interface DateAdapter<Date> {
    date(value?: any): Date | null;
    format(date: Date, formatString: string): string;
    startOfMonth(date: Date): Date;
    endOfMonth(date: Date): Date;
    startOfYear(date: Date): Date;
    endOfYear(date: Date): Date;
    isAfter(date: Date, comparing: Date): boolean;
    isEqual(date: Date, comparing: Date): boolean;
    isSameDay(date: Date, comparing: Date): boolean;
    isSameMonth(date: Date, comparing: Date): boolean;
    isValid(date: any): boolean;
    isWithinRange(date: Date, range: [Date, Date]): boolean;
    addDays(date: Date, amount: number): Date;
    addMonths(date: Date, amount: number): Date;
    getYear(date: Date): number;
    setYear(date: Date, year: number): Date;
    getDiff(date: Date, comparing: Date | string, unit?: string): number;
    getWeek(date: Date): number;
    getWeekArray(date: Date): (Date | null)[][];
    getWeekdays(): string[];
    getMonth(date: Date): number;
}

declare function getWeek(date: Date): number;
declare class VuetifyDateAdapter implements DateAdapter<Date> {
    locale: string;
    constructor(locale?: string);
    date(value?: any): Date | null;
    addDays(date: Date, amount: number): Date;
    addMonths(date: Date, amount: number): Date;
    getWeekArray(date: Date): (Date | null)[][];
    startOfMonth(date: Date): Date;
    endOfMonth(date: Date): Date;
    format(date: Date, formatString: string): string;
    isEqual(date: Date, comparing: Date): boolean;
    isValid(date: any): boolean;
    isWithinRange(date: Date, range: [Date, Date]): boolean;
    isAfter(date: Date, comparing: Date): boolean;
    isSameDay(date: Date, comparing: Date): boolean;
    isSameMonth(date: Date, comparing: Date): boolean;
    setYear(date: Date, year: number): Date;
    getDiff(date: Date, comparing: Date | string, unit?: string): number;
    getWeek(date: Date): number;
    getWeekdays(): string[];
    getYear(date: Date): number;
    getMonth(date: Date): number;
    startOfYear(date: Date): Date;
    endOfYear(date: Date): Date;
}

export { VuetifyDateAdapter, getWeek };