Support returnTo in withMiddlewareAuthRequiredFactory

[cdaringe]

Checklist

• I have looked into the Readme, Examples, and FAQ and have not found a suitable solution or answer.
• I have looked into the API documentation and have not found a suitable solution or answer.
• I have searched the issues and have not found a suitable solution or answer.
• I have searched the Auth0 Community forums and have not found a suitable solution or answer.
• I agree to the terms within the Auth0 Code of Conduct.

Describe the problem you'd like to have solved

On successful auth using withMiddlewareAuthRequiredFactory, I want to returnTo my own specified URL, but cannot because withMiddlewareAuthRequiredFactory hard-codes a value.

Describe the ideal solution

Support an input into the middleware constructor OR (better) the middleware fn itself to accept a returnTo param, as with similar APIs in this SDK.

Alternatives and current workarounds

I have to redirect or nav my user from within my application, which is undesirable because it adds a highly undesirable entry into my user's navigation history/stack.

Additional context

This is for the next@beta, at the time of writing!

[adamjmcgrath]

Thanks for raising this @cdaringe

Yep, since we support a returnTo in withPageAuthRequired, I don't see why we can't support the option here. I'm not sure when we might be able to get round it, bit will leave this open as an enhancement.