import { type CodexNativeClientOptions, type CodexNativeMetadata } from "./codex-native-types.js";
/** Internal RPC transport, deliberately not exported through the public adapter. */
export declare class CodexNativeRpc {
    private transport;
    readonly timeoutMs: number;
    readonly metadata: CodexNativeMetadata;
    private sequence;
    private closed;
    private pending;
    private listeners;
    private unlisten;
    private constructor();
    static connect(options: CodexNativeClientOptions): Promise<CodexNativeRpc>;
    onEvent(listener: (message: Record<string, unknown>) => void): () => void;
    call(method: string, params: unknown, mutation?: boolean): Promise<unknown>;
    respond(id: string | number, result: unknown): void;
    close(): void;
    private receive;
    private receiveResponse;
    private finish;
}