import { ViewContainerRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare class OverlayDirective {
    viewContainerRef: ViewContainerRef;
    constructor(viewContainerRef: ViewContainerRef);
    static ɵfac: i0.ɵɵFactoryDeclaration<OverlayDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<OverlayDirective, "[sdkOverlay]", never, {}, {}, never, never, false>;
}