import "../_dnt.polyfills.js";
export interface RpcEgressMessage extends RpcBaseMessage {
    id: number;
    method: string;
    params: unknown[];
}
export declare namespace RpcEgressMessage {
    function fmt(id: number, method: string, params: unknown[]): string;
}
export type RpcIngressMessage = RpcOkMessage | RpcErrorMessage | RpcNotificationMessage;
export type RpcCallMessage = RpcOkMessage | RpcErrorMessage;
export type RpcSubscriptionMessage = RpcNotificationMessage | RpcErrorMessage;
export type RpcSubscriptionHandler = (message: RpcSubscriptionMessage) => void;
export interface RpcOkMessage extends RpcBaseMessage {
    id: number;
    result: unknown;
    params?: never;
    error?: never;
}
export interface RpcErrorMessage extends RpcBaseMessage {
    id: number;
    error: {
        code: number;
        message: string;
        data: unknown;
    };
    params?: never;
    result?: never;
}
export interface RpcNotificationMessage extends RpcBaseMessage {
    method: string;
    id?: never;
    params: {
        subscription: string;
        result: unknown;
    };
    result?: never;
    error?: never;
}
interface RpcBaseMessage {
    jsonrpc: "2.0";
}
export declare class ConnectionError extends Error {
    readonly name = "ConnectionError";
}
export declare class ServerError extends Error {
    readonly name = "ServerError";
    code: number;
    data: unknown;
    constructor({ error: { code, data, message } }: RpcErrorMessage);
}
export {};