import type { JsonRpcErrorPayload, JsonRpcFailure, JsonRpcId, JsonRpcMessage, JsonRpcNotification, JsonRpcRequest, JsonRpcResponse, JsonRpcSuccess } from "./types.js";
export declare const MCP_MAX_FRAME_BYTES: number;
export declare class JsonRpcError extends Error {
    readonly code: number;
    readonly data: unknown;
    constructor(payload: JsonRpcErrorPayload);
}
export declare function createRequest(id: JsonRpcId, method: string, params?: unknown): JsonRpcRequest;
export declare function createNotification(method: string, params?: unknown): JsonRpcNotification;
export declare function encodeMessage(message: JsonRpcMessage): string;
export declare function encodeLine(message: JsonRpcMessage): string;
export declare function isJsonRpcResponse(value: unknown): value is JsonRpcResponse;
export declare function isJsonRpcSuccess(value: JsonRpcResponse): value is JsonRpcSuccess;
export declare function isJsonRpcFailure(value: JsonRpcResponse): value is JsonRpcFailure;
export declare function isJsonRpcRequest(value: unknown): value is JsonRpcRequest;
export declare function isJsonRpcNotification(value: unknown): value is JsonRpcNotification;
export declare function parseMessage(line: string): JsonRpcMessage | undefined;
export declare function resultOrThrow(response: JsonRpcResponse): unknown;
export declare class LineDecoder {
    private buffer;
    private readonly decoder;
    private readonly maxBytes;
    constructor(maxBytes?: number);
    push(chunk: Uint8Array | string): string[];
    flush(): string[];
}
export interface SseEvent {
    readonly event: string;
    readonly data: string;
    readonly id?: string | undefined;
}
export declare class SseDecoder {
    private buffer;
    private readonly decoder;
    private readonly maxBytes;
    constructor(maxBytes?: number);
    push(chunk: Uint8Array | string): SseEvent[];
    private nextBoundary;
    private parseBlock;
}