yapi/client/reducer/modules/menu.js

// Actions
const CHANGE_MENU_ITEM = 'yapi/menu/CHANGE_MENU_ITEM';

// Reducer
const initialState = {
  curKey: '/'+window.location.hash.split("/")[1]
}

export default (state = initialState, action) => {
  switch (action.type) {
    case CHANGE_MENU_ITEM: {
      return {
        ...state,
        curKey: action.data
      };
    }
    default:
      return state;
  }
}

// Action Creators
export function changeMenuItem(curKey) {
  return {
    type: CHANGE_MENU_ITEM,
    data: curKey
  }
}