feat(): Dependencies for Angular Universal

Added WS and xmlhttprequest as dependencies, as they are required to allow normal functions of the Firebase JS SDK in Universal. Created a new `angularfire/firebase-node` module, which includes these + will include any additional fixes for Universal in the future.

The rest of the SSR work is taking place in angular#1454.

Author: jamesdaniels

package.json

@@ -34,6 +34,7 @@
     "@angular/core": "^5.0.0",
     "@angular/platform-browser": "^5.0.0",
     "@angular/platform-browser-dynamic": "^5.0.0",
+    "bufferutil": "^3.0.3",
     "@firebase/app": "^0.1.6",
     "@firebase/app-types": "^0.1.1",
     "@firebase/auth": "^0.3.2",
@@ -47,7 +48,10 @@
     "@firebase/storage-types": "^0.1.1",
     "firebase": "^4.8.2",
     "rxjs": "^5.5.4",
-    "zone.js": "^0.8.0"
+    "utf-8-validate": "^4.0.0",
+    "ws": "^3.3.2",
+    "zone.js": "^0.8.0",
+    "xmlhttprequest": "^1.8.0"
   },
   "devDependencies": {
     "@angular/compiler-cli": "^5.0.0",

src/firebase-node/index.js

@@ -0,0 +1,4 @@
+// Patches for loading angularfire in a Universal Context
+
+global['WebSocket'] = require("ws");
+global['XMLHttpRequest'] = require("xmlhttprequest").XMLHttpRequest;

src/firebase-node/package.json

@@ -0,0 +1,25 @@
+{
+    "name": "angularfire2",
+    "version": "ANGULARFIRE2_VERSION",
+    "description": "Fixes for Node.js",
+    "main": "index.js",
+    "keywords": [
+      "angular",
+      "firebase",
+      "rxjs"
+    ],
+    "repository": {
+      "type": "git",
+      "url": "git+https://github.com/angular/angularfire2.git"
+    },
+    "author": "angular,firebase",
+    "license": "MIT",
+    "peerDependencies": {
+      "xmlhttprequest": "XMLHTTPREQUEST_VERSION",
+      "ws": "WS_VERSION",
+      "bufferutil": "BUFFERUTIL_VERSION",
+      "utf-8-validate": "UTF_8_VALIDATE_VERSION"
+    },
+    "typings": "index.d.ts"
+  }
+  

tools/build.js

@@ -87,7 +87,11 @@ const VERSIONS = {
   RXJS_VERSION: pkg.dependencies['rxjs'],
   ZONEJS_VERSION: pkg.dependencies['zone.js'],
   ANGULARFIRE2_VERSION: pkg.version,
-  FIRESTORE_VERSION: pkg.dependencies['firestore']
+  FIRESTORE_VERSION: pkg.dependencies['firestore'],
+  WS_VERSION: pkg.dependencies['ws'],
+  BUFFERUTIL_VERSION: pkg.dependencies['bufferutil'],
+  UTF_8_VALIDATE_VERSION: pkg.dependencies['utf-8-validate'],
+  XMLHTTPREQUEST_VERSION: pkg.dependencies['xmlhttprequest']
 };
 
 const MODULE_NAMES = {
@@ -114,6 +118,7 @@ const SRC_PKG_PATHS = {
   database: `${process.cwd()}/src/database/package.json`,
   "database-deprecated": `${process.cwd()}/src/database-deprecated/package.json`,
   firestore: `${process.cwd()}/src/firestore/package.json`,
+  "firebase-node": `${process.cwd()}/src/firebase-node/package.json`,
   storage: `${process.cwd()}/src/storage/package.json`
 };
 
@@ -123,6 +128,7 @@ const DEST_PKG_PATHS = {
   database: `${process.cwd()}/dist/packages-dist/database/package.json`,
   "database-deprecated": `${process.cwd()}/dist/packages-dist/database-deprecated/package.json`,
   firestore: `${process.cwd()}/dist/packages-dist/firestore/package.json`,
+  "firebase-node": `${process.cwd()}/dist/packages-dist/firebase-node/package.json`,
   storage: `${process.cwd()}/dist/packages-dist/storage/package.json`
 };
 
@@ -268,6 +274,10 @@ function copyDocs() {
   return copy(`${process.cwd()}/docs`, `${process.cwd()}/dist/packages-dist/docs`);
 }
 
+function copyNodeFixes() {
+  return copy(`${process.cwd()}/src/firebase-node`, `${process.cwd()}/dist/packages-dist/firebase-node`);
+}
+
 function measure(module) {
   const path = `${process.cwd()}/dist/packages-dist/bundles/${module}.umd.js`;
   const file = readFileSync(path);
@@ -286,6 +296,7 @@ function getVersions() {
     getDestPackageFile('auth'),
     getDestPackageFile('database'),
     getDestPackageFile('firestore'),
+    getDestPackageFile('firebase-node'),
     getDestPackageFile('storage'),
     getDestPackageFile('database-deprecated')
   ];
@@ -343,6 +354,8 @@ function buildLibrary(globals) {
     .switchMap(() => Observable.from(copyNpmIgnore()))
     .switchMap(() => Observable.from(copyReadme()))
     .switchMap(() => Observable.from(copyDocs()))
+    .switchMap(() => Observable.from(copyNodeFixes()))
+    .switchMap(() => replaceVersionsObservable('firebase-node', VERSIONS))
     .do(() => {
       const coreStats = measure('core');
       const authStats = measure('auth');