export declare class DateColumnArithemetic {
    private dates;
    private viewingDate;
    private selectedDate;
    private years;
    private months;
    constructor(dates: Date[], viewingDate: Date | null, selectedDate: Date | null, years: boolean, months: boolean);
    selected(n: Date): boolean;
    outOfMonth(i: number, n: Date): boolean;
    getButtonText(n: Date): string | number;
}