import { Disposable } from "@codingame/monaco-vscode-api/vscode/vs/base/common/lifecycle";
import type { IChannel } from "@codingame/monaco-vscode-api/vscode/vs/base/parts/ipc/common/ipc";
import type { AhpServerNotification, JsonRpcResponse, ProtocolMessage } from "@codingame/monaco-vscode-api/vscode/vs/platform/agentHost/common/state/sessionProtocol";
import type { IClientTransport } from "../common/state/sessionTransport.js";
/**
 * Wraps an {@link IChannel} as an {@link IClientTransport} for the agent
 * host protocol. Frames are passed as JSON strings to avoid the IPC layer's
 * URI revival (URIs in AHP are string-typed on the wire).
 *
 * Wire shape:
 * - `listen('frame')` → emits each upstream JSON frame as a string.
 * - `listen('close')` → fires when the upstream connection closes.
 * - `call('connect')` → opens the upstream connection; resolves when ready.
 * - `call('send', frame)` → forwards a JSON frame upstream.
 */
export declare class AgentHostIpcChannelTransport extends Disposable implements IClientTransport {
    private readonly _channel;
    private readonly _onMessage;
    readonly onMessage: import("@codingame/monaco-vscode-api/vscode/vs/base/common/event").Event<ProtocolMessage>;
    private readonly _onClose;
    readonly onClose: import("@codingame/monaco-vscode-api/vscode/vs/base/common/event").Event<void>;
    private _isOpen;
    private _closeFired;
    private _malformedFrames;
    constructor(_channel: IChannel);
    get isOpen(): boolean;
    connect(): Promise<void>;
    send(message: ProtocolMessage | AhpServerNotification | JsonRpcResponse): void;
    dispose(): void;
    private _handleFrame;
    private _fireClose;
}