Active CSS class prefix.
Space-separated IDs that should be applied to aria-describedby.
Stable error element ID generated by the runtime.
Current field errors, if any.
Event registry that custom renderers must use for automatic cleanup.
Normalized field definition for the field being rendered.
Stable help text element ID generated by the runtime.
Stable input ID generated by the runtime.
Schema for the owning form.
Current immutable form state snapshot.
Current field value.
Context passed to custom field renderers.