import { AbsoluteTimeRange, TimeRangeValue } from '@perses-dev/spec';
export declare const DATE_TIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
export interface CustomTimeOption {
    value: TimeRangeValue | undefined;
    display: string;
}
export declare function buildCustomTimeOption(value: AbsoluteTimeRange | undefined, timeZone: string): CustomTimeOption;
/**
 * Date validation and check if end is after start
 */
export declare function validateDateRange(startDate: Date, endDate: Date): boolean;
/**
 * Format start and end time based on provided date format
 * @param timeRange absolute time range with a start and end datetime
 * @param dateFormat date format string
 * @param timeZone
 */
export declare function formatAbsoluteRange(timeRange: AbsoluteTimeRange, dateFormat: string, timeZone?: string): string;
/**
 * Format the time range for display purpose only (e.g. in the selector)
 * @param value
 * @param timeZone
 */
export declare function formatTimeRange(value: TimeRangeValue | undefined, timeZone: string): string;
//# sourceMappingURL=utils.d.ts.map