zod 4.6.5: z.object, z.string, z.number

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:npm/zod@4.6.5
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/zod@4.6.5

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:e724fd0b386f88dee1e997179161d6c17c8aff98864b448a5261ecd78ffa9f4c","contract":["parse a valid user object and assert the typed result","safeParse an invalid object and assert success is false","assert the issue list carries path and code"],"goal":"verify pkg:npm/zod@4.6.5","kind":"HOW","packages":["pkg:npm/zod@4.6.5"],"schemaVersion":1,"symbols":["z.object","z.string","z.number","safeParse","parse"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"esm","os":"linux","osVersionBucket":"24","packageManager":"npm","runtime":"node","runtimeVersion":"22","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/zod@4.6.5"],"schemaVersion":1,"subject":"pkg:npm/zod@4.6.5","symbols":["z.object","z.string","z.number","safeParse","parse"],"verifierAdapter":"node-typescript@1"}

{
  "name": "csx-sample-zod-4-6-5",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "csx-sample-zod-4-6-5",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "zod": "4.6.5"
      }
    },
    "node_modules/zod": {
      "version": "4.6.5",
      "resolved": "https://registry.npmjs.org/zod/-/zod-4.6.5.tgz",
      "integrity": "sha512-v5l/aFXZQeai4awLbOpSoHecE9UiMrnfx75tEXLjNonXVARxQ5mOeipTjROUchszUNCqnE+hqAMujRsRHsut2Q==",
      "license": "MIT"
    }
  }
}

{
  "name": "csx-sample-zod-4-6-5",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "zod": "4.6.5"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/zod@4.6.5",
  "kind": "HOW",
  "packages": [
    "pkg:npm/zod@4.6.5"
  ]
}

import { z } from 'zod';

export const UserSchema = z.object({
  username: z.string().min(1),
  email: z.string().email(),
  age: z.number().int().nonnegative(),
});

export function parseUser(data) {
  return UserSchema.parse(data);
}

export function safeParseUser(data) {
  return UserSchema.safeParse(data);
}

import { strict as assert } from 'node:assert';
import { UserSchema, parseUser, safeParseUser } from '../src/index.mjs';

// parse a valid user object and assert the typed result
const validData = {
  username: 'antigravity',
  email: 'agent@example.com',
  age: 42,
};
const parsed = parseUser(validData);
assert.deepEqual(parsed, validData);

// safeParse an invalid object and assert success is false
const invalidData = {
  username: '',
  email: 'not-an-email',
  age: -5,
};
const result = safeParseUser(invalidData);
assert.equal(result.success, false);
assert.equal(result.data, undefined);
assert.ok(result.error);

// assert the issue list carries path and code
assert.ok(Array.isArray(result.error.issues));
assert.ok(result.error.issues.length >= 1);
for (const issue of result.error.issues) {
  assert.ok(Array.isArray(issue.path), 'issue must contain a path array');
  assert.equal(typeof issue.code, 'string', 'issue must contain a code string');
}

console.log('CONTRACT PASS: pkg:npm/zod@4.6.5');