schema.graphql

type User {
    id: ID!,
    name: String!,
    description: String,
    email: String!,
    age: Int,
    followers: [User]
}

type Tweet {
    id: ID!
    text: String!,
    userId: String!
}

type Query {
    users: [User],
    user(id: ID!): User,
    tweets(userId: ID!, last: Int): [Tweet]
    followers: [User]
}