feat(infra): framework

packages/common/infra/src/modules/lifecycle/index.ts

@@ -0,0 +1,12 @@
+import type { Framework } from '../../framework';
+import { LifecycleService } from './service/lifecycle';
+
+export {
+  ApplicationFocused,
+  ApplicationStarted,
+  LifecycleService,
+} from './service/lifecycle';
+
+export function configureLifecycleModule(framework: Framework) {
+  framework.service(LifecycleService);
+}

packages/common/infra/src/modules/lifecycle/service/lifecycle.ts

@@ -0,0 +1,26 @@
+import { createEvent, Service } from '../../../framework';
+
+/**
+ * Event that is emitted when application is started.
+ */
+export const ApplicationStarted = createEvent<boolean>('ApplicationStartup');
+
+/**
+ * Event that is emitted when browser tab or windows is focused again, after being blurred.
+ * Can be used to actively refresh some data.
+ */
+export const ApplicationFocused = createEvent<boolean>('ApplicationFocused');
+
+export class LifecycleService extends Service {
+  constructor() {
+    super();
+  }
+
+  applicationStart() {
+    this.eventBus.emit(ApplicationStarted, true);
+  }
+
+  applicationFocus() {
+    this.eventBus.emit(ApplicationFocused, true);
+  }
+}