import React from 'react';
import SignaturePad from './utils/signature_pad';
export interface DrawingBoardProps {
    prefixCls: string;
    isEmpty: boolean;
    setDataUrl: (dataUrl: string) => void;
    setIsEmpty: (value: boolean) => void;
    signaturePad: () => SignaturePad | null | undefined;
    undo?: () => void;
    redo?: () => void;
    onClear?: () => void;
}
export interface SignatureHistoryItem {
    data: string;
}
declare const DrawingBoard: React.ForwardRefExoticComponent<DrawingBoardProps & React.RefAttributes<unknown>>;
export default DrawingBoard;