import type { PositionGridCell, PositionUnion } from "../../types";
import type { DataRect } from "../types";
/**
 * Expands the last selection rect upward by one row step from the focused cell
 * position. When `meta` is true the rect jumps directly to the first row.
 * Span roots are respected so the rect always aligns to full cell extents.
 * Returns the updated selections array, or null if no expansion is possible.
 */
export declare function expandRectsUp(scrollIntoView: (params: {
    row?: number;
    column?: number;
}) => void, cellRoot: (row: number, column: number) => PositionUnion | null, selections: DataRect[], meta: boolean, position: PositionGridCell, rowCount: number): DataRect[] | null;