User Registration Form Validator

Build a user registration form validation system for a Vue.js application. The form should validate user input in real-time and provide clear feedback about validation status.

Requirements

Create a Vue component that validates a user registration form with the following fields:

1. Username: Must be provided and contain only alphanumeric characters
2. Email: Must be provided and be a valid email format
3. Password: Must be provided and be at least 8 characters long
4. Confirm Password: Must be provided and match the password field

The component should:

• Track validation state for each field
• Show whether each field is valid or invalid
• Only show errors for fields that have been touched/interacted with
• Provide a method to validate the entire form manually
• Expose the overall form validity status

Test Cases

• The username field is invalid when empty @test
• The username field is invalid when it contains non-alphanumeric characters @test
• The email field is invalid when empty @test
• The email field is invalid when it doesn't match email format @test
• The password field is invalid when it has fewer than 8 characters @test
• The confirm password field is invalid when it doesn't match the password @test
• Fields marked as dirty show their error state correctly @test
• The form can be validated manually @test

Implementation

@generates

API

/**
 * Returns a reactive validation object for the registration form.
 *
 * @param {Object} formData - The reactive form data object with username, email, password, and confirmPassword fields
 * @returns {Object} Validation object with validation state and methods
 */
function useRegistrationValidation(formData) {
  // Returns validation object with:
  // - Field-level validation states (username, email, password, confirmPassword)
  // - Each field has: $invalid, $dirty, $error properties
  // - Methods: $touch(), $validate()
  // - Overall form state: $invalid
}

export { useRegistrationValidation };

Dependencies { .dependencies }

@vuelidate/core { .dependency }

Provides validation setup and state management functionality.

@vuelidate/validators { .dependency }

Provides built-in validators for common validation patterns.