migrate installations to component

Author: Feiyang1

packages/installations/src/index.ts

@@ -17,30 +17,34 @@
 
 import firebase from '@firebase/app';
 import {
-  _FirebaseNamespace,
-  FirebaseServiceFactory
+  _FirebaseNamespace
 } from '@firebase/app-types/private';
 import { FirebaseInstallations } from '@firebase/installations-types';
 
 import { deleteInstallation, getId, getToken } from './functions';
 import { extractAppConfig } from './helpers/extract-app-config';
+import { Provider, Component, ComponentType } from '@firebase/component';
+import { FirebaseApp } from '@firebase/app-types';
 
 export function registerInstallations(instance: _FirebaseNamespace): void {
   const installationsName = 'installations';
 
-  const factoryMethod: FirebaseServiceFactory = app => {
-    // Throws if app isn't configured properly.
-    extractAppConfig(app);
+  instance.INTERNAL.registerComponent(new Component(
+    installationsName,
+    container => {
+      const app = container.getProvider<FirebaseApp>('app').getImmediate()!;
+      // Throws if app isn't configured properly.
+      extractAppConfig(app);
 
-    return {
-      app,
-      getId: () => getId(app),
-      getToken: (forceRefresh?: boolean) => getToken(app, forceRefresh),
-      delete: () => deleteInstallation(app)
-    };
-  };
-
-  instance.INTERNAL.registerService(installationsName, factoryMethod);
+      return {
+        app,
+        getId: () => getId(app),
+        getToken: () => getToken(app),
+        delete: () => deleteInstallation(app)
+      };
+    },
+    ComponentType.PUBLIC
+  ));
 }
 
 registerInstallations(firebase as _FirebaseNamespace);
@@ -56,3 +60,9 @@ declare module '@firebase/app-types' {
     installations(): FirebaseInstallations;
   }
 }
+
+declare module '@firebase/component' {
+  interface ComponentContainer {
+    getProvider(name: 'installations'): Provider<FirebaseInstallations>;
+  }
+}