zod-zz

One zod-extend package to rule them all, one zod-extend package to find them, One zod-extend package to package them all and in the darkness bind them.

A Zod extension package that provides additional schema types and methods for enhanced validation.

npm install zod zod-zz

import { z } from 'zod';
import { extendZod } from 'zod-zz';

const zz = extendZod(z);

zz.string();   // existing zod functions
zz.currency(); // extended set of zod functions

Available Extensions

Currency

Validates ISO 4217 currency codes:

import { z } from 'zod';
import { extendZod } from 'zod-zz';

const extendedZod = extendZod(z);
const currencySchema = extendedZod.currency();

// Valid currencies
currencySchema.parse('USD'); // ✅
currencySchema.parse('EUR'); // ✅
currencySchema.parse('GBP'); // ✅
currencySchema.parse('usd'); // ✅ (case-insensitive)

// Invalid currencies
currencySchema.parse('INVALID'); // ❌ Throws error
currencySchema.parse(''); // ❌ Throws error

API Reference

extendZod(zod: typeof z): typeof z

Extends a Zod instance with additional schema types and methods.

Parameters:

• zod: The Zod instance to extend

Returns:

• The extended Zod instance with additional methods

Development

# Install dependencies
npm install

# Build the package
npm run build

# Run tests
npm test

# Run tests in watch mode
npm run test:watch

License

MIT