import { OnDestroy, TemplateRef, ViewContainerRef } from '@angular/core';
export declare class DevModeService {
    constructor();
    isDevMode(): boolean;
}
export declare class IsDevModeDirective implements OnDestroy {
    private viewRef;
    constructor(devModeService: DevModeService, viewContainerRef: ViewContainerRef, templateRef: TemplateRef<null>);
    ngOnDestroy(): void;
}