import { TimezoneComparison } from '@multisystemsuite/timezone-engine-shared-types';

/** Compare two timezones */
declare function compareTimezones(source: string, target: string, date?: Date | string | number): TimezoneComparison;
/** Compare multiple timezones against a reference */
declare function compareMultipleTimezones(reference: string, targets: string[], date?: Date | string | number): TimezoneComparison[];
/** Find best meeting time across timezones (simple overlap window) */
declare function findCommonWorkingHours(timezones: string[], workStartHour?: number, workEndHour?: number, date?: Date): {
    startHourUTC: number;
    endHourUTC: number;
    overlapHours: number;
};
/** Timezone-safe instant comparison — compares UTC instants, not wall-clock strings */
declare function timezoneSafeCompare(a: Date | string | number, b: Date | string | number, timezoneA?: string, timezoneB?: string): {
    equal: boolean;
    differenceMs: number;
    aUTC: Date;
    bUTC: Date;
};

export { compareMultipleTimezones, compareTimezones, findCommonWorkingHours, timezoneSafeCompare };