Firebase hosting: Serve different pages from different custom domains

Question

We're using custom domains on firebase hosting: our app, served from index.html, runs nicely on app.example.com. We've also connected www.example.com, which serves the app as well.

The problem is: on www.example.com I want to be able to host a simple static page. Is there a way to configure this in the rewrites? We can easily output an extra html file in the deploy, next to index.html.

Any ideas?

Our firebase.json:

{
  "database": {
    "rules": "database.rules.json"
  },
  "hosting": {
    "public": "public",
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}

Answer 1

Firebase Hosting does not support multiple sites in a single project at this time. However, you can create a second project for your static landing page and deploy it there, connecting it to the www domain while leaving the app domain connected to the other project.

As of August of 2018, Firebase Hosting supports multiple sites on a single project! See the docs for more info.