Is it a good practice to update the state dynamically based on the payload?

[firaskrichi]

Is it a good practice to update the state dynamically based on the payload.

Something like this : {...state, ...action.payload.data}

Where if payload = {userName : "John"} only the userName will be changed in the store without having to specify it explicitly.

[timdorr]

Sure, you can do that. Your state shape and reducers can be whatever you want them to be, so long as they are pure functions.