timestamps to be spread in any GraphQL Object Type

_usage.tsx

const UserType = new GraphQLObjectType<IUser, GraphQLContext>({
  name: 'User',
  description: 'User data',
  fields: () => ({
    id: globalIdField('User'),
    ...mongooseIDResolver,
    name: {
      type: GraphQLString,
      resolve: user => user.name,
    },
    email: {
      type: GraphQLString,
      resolve: user => user.email,
    },
    ...timestamps,
  }),
  interfaces: () => [nodeInterface],
});

timestamps.ts

import { GraphQLString } from 'graphql';

export const timestamps = {
  createdAt: {
    type: GraphQLString,
    resolve: obj => obj.createdAt ? obj.createdAt.toISOString() : null,
  },
  updatedAt: {
    type: GraphQLString,
    resolve: obj => obj.updatedAt ? obj.updatedAt.toISOString() : null,
  },
};