updatedog.js

const resolvers = {
  Query: {
    dogName: () => `Tommy the chihuahua`,
    dogs: (root, args, context, queryInfo) => {
      return context.db.query.dogs({}, queryInfo);
    }
  },
  Mutation: {
    dog: (root, args, context, queryInfo) => {
      return context.db.mutation.createDog(
        {
          data: {
            type: args.type,
            name: args.name
          }
        },
        queryInfo
      );
    },
    updateDog: (root, args, context, queryInfo) => {
      return context.db.mutation.updateDog(
        {
          data: {
            type: args.type,
            name: args.name
          },
          where: {
            id: args.id
          }
        },
        queryInfo
      );
    }
  }
};