react-admin extend dataprovider - graphql - hasura

Question

I need to extend the graphql/hasura dataprovider in order to have a custom method

all other methods shold work as normally expected from this dataprovider

i've this error dataProvider.getList is not a function in the fallback part (in the else part)

this is my code:

import React, {useState, useEffect} from 'react';
import {Admin, Resource, ListGuesser, EditGuesser} from 'react-admin';

import buildHasuraProvider from 'ra-data-hasura'
import authProvider from './authProvider';
import { ComunicazioniCreate, ComunicazioniEdit } from './comunicazioni'
import Dashboard from './Dashboard';

function App() {

  const [dataProvider, setDataProvider] = useState(null);

  useEffect(() => {
    const buildDataProvider = async () => {

      //se non dovevo passare l'autenticazione era sufficente questo
      const dataProvider = await buildHasuraProvider({
        clientOptions: { uri: 'http://localhost:8080/v1/graphql' }
      });

      const  extendeDataProvider = {
        ...dataProvider,
        getList: (resource, params) => {
           if (resource === 'apikeys') {
             console.log("implement this method");
           } else {
            // fallback to the default implementation  
            return dataProvider.getList(resource, params);
          }
        }
      }

      setDataProvider(() => extendeDataProvider);
    
    };
    
    buildDataProvider();
  }, []);

  if (!dataProvider) return <p>Loading...</p>;

  return (
    <Admin 
      dashboard={Dashboard}       //homepage
      dataProvider={dataProvider}     
    >
      <Resource name="comunicazioni" list={ListGuesser} edit={ComunicazioniEdit} create={ComunicazioniCreate} />
      
      
    </Admin>
  )
}

export default App;