import { ReactNode } from '../../node_modules/react'; export declare function isEmptySelectValue(value: unknown): boolean; export declare function findMenuItemLabel(children: ReactNode, value: unknown): ReactNode; export type SelectSlotConfig = { displayEmpty?: boolean; renderValue?: (value: unknown) => ReactNode; }; export declare function mergeSelectPlaceholderSlotProps(resolvedPlaceholder: string | undefined, children: ReactNode | undefined, renderEmptyValue: (placeholder: string) => ReactNode, slotProps?: { select?: SelectSlotConfig; }, legacySelectProps?: SelectSlotConfig): { select?: SelectSlotConfig; } | undefined;