import { IPage } from '../blocks';
import { IBlock, IBlockData } from '../typings';
import { ReactElement } from 'react';
interface CreateBlockOption<T extends IBlockData> extends Omit<IBlock<T>, 'transform'> {
}
export declare function createCustomBlock<T extends IBlockData>(block: CreateBlockOption<T> & {
    render: (data: T, idx: string | null, mode: 'testing' | 'production', context?: IPage, dataSource?: {
        [key: string]: any;
    }) => IBlockData | ReactElement | null;
}): IBlock<T>;
export {};