import type { CellMatrix, Sheet } from '@fortune-sheet/core';
export interface SpreadsheetGridSize {
    rowCount: number;
    columnCount: number;
}
export declare function sparseArrayIndexes(values: readonly unknown[] | undefined): number[];
export declare function sparseArrayEntries<T>(values: readonly T[] | undefined): Array<[number, T]>;
export declare function sparseMatrixColumnCount(matrix: CellMatrix | undefined): number;
export declare function spreadsheetGridSize(sheet: Pick<Sheet, 'column' | 'data' | 'row'> | undefined): SpreadsheetGridSize | null;
export declare function cloneSparseMatrix(source: CellMatrix | undefined): CellMatrix;