import { BaseMasonryGrid, type FramePosition } from './BaseMasonryGrid.js';
export declare class BalancedMasonryGrid extends BaseMasonryGrid {
    protected bufferA: FramePosition[];
    protected bufferB: FramePosition[];
    /**
     * Balance row with previous.
     * Current implementation stacks row with previous to have minimal possible height.
     * @param positions - Virtual positions of the frames in the grid.
     * @param start - Start index of the row to balance.
     * @param end - End index of the row to balance.
     */
    protected balanceRow(positions: FramePosition[], start: number, end: number): void;
    protected reflow(isMutation?: boolean): void;
    destroy(): void;
}
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