/**
 * Error thrown by `CorePikkuFetch` for any non-2xx response.
 *
 * Pikku serializes a typed server error as a JSON body of the shape
 * `{ name, message }`. This class decodes that body so the thrown value is a
 * real `Error` — `error.message` is the server's message (not `[object
 * Response]`), `error.name` is the server error's name (e.g. `ConflictError`),
 * and `error.status` is the HTTP status. The original `Response` is kept on
 * `error.response` for consumers that need headers or the raw body.
 */
export declare class PikkuFetchError extends Error {
    readonly status: number;
    readonly statusText: string;
    readonly response: Response;
    readonly body: unknown;
    constructor(response: Response, body: unknown, message: string, name: string);
    /**
     * Builds a `PikkuFetchError` from a non-2xx `Response`, decoding the typed
     * error body when present. Reads from a clone so `response.body` stays
     * consumable by callers that reach for it.
     */
    static fromResponse(response: Response): Promise<PikkuFetchError>;
}