export declare class Dt {
    private _date;
    static isParsable(date: string): boolean;
    static parse(date: string): Dt;
    private _locale;
    constructor(_date?: Date, locale?: string);
    setLocale(l: string): this;
    setYear(y: number): this;
    setMonth(m: number): this;
    startOfMonth(): this;
    endOfMonth(): this;
    setHour(h: number, m: number, sec: number): this;
    setDay(d: number): this;
    plus(amounts: {
        days?: number;
    }): this;
    minus(amounts: {
        days?: number;
    }): this;
    year(): number;
    month(): number;
    monthString(): string;
    dayOfMonth(type?: "padded"): string;
    dayOfWeek(): number;
    dayOfWeekString(format?: "long" | "short" | "narrow"): string;
    countDaysOfThisMonth(): number;
    localeString(dateStyle?: "full" | "long" | "medium" | "short"): string;
    iso(): string;
    isoDate(): string;
    jsDate(): Date;
    unix(): number;
    clone(): Dt;
    isSameDate(d: Dt): boolean;
}