Avoiding Type Casting with Brand.nominal

const LineStyleBrand = Brand.nominal<LineStyleData>();

/**
 * Create a LineStyleData from internal structure.
 *
 * NOTE: The cast `as LineStyleData<K>` is required because Brand.nominal
 * cannot preserve generic type parameters. This is acceptable because:
 * 1. The schema validates the structure at runtime
 * 2. The generic K is a compile-time refinement only
 * 3. The cast is at the brand boundary, not bypassing validation
 */
export function make<K extends LineStyleKeyword>(data: _LineStyleInternal<K>): LineStyleData<K> {
  return LineStyleBrand(data) as LineStyleData<K>;
}