grafana/public/app/features/alerting/unified/api/alertingApi.ts

import { BaseQueryFn, createApi } from '@reduxjs/toolkit/query/react';
import { lastValueFrom } from 'rxjs';

import { BackendSrvRequest, getBackendSrv } from '@grafana/runtime';

const backendSrvBaseQuery = (): BaseQueryFn<BackendSrvRequest> => async (requestOptions) => {
  try {
    const { data, ...meta } = await lastValueFrom(getBackendSrv().fetch(requestOptions));

    return { data, meta };
  } catch (error) {
    return { error };
  }
};

export const alertingApi = createApi({
  reducerPath: 'alertingApi',
  baseQuery: backendSrvBaseQuery(),
  endpoints: () => ({}),
});