next.js/examples/api-routes-apollo-server-and-client/pages/api/graphql.ts

import { ApolloServer } from "@apollo/server";
import { startServerAndCreateNextHandler } from "@as-integrations/next";
import { schema } from "../../apollo/schema";

const apolloServer = new ApolloServer({ schema });

export default startServerAndCreateNextHandler(apolloServer);