import { type CalendarDateIdentity, type CalendarSystem, type Timestamp } from '@timestamp-js/core';
export interface CalendarScopeData {
    /** Timestamp represented in the configured calendar system. */
    calendarTimestamp: Timestamp;
    /** Stable native and Gregorian identity for the configured calendar system. */
    calendarIdentity: CalendarDateIdentity;
    /** Calendar system used to create `calendarTimestamp`. */
    calendarSystem: CalendarSystem;
}
export declare function getResolvedCalendarSystem(calendarSystem?: CalendarSystem): CalendarSystem;
export declare function isGregorianCalendar(calendarSystem?: CalendarSystem): boolean;
export declare function toCalendarTimestamp(timestamp: Timestamp, calendarSystem?: CalendarSystem): Timestamp;
export declare function toGregorianTimestamp(timestamp: Timestamp, calendarSystem?: CalendarSystem): Timestamp;
export declare function getCalendarScopeData(timestamp: Timestamp, calendarSystem?: CalendarSystem): CalendarScopeData;
export declare function getCalendarDateIdentifier(value: string | undefined, calendarSystem?: CalendarSystem): number | null;
export declare function parseCalendarTimestampSafe(value: string | undefined, calendarSystem?: CalendarSystem, fallback?: Timestamp): Timestamp | null;
export declare function isOutsideCalendarMonth(timestamp: Timestamp, reference: Timestamp, calendarSystem?: CalendarSystem): boolean;