-query-parser.js"></script>
         <script src="/bg/js/clipboard-monitor.js"></script>
         <script src="/bg/js/search.js"></script>
-        <script src="/bg/js/search-frontend.js"></script>
+
+        <script src="/bg/js/search-main.js"></script>
     </body>
 </html>