Configure Authorization code grant with the Proof Key of Code Exchange on a Regular Web App?

Hi All,

We’re currently in the process of rewriting our existing MVC application (configured to be a Regular Web App) into a new SPA application and for a period of time are planning to run both simultaneously in the same tenant.

Is there a way to configure it to work with a single auth0 application? For example, configure the application to support both the ‘traditional’ Authorization code grant type as well as the Authorization code grant with the Proof Key of Code Exchange (PKCE)?

If not, what are the alternative solutions?

Many thanks.