import { SyncBackend } from '@livestore/common';
import { type Duration, Effect, type Scope } from '@livestore/utils/effect';
import type { WebSocket } from '@livestore/utils/effect/browser';
import type { SyncMetadata } from '../../common/sync-message-types.ts';
export interface WsSyncOptions {
    /**
     * URL of the sync backend
     *
     * The protocol can either `http`/`https` or `ws`/`wss`
     *
     * @example 'https://sync.example.com'
     */
    url: string;
    /**
     * Optional WebSocket factory for custom WebSocket implementations (e.g., Cloudflare Durable Objects)
     * If not provided, uses standard WebSocket from @livestore/utils/effect
     */
    webSocketFactory?: (wsUrl: string) => Effect.Effect<globalThis.WebSocket, WebSocket.WebSocketError, Scope.Scope>;
    ping?: {
        /**
         * @default true
         */
        enabled?: boolean;
        /**
         * How long to wait for a ping response before timing out
         * @default 10 seconds
         */
        requestTimeout?: Duration.DurationInput;
        /**
         * How often to send ping requests
         * @default 10 seconds
         */
        requestInterval?: Duration.DurationInput;
    };
}
/**
 * Creates a sync backend that uses WebSocket to communicate with the sync backend.
 *
 * @example
 * ```ts
 * import { makeWsSync } from '@livestore/sync-cf/client'
 *
 * const syncBackend = makeWsSync({ url: 'wss://sync.example.com' })
 */
export declare const makeWsSync: (options: WsSyncOptions) => SyncBackend.SyncBackendConstructor<SyncMetadata>;
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