import type { CdpTransport } from "../../core/cdp/protocol.js";
/** Node WebSocket transport for the isomorphic CDP client. */
export declare class NodeCdpTransport implements CdpTransport {
    private readonly ws;
    private messageHandler;
    private closeHandler;
    constructor(url: string, headers?: Record<string, string>);
    ready(timeoutMs?: number): Promise<void>;
    send(data: string): void;
    onMessage(cb: (data: string) => void): void;
    onClose(cb: (reason?: string) => void): void;
    close(): Promise<void>;
}
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