export const PART_SIZE_THRESHOLD: number;

export interface SharedBackupPartManagerOptions {
  source?: string;
  revokeDelayMs?: number;
  interPartPauseMs?: number;
  finalPartPauseMs?: number;
  preserveAssetEntryDate?: boolean;
  downloadBlob?: (blob: Blob, filename: string, revokeDelayMs?: number) => Promise<void>;
  ZipCtor?: new () => unknown;
}

export class SharedBackupPartManager {
  constructor(baseFilename: string, backupId: string, options?: SharedBackupPartManagerOptions);
  addFile(path: string, content: unknown): void;
  addAssetBlob(
    path: string,
    blob: Blob,
    metaPath: string,
    metaContent: unknown,
    createdAt?: number
  ): Promise<void>;
  finalizePart(): Promise<void>;
  startNewPart(): void;
  finalizeAll(manifest: unknown): Promise<unknown>;
}