ModalReducer.js

import * as types from '../actions/types';

const INITIAL_STATE = {
  modalOpen: false,
};

export default (state = INITIAL_STATE, { type }) => {
  switch (type) {
    case types.MODAL_OPEN:
      return { modalOpen: true };
    case types.MODAL_CLOSE:
      return INITIAL_STATE;
    default: return state;
  }
};