tg-graphql.js

const { graphql, buildSchema } = require("graphql")

let schema = buildSchema(`
type Query {
    hello: Book
}

type Book {
    id: ID!
    name: String!
}
`)

let resolver = {
    //Query: {
        hello: () => {
            return {id: "1", name: "book1"}
        },
        Book : () => {
            name: () => "bookxxxxx"
        }
    //}
}

graphql(schema, '{hello {id, name}}', resolver).then(res => console.log(res))