/**
 * Copied from PivotTiles
 * @param date :  Format = new Date() or new Date(2015, 1, 21)
 */
export declare function getQuarter(date: Date): number;
/**
 * Created for GridCharts
 * @param theDate
 */
export declare function getYearMonthLabel(theDate: Date): any;
export declare function getLocalMonths(local: string, format: "numeric" | "2-digit" | "long" | "short" | "narrow" | undefined): string[];
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