Next.js Firebase Hosting 404 error on all except index.html

Question

I've built a nextjs app, with npm run build && npm run export and deployed to firebase using firebase deploy command. Prior to that, I've used firebase init in my project folder with just using the default options eg. not a single page application.

After I go and visit my project in firebase provided url however, I see the home page which is index.html, but whenever I use any other slug it throws a 404. Why this is happening ? I`ve included my firebase.json file, in case it might help.

firebase.json

  "hosting": {
    "public": "out",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ]
  }
}

Answer 1

With the rules you have Firebase Hosting serves the exact file that the user requested.

To rewrite other/all URLs to your index.html, you'll need to add a rewrite rule to your firebase.json. A typical rewrite rule for single-page applications may look like this:

"hosting": {
  // ...

  // Serves index.html for requests to files or directories that do not exist
  "rewrites": [ {
    "source": "**",
    "destination": "/index.html"
  } ]
}