import React from 'react';
export declare type Block = {
    altText?: string;
    src: string;
    isSelected: boolean;
};
declare type BlockColumnLayoutProps = {
    blocks: Block[];
    numColumns: number;
    columnWidth: number;
    onBlockClick: (src: string) => void;
};
declare const BlockColumnLayout: React.FC<BlockColumnLayoutProps>;
export default BlockColumnLayout;