Thanks for your replies. I already use the login_hint option to pre-fill the email. The extra click is what is undesirable. It should in theory be possible to, with only two clicks, no typing, and never seeing the Universal Login page get into the application. One click to initiate passwordless (without leaving the initial page, followed by a toast explaining they should check their email), and a second click in the email they receive.
One day I’ll get around to trying the passwordless initialization with auth0-spa-js handleAuthentication.
It would be nice to have a Utility Auth0 library to make more direct decisions about the authentication flow that could be used along side the other “simple” libraries.
Thanks again