How to add Basic Auth in Next.js apps with Firebase Hosting and SSR

Overview

Next.js has no method for Basic Auth. So we gonna use Express.js.
Also I'll use template: with-firebase-hosting-and-typescript.

Require:

• Node.js v10.x.x
• firebase-tools@latest

Steps

Set up Next.js app

We check this README.

# bash

yarn create next-app --example with-firebase-hosting-and-typescript with-firebase-hosting-and-typescript-app

Install modules

• express
• @types/express
• next-routes
• basic-auth-connect

# bash

yarn add express next-routes basic-auth-connect

bash

# bash

yarn add -D @types/express

Error handling

(If you get this error)

Error: > Couldn't find a `pages` directory. Please create one under the project root

We gonna fix functions, because this template can't deploy firebase functions. (Apr 1st.2020)

// src/functions/index.ts

const app = next({ dev, conf: { distDir: 'next' } })

↓

// src/functions/index.ts

const app = next({ dev: false, conf: { distDir: 'next' } })

Develop

// src/functions/index.ts

import * as functions from 'firebase-functions';
import next from 'next';
import express from 'express';

/* eslint-disable @typescript-eslint/no-var-requires */
const routes = require('next-routes');
const basicAuth = require('basic-auth-connect');

const USERNAME = 'user';
const PASSWORD = 'password';

const server = express();

const app = next({ dev: false, conf: { distDir: 'next' } });
const handler = routes().getRequestHandler(app);
server.use(basicAuth(USERNAME, PASSWORD));
server.get('*', (req, res) => handler(req, res));

export const nextApp = functions.https.onRequest(server);

Set up Firebase Project

We gonna change this: <project-name-here> to our firebase project name.

# .firebaserc

{
  "projects": {
    "default": "<project-name-here>"
  }
}

Run

At local

We gonna use firebase-emulators for testing on local.

Build

yarn preserve

Run

firebase emulators:start

Deploy

firebase deploy

Have fun ☺️
Thanks.

Comments

[Ignacio Tonoli]

Error: > Couldn't find a 'pages' directory. Please create one under the project root

This error comes from the fact that you don't have a env variable to set to production. There is a way to set environment variables in firabase: firebase.google.com/docs/functions...