Generate Production-Ready GraphQL Resolvers

As a backend developer, I want to efficiently create robust GraphQL resolvers so that I can deliver performant and maintainable APIs. The big job is building scalable backend services. The small job is generating the boilerplate code for GraphQL resolvers, including proper structure, context management, and error handling.

interface Context {
  dataSources: {
    userAPI: UserAPI;
    postAPI: PostAPI;
  };
  user?: User;
}

const resolvers = {
  Query: {
    user: async (
      _: any,
      { id }: { id: string },
      { dataSources }: Context
    ): Promise<User | null> => {
      try {
        return await dataSources.userAPI.findById(id);
      } catch (error) {
        throw new UserInputError(`User with ID ${id} not found`);
      }
    },

    users: async (
      _: any,
      { filter, pagination }: { filter?: UserFilter; pagination?: PaginationInput },
      { dataSources }: Context
    ): Promise<UserConnection> => {
      return await dataSources.userAPI.findMany({
        filter,
        ...pagination,
      });
    },
  },
};