如何在redux工具包中从prepareHeaders访问url

import { createSlice, configureStore, getDefaultMiddleware } from '@reduxjs/toolkit';
import { prepareHeaders } from '@reduxjs/toolkit/query';

const mySlice = createSlice({
  name: 'mySlice',
  initialState: {},
  reducers: {
    // 定义reducer函数
  },
});

const baseQuery = fetchBaseQuery({
  baseUrl: 'https://api.example.com',
  prepareHeaders: (headers, { getState }) => {
    const url = getState().mySlice.url; // 通过getState()方法获取redux状态中的url
    headers.set('Authorization', `Bearer ${getToken()}`);
    headers.set('Content-Type', 'application/json');
    headers.set('Referer', url); // 使用url进行自定义操作
  },
});

const api = createApi({
  reducerPath: 'api',
  baseQuery,
  endpoints: (builder) => ({
    // 定义API的endpoint
  }),
});

const store = configureStore({
  reducer: {
    [api.reducerPath]: api.reducer,
    mySlice: mySlice.reducer,
  },
  middleware: (getDefaultMiddleware) =>
    getDefaultMiddleware().concat(api.middleware),
});