import * as React from 'react';
export declare const usePanel: (inProps?: unknown) => import("@primereact/types/core").HeadlessInstance<import("@primereact/types/shared/panel").usePanelProps, unknown, {
    state: {
        collapsed: boolean | undefined;
    };
    contentRef: React.RefObject<null>;
    toggle: (event: React.SyntheticEvent) => void;
    expand: (event: React.SyntheticEvent) => void;
    collapse: (event: React.SyntheticEvent) => void;
    onButtonClick: (event: React.SyntheticEvent) => void;
}>;