import { AsyncZippable, Unzipped } from 'fflate';
import { BaseEvents, CachedEvents, MinimalEvents } from '@tornado/core';
export declare function existsAsync(fileOrDir: string): Promise<boolean>;
export declare function zipAsync(file: AsyncZippable): Promise<Uint8Array>;
export declare function unzipAsync(data: Uint8Array): Promise<Unzipped>;
export declare function saveUserFile({ fileName, userDirectory, dataString, lastBlock, }: {
    fileName: string;
    userDirectory: string;
    dataString: string;
    lastBlock?: number;
}): Promise<void>;
export declare function saveLastBlock({ fileName, userDirectory, lastBlock, }: {
    fileName: string;
    userDirectory: string;
    lastBlock: number;
}): Promise<void>;
export declare function loadLastBlock({ name, directory }: {
    name: string;
    directory: string;
}): Promise<number | undefined>;
export declare function loadSavedEvents<T extends MinimalEvents>({ name, userDirectory, }: {
    name: string;
    userDirectory: string;
}): Promise<BaseEvents<T>>;
export declare function download({ name, cacheDirectory }: {
    name: string;
    cacheDirectory: string;
}): Promise<string>;
export declare function loadCachedEvents<T extends MinimalEvents>({ name, cacheDirectory, deployedBlock, }: {
    name: string;
    cacheDirectory: string;
    deployedBlock: number;
}): Promise<CachedEvents<T>>;