import type { ProgressCallback } from '../../common/file.js';
import { NullProvider } from './common.js';
import type { DownloadOptions, Provider } from './interface.js';
export declare class DownloadProvider implements Provider {
    browseable: boolean;
    next: NullProvider;
    private options;
    private store;
    constructor(options: DownloadOptions);
    download(url: string, progress_callback?: ProgressCallback): Promise<string>;
    upload(file: File): Promise<string>;
    delete(path: string): Promise<void>;
    exists(path: string): Promise<boolean | null>;
    read(path: string): Promise<Uint8Array | null>;
    write(files: Record<string, Uint8Array>): Promise<void>;
}
/** Fetch a storyfile, using the proxy if necessary, and handling JSified stories */
export declare function fetch_storyfile(options: DownloadOptions, url: string, progress_callback?: ProgressCallback): Promise<Uint8Array>;
/** Read an uploaded file and return it as a Uint8Array */
export declare function read_uploaded_file(file: File): Promise<Uint8Array>;