import { DatePipe } from '@angular/common';
export declare const ISO8601_DATE_REGEX: RegExp;
export declare function parseDate(value: string): Date | null;
/**
 * Converts a date in ISO8601 to a Date.
 * Used instead of `Date.parse` because of browser discrepancies.
 */
export declare function isoStringToDate(match: RegExpMatchArray): Date;
export declare class UtcDatePipe extends DatePipe {
    transform(value: any, pattern?: string): string;
}