export type DataListSpacerProps = {
    /** Pixel height of the spacer. Pass 0 to render nothing. */
    height: number;
};
/**
 * Pads top/bottom of the visible window when virtualizing — preserves the
 * grid's total scroll height for the rows that aren't currently rendered.
 * Spans the full grid width so it doesn't disturb column layout.
 */
export declare function DataListSpacer({ height }: DataListSpacerProps): import("react/jsx-runtime").JSX.Element | null;
