Apollo Subgraph

This package provides utilities for creating GraphQL microservices, which can be combined into a single endpoint through tools like Apollo Gateway.

For complete documentation, see the Apollo Subgraph API reference.

Usage

``js
import { ApolloServer } from '@apollo/server';
import { startStandaloneServer } from '@apollo/server/standalone';
import { gql } from 'graphql-tag';
import { buildSubgraphSchema } from '@apollo/subgraph';

const typeDefs = gql
type Query {
me: User
}

type User @key(fields: "id") {
id: ID!
username: String
}
;

const resolvers = {
Query: {
me() {
return { id: "1", username: "@ava" }
}
},
User: {
__resolveReference(user, { fetchUserById }){
return fetchUserById(user.id)
}
}
};

const server = new ApolloServer({
schema: buildSubgraphSchema([{ typeDefs, resolvers }])
});

// Note the top-level await!
const { url } = await startStandaloneServer(server);
console.log(🚀 Server ready at ${url});
``