feat(core): Register AngularFire and Angular versions with the JS SDK

If the JS SDK has the `registerVersion` API, we should register the version of Angular and AngularFire.

Author: jamesdaniels

src/core/firebase.app.module.ts

@@ -1,4 +1,4 @@
-import { InjectionToken, NgModule, Optional, NgZone } from '@angular/core';
+import { InjectionToken, NgModule, Optional, NgZone, VERSION as NG_VERSION, Version, Inject, PLATFORM_ID } from '@angular/core';
 import { auth, database, messaging, storage, firestore, functions } from 'firebase/app';
 // @ts-ignore (https://github.com/firebase/firebase-js-sdk/pull/1206)
 import firebase from 'firebase/app'; // once fixed can pull in as "default as firebase" above
@@ -44,6 +44,8 @@ export class FirebaseApp {
     remoteConfig: () => FirebaseRemoteConfig;
 }
 
+export const VERSION = new Version('ANGULARFIRE2_VERSION');
+
 export function _firebaseAppFactory(options: FirebaseOptions, zone: NgZone, nameOrConfig?: string|FirebaseAppConfig|null) {
     const name = typeof nameOrConfig === 'string' && nameOrConfig || '[DEFAULT]';
     const config = typeof nameOrConfig === 'object' && nameOrConfig || {};
@@ -78,4 +80,10 @@ export class AngularFireModule {
             ]
         }
     }
+    constructor(@Inject(PLATFORM_ID) platformId:Object ) {
+        if (firebase.registerVersion) {
+            firebase.registerVersion('angularfire', VERSION.full, platformId.toString());
+            firebase.registerVersion('angular', NG_VERSION.full);
+        }
+    }
 }

tools/build.js

@@ -307,6 +307,12 @@ function replaceDynamicImportsForUMD() {
   writeFileSync('./dist/packages-dist/remote-config/remote-config.d.ts', readFileSync('./dist/packages-dist/remote-config/remote-config.d.ts', 'utf8').replace("implements remoteConfig.Value", "implements Partial<remoteConfig.Value>"));
 }
 
+function writeCoreVersion() {
+  writeFileSync('./dist/packages-dist/bundles/core.umd.js', readFileSync('./dist/packages-dist/bundles/core.umd.js', 'utf8').replace('ANGULARFIRE2_VERSION', VERSIONS.ANGULARFIRE2_VERSION));
+  writeFileSync('./dist/packages-dist/firebase.app.module.js', readFileSync('./dist/packages-dist/firebase.app.module.js', 'utf8').replace('ANGULARFIRE2_VERSION', VERSIONS.ANGULARFIRE2_VERSION));
+  writeFileSync('./dist/packages-dist/es2015/firebase.app.module.js', readFileSync('./dist/packages-dist/es2015/firebase.app.module.js', 'utf8').replace('ANGULARFIRE2_VERSION', VERSIONS.ANGULARFIRE2_VERSION));
+}
+
 function measure(module) {
   const path = `${process.cwd()}/dist/packages-dist/bundles/${module}.umd.js`;
   const file = readFileSync(path);
@@ -408,6 +414,7 @@ function buildLibrary(globals) {
     switchMap(() => from(createTestUmd(globals))),
     tap(() => {
       replaceDynamicImportsForUMD();
+      writeCoreVersion();
       const coreStats = measure('core');
       const analyticsStats = measure('analytics');
       const authStats = measure('auth');