import { type LitElement, type ReactiveController } from 'lit';
/**
 * Reactive controller that allows a host component to resolve ID references
 * scoped to its root node, and react to changes in those references.
 */
declare class IdRefResolverController implements ReactiveController {
    private readonly _host;
    private readonly _callback;
    private _active;
    private _connected;
    private _emitter;
    constructor(host: LitElement, callback: (ids: Set<string>) => unknown);
    private _observe;
    private _unobserve;
    /** @internal */
    handleEvent(event: Event): void;
    /** @internal */
    hostConnected(): void;
    /** @internal */
    hostDisconnected(): void;
    /** Start tracking ID reference changes in the document. */
    observe(): void;
    /** Stop tracking ID reference changes in the document. */
    unobserve(): void;
}
/**
 * Adds an ID reference resolver controller to the host component, allowing it to resolve ID references scoped to
 * its root node and react to changes in those references.
 */
export declare function addIdRefResolver(host: LitElement, callback: (ids: Set<string>) => unknown): IdRefResolverController;
export type { IdRefResolverController };