export const Message = new GraphQLObjectType({
  name: 'Message',
  fields: () => ({
    id: { type: GraphQLNonNull(ObjectId) },
    text: { type: GraphQLString },
    createdAt: { type: GraphQLString },
    user: { 
      type: User,
      resolve: async (message, args, { loaders }) => {
        return await loaders.user.load(message.userId);
      },
    },
  })
});