(Blog) Build a Redux hooked app

foodReducer-redux.js

function foodReducer(state = initialState, action) {
  switch (action.type) {
    case ACTIONS.CHANGE_DIET: {
      const { diet } = state;
      const newDiet = diet === 'veg' ? 'all' : 'veg';

      return {
        ...state,
        diet: newDiet,
        cartByIds: {},
      };
    }
    // other cases
  }
}