/** GET JSON helper */
declare function getJSON<T = any>(path: string, init?: RequestInit): Promise<T>;
/** POST JSON helper */
declare function postJSON<T = any>(path: string, body: any, init?: RequestInit): Promise<T>;
/** Upload a file with form-data; extraFields merged into form */
declare function upload(path: string, file: File | Blob, extraFields?: Record<string, string | number | boolean>): Promise<Response>;
/** Download as blob; caller decides how to save */
declare function download(path: string, init?: RequestInit): Promise<Blob>;
export declare const http: {
    getJSON: typeof getJSON;
    postJSON: typeof postJSON;
    upload: typeof upload;
    download: typeof download;
};
export {};