import { Observable } from "rxjs";
import { OnDestroy, PipeTransform } from "@angular/core";
import * as i0 from "@angular/core";
/**
 * Observe both Observable and Signal values
 */
export declare class ObservePipe<T> implements PipeTransform, OnDestroy {
    private cdr;
    private asyncPipe;
    constructor();
    transform(value: T | Observable<T> | undefined | null): T | null;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ObservePipe<any>, never>;
    static ɵpipe: i0.ɵɵPipeDeclaration<ObservePipe<any>, "observe", true>;
}