Update with-firebase-hosting. (#3032)

Simplify scripts.

examples/with-firebase-hosting/README.md

@@ -15,13 +15,16 @@ It is recommended to use a package manager that uses a lockfile and caching for
 - [pnpm](https://github.com/pnpm/pnpm)
 
 Set up firebase:
+- install Firebase Tools: `npm i -g firebase-tools`
 - create a project through the [firebase web console](https://console.firebase.google.com/)
 - grab the projects ID from the web consoles URL: https://console.firebase.google.com/project/<projectId>
 - update the `.firebaserc` default project ID to the newly created project
 
 Install project:
 
-Each of the other commands pre-installs all dependencies
+```bash
+npm install
+```
 
 Run Next.js development:
 
@@ -35,7 +38,7 @@ Run Firebase locally for testing:
 npm run serve
 ```
 
-Deploy it to the cloud with Firebase
+Deploy it to the cloud with Firebase:
 
 ```bash
 npm run deploy
@@ -46,7 +49,7 @@ The goal is to host the Next.js app on Firebase Cloud Functions with Firebase Ho
 
 This is based off of the work at https://github.com/geovanisouza92/serverless-firebase & https://github.com/jthegedus/firebase-functions-next-example as described [here](https://medium.com/@jthegedus/next-js-on-cloud-functions-for-firebase-with-firebase-hosting-7911465298f2).
 
-## Important & Caveats
+## Important / Caveats
 *   The empty `placeholder.html` file is so Firebase Hosting does not error on an empty `public/` folder and still hosts at the Firebase project URL.
 *   `firebase.json` outlines the catchall rewrite rule for our Cloud Function.
 *   Testing on Firebase locally requires a complete build of the Next.js app. `npm run serve` handles everything required.

examples/with-firebase-hosting/app/package.json

 {
   "name": "app",
-  "version": "1.0.0",
+  "description": "Next.js React SSR App",
   "dependencies": {
-    "next": "beta",
-    "react": "^15.6.1",
-    "react-dom": "^15.6.1"
+    "next": "4.0.0-beta.2",
+    "react": "16.0.0",
+    "react-dom": "16.0.0"
   },
   "scripts": {
     "dev": "next",

examples/with-firebase-hosting/functions/package.json

 {
   "name": "functions",
   "description": "Cloud Functions for Firebase",
-  "version": "1.0.0",
   "dependencies": {
-    "firebase-admin": "^5.0.1",
-    "firebase-functions": "^0.6.0",
-    "next": "beta",
-    "react": "^15.6.1",
-    "react-dom": "^15.6.1"
-  },
-  "private": true
+    "firebase-admin": "5.3.0",
+    "firebase-functions": "0.6.3",
+    "next": "4.0.0-beta.2",
+    "react": "16.0.0",
+    "react-dom": "16.0.0"
+  }
 }

examples/with-firebase-hosting/package.json

 {
   "name": "with-firebase-hosting",
-  "version": "1.0.0",
-  "description": "Host Next.js SSR app on Firebase Cloud Functions with Firebase Hosting redirects.",
+  "version": "2.0.0",
+  "description":
+    "Host Next.js SSR app on Firebase Cloud Functions with Firebase Hosting redirects.",
   "scripts": {
-    "next": "npm run build-firebase && cd \"app\" && npm i && npm run dev",
+    "install-app": "cd \"app/\" && npm i",
+    "install-functions": "cd \"functions/\" && npm i",
+    "postinstall": "npm run install-app && npm run install-functions",
+    "next": "cd \"app\" && npm run dev",
     "preserve": "npm run build-all",
     "serve": "firebase serve",
     "predeploy": "npm run build-all",
@@ -11,10 +15,5 @@
     "build-all": "npm run build-next && npm run build-firebase",
     "build-next": "cd \"app\" && npm i && npm run build",
     "build-firebase": "cd \"functions\" && npm i"
-  },
-  "dependencies": {
-    "next": "^3.0.1-beta.8",
-    "react": "^15.6.1",
-    "react-dom": "^15.6.1"
   }
 }