import { ReactiveController, ReactiveControllerHost } from 'lit';
import { SbbOpenCloseBaseElement } from '../base-elements/open-close-base-element.ts';
/**
 * Handles the stack of overlays and closes the last opened one when pressing Escape.
 */
export declare class SbbEscapableOverlayController implements ReactiveController {
    private _host;
    private _overlayStack;
    constructor(_host: ReactiveControllerHost & SbbOpenCloseBaseElement, _overlayStack?: SbbOpenCloseBaseElement[]);
    hostDisconnected(): void;
    connect(): void;
    disconnect(): void;
}
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