import { Observable } from 'rxjs';
import { OverlayConfig } from '@angular/cdk/overlay';
export declare class LayerConfig<TData = any> extends OverlayConfig {
    constructor(config: LayerConfig);
    data?: TData;
    closeOnBackdropClick?: boolean;
    closeOnEscape?: boolean;
}
export interface Layer {
    readonly afterClose: Observable<any>;
    readonly isVisible: boolean;
    readonly data: any;
    toggle(): void;
    open(config?: LayerConfig): void;
    close(result?: any): void;
    destroy(): void;
}