type AppearanceSlice<Props, Keys extends keyof Props> = Partial<Pick<Props, Keys>>;
type AppearanceRecord<AppearanceKey extends PropertyKey, Props, Keys extends keyof Props> = Record<AppearanceKey, AppearanceSlice<Props, Keys>>;
type AppearancePartialRecord<AppearanceKey extends PropertyKey, Props, Keys extends keyof Props> = Partial<Record<AppearanceKey, AppearanceSlice<Props, Keys>>>;
/** Allows `condition && value` — React omits `false` / `null` props. */
type ConditionalProp<T> = false | T | null;
export type { AppearancePartialRecord, AppearanceRecord, AppearanceSlice, ConditionalProp, };