reverse-proxy-frontend/src/features/system/reducer.js

import * as types from "./actionTypes";
import initialState from "../../redux/reducers/initialState";

export default function systemReducer(state = initialState.system, action) {
  switch (action.type) {
    case types.LOAD_SYSTEM_DATETIME_SUCCESS:
      return {
        ...state,
        datetime: action.payload
      };

    case types.LOAD_SYSTEM_VERSION_SUCCESS:
      return {
        ...state,
        ...action.payload
      };
    default:
      return state;
  }
}