import { Transport } from "@modelcontextprotocol/sdk/shared/transport.js";
import { JSONRPCMessage } from "@modelcontextprotocol/sdk/types.js";
/**
 * Base transport interface
 */
export interface BaseTransport extends Transport {
    onclose?: (() => void) | undefined;
    onerror?: ((error: Error) => void) | undefined;
    onmessage?: ((message: JSONRPCMessage) => void) | undefined;
    send(message: JSONRPCMessage): Promise<void>;
    close(): Promise<void>;
    start(): Promise<void>;
    /**
     * The type of transport (e.g., "stdio", "sse")
     */
    readonly type: string;
    /**
     * Returns whether the transport is currently running
     */
    isRunning(): boolean;
}
/**
 * Abstract base class for transports that implements common functionality
 */
export declare abstract class AbstractTransport implements BaseTransport {
    abstract readonly type: string;
    protected _onclose?: () => void;
    protected _onerror?: (error: Error) => void;
    protected _onmessage?: (message: JSONRPCMessage) => void;
    set onclose(handler: (() => void) | undefined);
    set onerror(handler: ((error: Error) => void) | undefined);
    set onmessage(handler: ((message: JSONRPCMessage) => void) | undefined);
    abstract start(): Promise<void>;
    abstract send(message: JSONRPCMessage): Promise<void>;
    abstract close(): Promise<void>;
    abstract isRunning(): boolean;
}