Suppose there's a table of data containing user list. The data of user(here in userArr) is stored in state in array format.
Now I create a user, API gets executed, response gets returned and now there is a new user. So when user gets created, we need to add him(append him to users array userArr).
So everytime, a new uer gets created, we need to make sure that he gets added in to table hence appending him into userArr.
Now utility helps as part of validation, that always when there is create user action dispatched, pass a state's property(i.e. userArr) and criteria to validate if user was added into state's property. If validation fails, then it will throw warning just like when proptypes test fails.
Same use-case extends for Update and delete operation.
resetState(suppliedState, stateKeyToCompare): This ensures given state property (key) should be reset. Either to empty string,empty arr,empty obj or null.statePropertyChangeLogger(): This will do diff comparision with previous state and will log out which state keys(properties) have been changed.getStateHistory(): It can contain of state history array upto previous 10 state snapshots.
- Check use case : When a user CRUDS a data from list, state/local state should be updated as list should be updated.
- Check use case : If current logged in user's details has been updated, then it should reflect everywhere
- When user fills out form, form state should be reset as values should be " " or null (empty [] or {} in some cases).
- It can be used as wrapper or like react component.