declare class Sandbox {
    sandbox: HTMLIFrameElement;
    contentDocument: Document;
    contentWindow: Window;
    constructor(src?: string, setting?: string);
    set src(src: string);
    set unload(beforeunload: (this: WindowEventHandlers, ev: BeforeUnloadEvent) => any);
    set onload(onload: (this: GlobalEventHandlers, ev: Event) => any);
    set onerror(onerror: OnErrorEventHandler);
    set(allow: string): void;
    reset(allow: string): this;
    open(): this;
    write(context?: string): this;
    close(): this;
    append(context: string | undefined, container: HTMLElement): void;
    enter(container: HTMLElement): void;
    attach(): void;
    exit(): void;
}
export { Sandbox };