import ImportOptions from './ImportOptions';
import { AbortSignal } from '../common/AbortSignal';
export default class ImportUtil {
    static throwError(message: string): void;
    static knownBadProposalCids: string[];
    private static validateImportOptions;
    static startImportLoop(options: ImportOptions, abortSignal?: AbortSignal): Promise<void>;
    private static downloadFile;
    private static download;
    private static importDeal;
    private static startImport;
}