Firebase default hosting domains: only .firebaseapp.com works but .web.app fails

Question

I'm building a very simple one-page react application using typescript. I tried hosting it using Firebase Hosting. Surprisingly, only the domain [name].firebaseapp.com works but [name].web.app shows the "Site not found" default page:

site-not-found image

I am using a basic firebase config (the default one you get using firebase init):

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

I get the "Site not found" when I go on [name].web.app. I would have suspected something was wrong with the index.html, the rewrites, the build folder, etc... but then why would I see the page functional on [name].firebaseapp.com and hosted nicely and it should be?

There is a few things I suspect:

• The domain name is not available from firebase itself (although why would firebase name the domain something that is invalid if that was the case when creating the project)
• The files are being pushed to the [name].firebaseapp.com domain only (in that case, how can you control that?)

Answer 1

Update:

I emailed customer support at firebase, and the next day the domain was working normally. No explanation was provided on why the issue occurred, but emailing them solved it.