onSpreadValue

onSpreadValue - Effect

This effect allows us to read the entries of an object from the action and spread them into the state.

Example:

const initialState = {
  key1: 10,
  key2: 20,
  key3: 30
};

const reducerDescription = {
  [actions.SPREAD]: onSpreadValue()
};

export default createReducer(initialState, reducerDescription);

If we now do: dispatch({ type: actions.SPREAD, payload: { key1: 'Hello', key2: 45 } });

Then the state will be:

state = {
  key1: 'Hello',
  key2: 45,
  key3: 20
};

Custom selectors

onSpreadValue receives an optional parameter:

• selector: This function describes how we read the object we want to spread from the action. (action, state) => Object By default, is: action => action.payload