apollo-federation-node-18
v0.27.0
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Apollo Federation Utilities
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Apollo Federation Utilities
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 Federation API reference.
Usage
const { ApolloServer, gql } = require("apollo-server");
const { buildFederatedSchema } = require("@apollo/federation");
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: buildFederatedSchema([{ typeDefs, resolvers }])
});