Firebase `getDownloadURL`

const storage = firebase.storage();
const pathReference = storage.ref('audio/interview.wav');
// TODO: add error handling
const url = await pathReference.getDownloadURL();

from Download Files on Web​

When do the getDownloadURL expire?

Firebase Storage tokens do not expire.

They may be revoked from the Firebase Console, which would invalidate URLs based on them.

from Firebase Storage getDownloadUrl's token validity​