import type { Observable } from "@knyt/artisan";
import type { ReactiveControllerHost } from "./ReactiveController.ts";
/**
 * @internal scope: workspace
 */
export type TrackingCurriedFn = <T extends Observable<any>>(observable: T) => T;
/**
 * Subscribes a host to an observable, requesting a host update on new values, keeps a strong reference
 * to the observable.
 */
export declare function track<T extends Observable<any>>(host: ReactiveControllerHost, observable: T): T;
export declare function track(host: ReactiveControllerHost): TrackingCurriedFn;
/**
 * Unsubscribes a host from an observable, stopping host updates from
 * being requested on new values, and removes the strong reference
 * to the observable.
 *
 * @remarks
 *
 * When called, if the observable is not strongly referenced by any other
 * part of the code, it may be garbage collected.
 */
export declare function untrack<T extends Observable<any>>(host: ReactiveControllerHost, observable: T): T;
export declare function untrack(host: ReactiveControllerHost): TrackingCurriedFn;
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