import type { AnySchema, Schema, WebSocketTransport, WebSocketTransportConfig } from '@rpckit/core';
export interface EthereumWebSocketConfig extends WebSocketTransportConfig {
}
/**
 * WebSocket transport configured for Ethereum JSON-RPC.
 *
 * Handles Ethereum's subscription model where:
 * - `eth_subscribe` returns a subscription ID
 * - Notifications arrive via `eth_subscription` method with the subscription ID in params
 * - `eth_unsubscribe` is called with the subscription ID to clean up
 *
 * The subscription ID is captured internally and not delivered to the user callback.
 * Notifications are routed by matching the subscription ID.
 */
export declare function webSocket<S extends Schema = AnySchema>(url: string, options?: Omit<EthereumWebSocketConfig, 'url'>): WebSocketTransport<S>;
export declare function webSocket<S extends Schema = AnySchema>(config: EthereumWebSocketConfig): WebSocketTransport<S>;
//# sourceMappingURL=webSocket.d.ts.map