routes/application: Preload Rust Playground crates list after the app has been open for 1 sec

Author: Turbo87

app/routes/application.js

@@ -2,9 +2,12 @@ import { action } from '@ember/object';
 import Route from '@ember/routing/route';
 import { inject as service } from '@ember/service';
 
+import { didCancel, rawTimeout, task } from 'ember-concurrency';
+
 export default class ApplicationRoute extends Route {
   @service progress;
   @service session;
+  @service playground;
 
   beforeModel() {
     // trigger the task, but don't wait for the result here
@@ -15,10 +18,22 @@ export default class ApplicationRoute extends Route {
     //
     // eslint-disable-next-line ember-concurrency/no-perform-without-catch
     this.session.loadUserTask.perform();
+
+    // trigger the preload task, but don't wait for the task to finish.
+    this.preloadPlaygroundCratesTask.perform().catch(error => {
+      // ignore task cancellation errors
+      if (!didCancel(error)) throw error;
+    });
   }
 
   @action loading(transition) {
     this.progress.handle(transition);
     return true;
   }
+
+  @task(function* () {
+    yield rawTimeout(1000);
+    this.playground.loadCrates();
+  })
+  preloadPlaygroundCratesTask;
 }