/**
 * Error thrown when a server function call fails.
 * Available on both client and server.
 */
export declare class ServerFunctionError extends Error {
    /** The unique function ID. */
    readonly fnId: string;
    /** HTTP status code from the server. */
    readonly status: number;
    /** Structured error data from the server (if any). */
    readonly data?: unknown;
    constructor(message: string, fnId: string, status: number, options?: {
        cause?: Error;
        data?: unknown;
    });
}
/**
 * Throwable error for server functions to return structured error data.
 *
 * @example
 * ```ts
 * export async function getUser(id: string) {
 *   const user = db.find(id);
 *   if (!user) throw new ServerError("User not found", { status: 404, data: { id } });
 *   return user;
 * }
 * ```
 */
export declare class ServerError extends Error {
    readonly status: number;
    readonly data?: unknown;
    constructor(message: string, options?: {
        status?: number;
        data?: unknown;
    });
}
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