Support for isFetching/fetching

[chimon2000]

React Query & Redux Toolkit Query both have the concept of a fetching flag such that

• You can be fetching and be in a success(data) or error state at the same time.
• You cannot be in loading and success states at the same time.

The reasoning is to allow for greater control when rendering the UI: displaying a skeleton for isLoading vs. old data when isFetching: https://redux-toolkit.js.org/rtk-query/usage/queries#query-loading-state

Is this behavior possible with FutureProvider and AsyncValue, and if not whether it's worth exploring?

[TimWhiting]

See isRefreshing, in riverpod 2.0.0-dev's changelog:
https://pub.dev/packages/riverpod/versions/2.0.0-dev.9/changelog#200-dev0

[rrousselGit]

2.0 does that

I'm making last minute changes on that behavior before releasing 2.0, but that new version is supposed to cover that.