/// <reference types="react" />
export declare const ExtendButton: import("react").ForwardRefExoticComponent<{
    className?: string | undefined;
    onClick: (e: import("react").MouseEvent<Element, MouseEvent>) => void;
    onMouseDown: (e: import("react").MouseEvent<Element, MouseEvent>) => void;
    children: import("react").ReactNode;
} & import("react").RefAttributes<HTMLButtonElement>>;