import type { Logger } from '@budarin/pluggable-serviceworker';
import type { FolderName, Pathname } from '../types.js';
export declare const OPFS_ERROR_FOLDER_NOT_REGISTERED = "OPFS_FOLDER_NOT_REGISTERED";
export declare const OPFS_ERROR_SERVICE_WORKER_UNAVAILABLE = "OPFS_SERVICE_WORKER_UNAVAILABLE";
export declare function getBackgroundFetchFilter(): Promise<{
    include?: string[];
    exclude?: string[];
}>;
export declare function getRegisteredFolders(): Promise<FolderName[]>;
export declare function filterAssetsForOpfs(assets: Pathname[], include?: string[], exclude?: string[]): Pathname[];
export interface DownloadAssetsToOpfsResult {
    registrationId: string;
    assets?: Pathname[];
    written?: Pathname[];
    failedOrSkipped?: Pathname[];
    filteredOut?: Pathname[];
}
export interface DownloadAssetsToOpfsRejected {
    registrationId: string;
    reason: 'fail' | 'abort';
}
export type StartDownloadError = (Error & {
    code?: string;
}) | DownloadAssetsToOpfsRejected;
export interface StartDownloadAssetsToOpfsOptions {
    folderName: FolderName;
    assets: Pathname[];
    title?: string;
    icons?: {
        src: string;
        sizes?: string;
        type?: string;
    }[];
    totalDownloadSizeInBytes?: number;
    onProgress?: (downloaded: number, total: number) => void;
    onFileWritten?: (loadedAssets: Pathname[], totalCount: number) => void;
    signal?: AbortSignal;
    logger?: Logger;
}
export declare function startDownloadAssetsToOpfs(options: StartDownloadAssetsToOpfsOptions): Promise<DownloadAssetsToOpfsResult>;
export declare function estimateAssetsSizeInBytes(assets: Pathname[]): Promise<{
    totalSize: number;
    sizes: Record<Pathname, number>;
}>;