“用户”类型的字段“我”必须有一个选择的子字段

你好，我正在尝试学习 GraphQL语言。我有以下代码片段。

// Welcome to Launchpad!
// Log in to edit and save pads, run queries in GraphiQL on the right.
// Click "Download" above to get a zip with a standalone Node.js server.
// See docs and examples at https://github.com/apollographql/awesome-launchpad


// graphql-tools combines a schema string with resolvers.
import { makeExecutableSchema } from 'graphql-tools';


// Construct a schema, using GraphQL schema language
const typeDefs = `
type User {
name: String!
age: Int!
}


type Query {
me: User
}
`;


const user = { name: 'Williams', age: 26};


// Provide resolver functions for your schema fields
const resolvers = {
Query: {
me: (root, args, context) => {
return user;
},
},
};


// Required: Export the GraphQL.js schema object as "schema"
export const schema = makeExecutableSchema({
typeDefs,
resolvers,
});


// Optional: Export a function to get context from the request. It accepts two
// parameters - headers (lowercased http headers) and secrets (secrets defined
// in secrets section). It must return an object (or a promise resolving to it).
export function context(headers, secrets) {
return {
headers,
secrets,
};
};


// Optional: Export a root value to be passed during execution
// export const rootValue = {};


// Optional: Export a root function, that returns root to be passed
// during execution, accepting headers and secrets. It can return a
// promise. rootFunction takes precedence over rootValue.
// export function rootFunction(headers, secrets) {
//   return {
//     headers,
//     secrets,
//   };
// };

要求:

{
me
}

回应:

{
"errors": [
{
"message": "Field \"me\" of type \"User\" must have a selection of subfields. Did you mean \"me { ... }\"?",
"locations": [
{
"line": 4,
"column": 3
}
]
}
]
}

有人知道我做错了什么吗? 怎么弥补？