We are building a web application that frequently uploads data to cloud storage of a user. This application does not have a backend and thus we have to use the "Browser oAuth Flow" aka the "Implicit Flow" to connect to user storage. Bearer tokens obtained in this way expire hourly so we'd have to ask the user again and again for authorization.

Here is my feature request:
Implement an immediate mode similar to the one implemented by google or dropbox. This would allow us to "refresh" the bearer token if the user has an authorized session with the respective storage provider.
Actually this behavior is the default with the aforementioned providers. Dropbox has a parameter called force_reapprove, gdrive uses a parameter called prompt.

Best regards
Stefan