server.js

import { ApolloServer, gql } from 'apollo-server';
import { MvrpAPI } from './datasource';

...

...

const server = new ApolloServer({
  typeDefs,
  resolvers,
  dataSources: () => ({
    mvrpAPI: new MvrpAPI()
  })
});

server.listen().then(({ url }) => {
  console.log(`🚀 Server ready at ${url}`)
});