import { LockOptions, SubscribedStream } from '@powersync/shared-internals';
import { WebStreamingSyncImplementation, WebStreamingSyncImplementationOptions } from './WebStreamingSyncImplementation.js';
/**
 * When multi-tab support is disabled and we don't use a shared worker for sync, only a single tab will be able to
 * acquire the sync navigator lock and start a sync iteration.
 *
 * To be able to provide _some_ multi-tab support in that configuration, this utility:
 *
 * 1. Sends sync status updates from the syncing tab to others.
 * 2. Allows other tabs to send notifications when their active sync stream subscriptions update, allowing the active
 *    tab to take those subscriptions into account.
 */
export declare class TabLocalStreamingSyncImplementation extends WebStreamingSyncImplementation {
    #private;
    constructor(options: WebStreamingSyncImplementationOptions);
    updateSubscriptions(subscriptions: SubscribedStream[]): void;
    obtainLock<T>({ callback, type, signal }: LockOptions<T>): Promise<T>;
    dispose(): Promise<void>;
}