countryRedux.js

const ADD_COUNTRY_NUM = 'ADD_COUNTRY_NUM';
const DEL_COUNTRY_NUM = 'DEL_COUNTRY_NUM';

export const addCountryNum = (payload) => ({
  type: 'ADD_COUNTRY_NUM',
  payload
});

export const delCountryNum = () => ({
  type: 'DEL_COUNTRY_NUM'
});

export default (state = {num: 86, code: null}, action) => {
  const { type, payload } = action;
  switch (type) {
    case ADD_COUNTRY_NUM:
      return {
        ...state,
        ...payload
      };
    case DEL_COUNTRY_NUM:
      return {
        ...state,
        num: '',
        code: '',
        from: ''
      };
    default:
      return state;
  }
}