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import { ApolloServer } from '@apollo/server'; import { startStandaloneServer } from '@apollo/server/standalone'; import DataLoader from 'dataloader'; const typeDefs = `#graphql type User { id: ID!, name: String!, posts: [Post!]! } type Post { id: ID!, title: String!, author: User! } type Query { users: [User!]!, post(id: ID!): Post } type Mutation { createPost(title: String!, authorId: ID!): Post! } type Subscription { postCreated: Post! } `; const resolvers = { Query: { users: () => db.users.findMany(), post: (_, { id }) => db.posts.findById(id), }, User: { posts: ({ id }, _, { loaders }) => loaders.postsByUser.load(id), }, }; const server = new ApolloServer({ typeDefs, resolvers });