signup: async(_, args, context, info) => {
  const password = await bcrypt.hash(args.password, 10);
  const user = await context.prisma.mutation.createUser({
    data: {
      email: args.email.toLowerCase(),
      password: password,
      nickname: args.nickname.toLowerCase(),
      name: args.name,
    },
  });

  return {
    token: jwt.sign({ userId: user.id }, process.env.APP_SECRET),
    user,
  };
},