Zod — Animate | AI Wisdom

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🎞 ANIMATE · Mode 3 of 5 · +100 XP— Zod Schema Validation
📋Schema
⚙️Infer
🔄Parse
✅Transform
🎯 Next: Test →
Step 1 / 4
Speed
Define Schema
z.object() — compose validators declaratively💡 Analogy
Like building a LEGO structure — snap together validators to describe exactly what valid data looks like.
Zod schemas are built from composable validators. z.string().email() chains string validation with email format validation.
Console Output
> UserSchema defined
> z.string().min(2) — string with at least 2 chars
> z.enum([...]) — one of the exact listed values
●zod.ts
Define SchemaL3–10
1import { z } from 'zod';
2 
3// Define schema — single source of truth
4const UserSchema = z.object({
5  id:    z.string().uuid(),
6  name:  z.string().min(2).max(100),
7  email: z.string().email(),
8  age:   z.number().int().min(0).max(150).optional(),
9  role:  z.enum(['admin', 'user', 'guest']),
10});
11 
12// Infer TypeScript type from schema — no duplication!
13type User = z.infer<typeof UserSchema>;
14 
15// parse throws on invalid data
16const valid = UserSchema.parse({
17  id: 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
18  name: 'Alice', email: 'alice@example.com', role: 'admin'
19}); // → User object, or throws ZodError
20 
21// safeParse returns success/error discriminated union
22const result = UserSchema.safeParse({ name: 'A', email: 'not-email', role: 'nobody' });
23if (!result.success) {
24  result.error.issues.forEach(i => console.log(i.path, i.message));
25  // [['name'], 'String must contain at least 2 character(s)']
26  // [['email'], 'Invalid email']
27  // [['role'], 'Invalid enum value']
28}
29 
30// Transform — parse and reshape data
31const CreateUserSchema = UserSchema.omit({ id: true }).extend({
32  password: z.string().min(8),
33});
34type CreateUserDto = z.infer<typeof CreateUserSchema>;
34 lines
Timeline — 4 Steps
Define Schema
z.object() — compose validators declaratively💡 Analogy
Like building a LEGO structure — snap together validators to describe exactly what valid data looks like.
Zod schemas are built from composable validators. z.string().email() chains string validation with email format validation.
Console Output
> UserSchema defined
> z.string().min(2) — string with at least 2 chars
> z.enum([...]) — one of the exact listed values

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Discussion

z.object() — compose validators declaratively

💡 Analogy

Like building a LEGO structure — snap together validators to describe exactly what valid data looks like.

Zod schemas are built from composable validators. z.string().email() chains string validation with email format validation.

Console Output

> UserSchema defined
> z.string().min(2) — string with at least 2 chars
> z.enum([...]) — one of the exact listed values

z.object() — compose validators declaratively

💡 Analogy

Like building a LEGO structure — snap together validators to describe exactly what valid data looks like.

Zod schemas are built from composable validators. z.string().email() chains string validation with email format validation.

Console Output

> UserSchema defined
> z.string().min(2) — string with at least 2 chars
> z.enum([...]) — one of the exact listed values