export declare class Collapse {
    private payloadElement;
    private isExpand?;
    private buttons;
    private contents;
    constructor(payloadElement: HTMLElement, config?: {
        expand?: boolean;
    });
    render(): HTMLElement;
    init(): void;
    private handleClick;
    private toggleExpand;
    private toggleButton;
    removeElement(collapseId: string, type: string): void;
    setElement(newElement: HTMLElement): void;
    setExpand(expand: boolean): void;
    destroy(): void;
}