Integrating with Node.js middleware

Apollo Server integrates easily with several popular Node.js middleware libraries. To integrate, first install the appropriate package from the table below instead of the core apollo-server package:

If you've already installed the core apollo-server package, you can npm uninstall it after installing an integration package.

Applying middleware

When integrating with middleware, first you initialize Apollo Server just like you always do, and then you call applyMiddleware, like so:

const { ApolloServer, gql } = require('apollo-server-express');
const { typeDefs, resolvers } = require('./schema');

const server = new ApolloServer({
  typeDefs,
  resolvers,
});

server.applyMiddleware({ app });

app.listen({ port: 4000 }, () =>
  console.log(`🚀 Server ready at http://localhost:4000${server.graphqlPath}`)
)

In the above example, the app parameter you provide to applyMiddleware is your middleware's top-level representation of your application. In Express applications, for example, this variable is commonly named app.

Note: When integrating with hapi, call applyMiddleware with await.