GraphQL, resolved
in plain Go.

type User struct {
    ID   string  `gql:"id,nonNull"`
    Name string  `gql:"name,nonNull"`
    Bio  *string `gql:"bio"`
}
type UserArgs struct {
    ID string `gql:"id,nonNull"`
}
type Query struct{}
func (Query) User(ctx context.Context, args UserArgs) (*User, error)
type Subscription struct{}
func (Subscription) UserUpdated(ctx context.Context) (<-chan *User, error)

type User {
  id: String!
  name: String!
  bio: String
}
type Query {
  user(id: String!): User
}
type Subscription {
  userUpdated: User
}