mutation.js

function post(parent, args, context, info) {
  const userId = getUserId(context)
  const newLink = await context.prisma.link.create({
    data: {
      url: args.url,
      description: args.description,
      postedBy: { connect: { id: userId } },
    }
  })
  context.pubsub.publish("NEW_LINK", newLink)
  return newLink
}