/**
 * Gets the timezone offset in hours and timezone name for the company's timezone
 * (uses cached {@link getCompanyInfo} — no extra HTTP when already loaded).
 * @returns Promise<{ offset: number; timezone: string }> The timezone offset in hours and timezone name
 * @throws Error if unable to fetch timezone information
 */
export declare const getTimezoneOffset: () => Promise<{
    offset: number;
    timezone: string;
}>;
/**
 * Converts a UTC/Zulu time to local time based on the provided timezone offset
 * @param zuluTime The UTC/Zulu time to convert
 * @param timezoneOffset The timezone offset in hours
 * @returns The converted local time, or undefined if input is null/undefined
 */
export declare const convertToLocalTime: (zuluTime: string | Date | null | undefined, timezoneOffset: number) => Date | undefined;
/**
 * Formats a date with the timezone offset in ISO format with offset
 * @param date The date string in format YYYY-MM-DD HH:mm:ss or YYYY-MM-DDTHH:mm:ss
 * @param timezoneOffset The timezone offset in hours
 * @returns The formatted date string in format: YYYY-MM-DDTHH:mm:ss+/-HH:MM
 */
export declare const formatDateWithTZOffset: (date: string | null | undefined, timezoneOffset: number) => string | undefined;
/**
 * Formats a Date object as an ISO string with the specified timezone offset
 * @param date The Date object to format (should be a Date that has been shifted by convertToLocalTime)
 * @param timezoneOffset The timezone offset in hours
 * @returns ISO string with offset in format: YYYY-MM-DDTHH:mm:ss.SSS±HH:MM
 */
export declare const toISOWithOffset: (date: Date, timezoneOffset: number) => string;
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