Apollo GraphQL vs Zod

import { ApolloServer } from '@apollo/server';
import { startStandaloneServer } from '@apollo/server/standalone';

const typeDefs = `
  type Query {
    hello: String
    user(id: ID!): User
  }
  type User {
    id: ID!
    name: String!
    email: String!
  }
`;

const resolvers = {
  Query: {
    hello: () => 'Hello from Apollo!',
    user: async (_, { id }) => getUserById(id),
  },
};

const server = new ApolloServer({ typeDefs, resolvers });
const { url } = await startStandaloneServer(server, { listen: { port: 4000 } });
console.log(`Server ready at: ${url}`);

import { z } from 'zod';

const UserSchema = z.object({
  name: z.string().min(1).max(100),
  email: z.string().email(),
  age: z.number().int().min(0).max(150).optional(),
  role: z.enum(['admin', 'user', 'guest']).default('user'),
});

type User = z.infer<typeof UserSchema>;

// Parse & validate (throws on failure)
const user = UserSchema.parse(rawInput);

// Safe parse (returns success/error union)
const result = UserSchema.safeParse(rawInput);
if (!result.success) console.error(result.error.issues);