/// <reference types="node" />
import { Lock } from './lock';
import { Config } from 'cli-engine-config';
export declare type Version = {
    version: string;
    channel: string;
    message?: string;
};
export declare type Manifest = {
    version: string;
    channel: string;
    sha256gz: string;
};
export declare class Updater {
    config: Config;
    lock: Lock;
    constructor(config: Config);
    readonly autoupdatefile: string;
    readonly autoupdatelogfile: string;
    readonly versionFile: string;
    private readonly clientRoot;
    private readonly clientBin;
    private _binPath;
    private readonly binPath;
    s3url(channel: string, p: string): string;
    fetchManifest(channel: string): Promise<Manifest>;
    fetchVersion(download: boolean): Promise<Version>;
    _catch(fn: Function): Promise<any>;
    update(manifest: Manifest): Promise<void>;
    extract(stream: NodeJS.ReadableStream, dir: string, sha: string): Promise<void>;
    private _rename(from, to);
    private _remove(dir);
    private _mkdirp(dir);
    base(manifest: Manifest): string;
    private autoupdateNeeded();
    autoupdate(force?: boolean): Promise<void>;
    readonly timestampEnvVar: string;
    readonly skipAnalyticsEnvVar: string;
    readonly autoupdateEnv: {
        [k: string]: string;
    };
    warnIfUpdateAvailable(): Promise<void>;
    spawnBinPath(binPath: string, args: string[], options: Object): any;
    private _createBin(dst, manifest);
}