Why not middleware?

[piotr-cz]

What it the benefit of implementing such functionality at the Redux-Persist level vs as Redux middleware (ie. like with redux-state-sync)?

Only one I can think of is that as it's dependent on Redux-Persist, so all app instances are starting with latest state.

When similar functionality is implemented as middleware, only single actions are synced. Using this module whole state is being retrieved and hydrated.

[behnammodi]

Of course, redux-persist-crosstab is not a middleware only. initStateWithPrevTab and withReduxStateSync is Redux level method