What is Form Validation?

Form validation in Frontend Accelerator combines React Hook Form for performant form state management with Zod for type-safe schema validation. This powerful combination provides instant validation feedback, type safety, and excellent developer experience.

Complete Form Example:

import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import * as z from 'zod';

const formSchema = z.object({
  email: z.string().email('Invalid email'),
  password: z.string().min(8, 'Too short'),
  age: z.number().min(18, 'Must be 18+')
});

type FormData = z.infer<typeof formSchema>;

export function SignupForm() {
  const { register, handleSubmit, formState: { errors } } = useForm<FormData>({
    resolver: zodResolver(formSchema)
  });

  const onSubmit = async (data: FormData) => {
    // Data is fully typed and validated
    await createUser(data);
  };

  return (
    <form onSubmit={handleSubmit(onSubmit)}>
      <input {...register('email')} />
      {errors.email && <span>{errors.email.message}</span>}
    </form>
  );
}

Key Benefits:

• Type Safety: Zod schemas provide TypeScript types automatically
• Instant Feedback: Real-time validation as users type
• Reusable Schemas: Share validation between client and server
• Better UX: Clear error messages guide users

AI-Friendly: Zod schemas are declarative and explicit. AI tools understand validation rules, can generate schemas from requirements, suggest appropriate validators, and ensure consistent validation across your application.