export type CellPos = {
    row: number;
    col: number;
};
type CellRect = {
    start_row: number;
    start_col: number;
    end_row: number;
    end_col: number;
};
export declare class CellSelection {
    rects: CellRect[];
    dragging: boolean;
    drag_moved: boolean;
    keys: Set<string>;
    size: number;
    has: (row: number, col: number) => boolean;
    clear: () => void;
    start_drag(pos: CellPos, additive: boolean): void;
    extend_drag(pos: CellPos): boolean;
    end_drag(): boolean;
    step(from: CellPos, to: CellPos, extend: boolean): void;
    to_tsv(n_rows: number, n_cols: number, cell_text: (row: number, col: number) => string): string;
}
export {};