ConstDefault name for the root data object
// Custom field mappings
const customFields = {
'user.email': 'Email Address',
'user.firstName': 'First Name',
'user.lastName': 'Last Name',
'billing.address': 'Billing Address'
}
// Field paths use dot notation for nested objects
'user.profile.bio' → 'Biography'
'settings.notifications.email' → 'Email Notifications'
Default field name mappings for error message formatting. Maps field paths to human-readable labels that appear in error messages.
The empty string key ('') provides a fallback name for the root data object.