DEV: Convert helpers to native class syntax (#27279)

app/assets/javascripts/discourse/app/helpers/route-action.js

@@ -45,14 +45,13 @@ function routeAction(actionName, router, ...params) {
   };
 }
 
-export default Helper.extend({
-  router: computed({
-    get() {
-      return getOwner(this).lookup("router:main");
-    },
-  }),
+export default class RouteAction extends Helper {
+  @computed
+  get router() {
+    return getOwner(this).lookup("router:main");
+  }
 
   compute([actionName, ...params]) {
     return routeAction(actionName, get(this, "router"), ...params);
-  },
-});
+  }
+}

app/assets/javascripts/discourse/app/helpers/topic-status-icons.js

@@ -1,6 +1,6 @@
 import ArrayProxy from "@ember/array/proxy";
 
-export default ArrayProxy.extend({
+class TopicStatusIconArrayProxy extends ArrayProxy {
   render(topic, renderIcon) {
     const renderIconIf = (conditionProp, name, key) => {
       if (!topic.get(conditionProp)) {
@@ -17,8 +17,10 @@ export default ArrayProxy.extend({
     }
 
     this.forEach((args) => renderIconIf(...args));
-  },
-}).create({
+  }
+}
+
+export default TopicStatusIconArrayProxy.create({
   content: [
     ["is_warning", "envelope", "warning"],
     ["pinned", "thumbtack", "pinned"],