export declare class HelperTask {
    static startDateTime: any;
    static endDateTime: any;
    static taking(): string;
    static showVersion(): void;
    static setWatchModel(watchModel: boolean): typeof HelperTask;
    static start(): void;
    static end(): void;
    static cleanAsync(): Promise<void>;
    static setVersion(version: string): void;
    static getVersion(): string;
    static cleanAndReplaceAsync(): Promise<void>;
    static getSourceRoot(): string;
    static getOutDir(): string;
    static getWatchModel(): boolean;
    static isProduction(): boolean;
    static isDebug(): boolean;
    static clean(): void;
    static walkFile(src: string, watch: boolean, callbackMap: any): Promise<unknown>;
    private static version;
    private static prevDateTime;
    private static watchModel;
    private static walkFileHander;
}