🚨 deprecated, new example at firebase-gcp-examples

Next.js SSR app on Cloud Functions for Firebase with Firebase Hosting

Host a Next.js SSR React app on Cloud Functions for Firebase with Firebase Hosting.

Here is the accompanying Medium PostA new post is being written to describe the new project structure, Firebase partial deployments, Firebase support of pre/post-deploy hooks and what problems these new features solve.

Why?

Host your SSR Next.js app on Cloud Functions enabling a low-cost, auto-scaling SSR app experience leveraging Firebase's sweet developer experience.

How?

Firebase Hosting can rewrite routes to a Cloud Function that serves our Server-side Rendered Next.js app. Using a rewrite rule that catches ALL routes we can then host our SSR app on our Firebase Hosting URL instead of the Firebase Cloud Function URL.

instead of:

https://us-central1-.cloudfunctions.net/

we can use:

.firebaseapp.com/

Next.js can then be used to achieve SSR React with Hot-Module Reloading, server and client-side routing, route level code-splitting, route prefetching and more!

A number of issues with Hosting SSR on Firebase were overcome with this method. Please refer to the Medium Post before creating issues here.

Important!

• This example uses

  firebase-tools

  as a devDependency which is run from the

  node_modules/.bin/

  folder via

  yarn

  . Yarn will run scripts from either the

  package.json

  or binary scripts from

  node_modules/.bin/

  .

  npm run

  does not check the

  .bin

  folder for executables, so if you use

  npm

  you will either have to change the scripts to explicitly run the

  firebase

  binary from

  node_modules/.bin/

  or install

  firebase-tools

  globally and remove it from the devDeps list. Have a look at the Next.js repo's example for how I recommend using

  npm

  .

• Ensure you're running Node

  6.11.5

  as the functions emulator requires this. I recommend asdf as a version manager and have add an asdf

  .tool-versions

  file to define the Node runtime.

• If using

  _app.js

  you may receive the following error on your deployed Cloud Function:

  { Error: Cannot find module '@babel/runtime/regenerator'...
  

  Despite next.js having

  @babel/runtime

  as a dependency, you must install it as a dependency directly in this project.

Installation

git clone https://github.com/jthegedus/firebase-functions-next-example
cd firebase-functions-next-example
yarn install

Login to Firebase CLI

This is used as a dev-dependency instead of a global install. I've found this to be a much nicer dev experience.

yarn fblogin

Next.js Development

Standard Next.js development with Hot-module Reloading etc

yarn dev

Local Testing

yarn serve

This finally works now! Note: you must have a valid Firebase project id defined in the

.firebaserc

serve

For those who want to dig deeper into what's actually happening here run this command:

yarn serve --debug

Deploy to Firebase

You will need to connect the project to your Firebase project. Edit the name in .firebaserc or run

firebase init

Deploy Hosting resources and the rewrite Cloud Function

yarn deploy-app

Deploy functions not used for the SSR

Deploy all functions specified in the function group. Edit this script to add more function groups. - see Partial deploys docs for how to use function groups.

yarn deploy-funcs

Deploy everything to Firebase

yarn deploy-all

Clean

dist

Folder

yarn clean

A note on Code Compatibility

Everything was tested on Ubuntu 17.04 with Bash. This should work on Bash on Ubuntu on Windows without any changes. If you wish for Windows native support please submit an issue so we can work on Windows compatibility. Please report any macOS errors as I do not have access to a device to test. My development environment can be found here.