/**
 * Utility functions for SAP date and timestamp formatting
 *
 * Provides comprehensive date handling utilities for SAP Integration Suite including:
 * - Timestamp formatting for API responses
 * - OData date filters
 * - SAP date format parsing and conversion
 *
 * @module date-formatter
 * @packageDocumentation
 */
/**
 * Converts an SAP timestamp to a readable date format
 *
 * @param {string | number | null | undefined} timestamp - SAP timestamp as string or number (milliseconds since epoch)
 * @returns {string} Formatted date as string, or the original value if no valid conversion is possible
 *
 * @example
 * // Basic usage
 * const formattedDate = formatSapTimestamp("1617189600000");
 * // Returns: "31.03.2021, 12:00:00" (depending on locale)
 *
 * @example
 * // Handle invalid values
 * formatSapTimestamp(null); // Returns: ""
 * formatSapTimestamp("invalid"); // Returns: "invalid"
 */
export declare function formatSapTimestamp(timestamp: string | number | null | undefined): string;
/**
 * Recursively traverse an object and apply timestamp formatting to timestamp fields
 *
 * This function identifies potential timestamp fields based on field name patterns
 * (containing 'date' or 'time') and also specific known SAP timestamp field names.
 *
 * @param {any} obj - The object to process
 * @returns {any} The processed object with formatted timestamps
 *
 * @example
 * // Format timestamps in an API response
 * const response = await client.integrationContent.integrationPackages.integrationPackagesList();
 * const formattedResponse = formatSapTimestampsInObject(response.data);
 *
 * // This will format fields like CreationDate, ModifiedDate, etc.
 */
export declare function formatSapTimestampsInObject(obj: any): any;
/**
 * Utility functions for SAP date handling in OData requests
 * These are primarily used for OData filtering and date conversion
 */
export declare class SapDateUtils {
    /**
     * Formats a date for SAP OData filter expressions
     *
     * @param {Date | string} date Date to format
     * @returns {string} Formatted date string for SAP OData filtering
     */
    static formatDateForFilter(date: Date | string): string;
    /**
     * Creates an OData datetime filter expression
     *
     * @param {string} fieldName Name of the date field
     * @param {string} operator Comparison operator (eq, ne, gt, ge, lt, le)
     * @param {Date | string} date Date value to compare against
     * @returns {string} Complete OData filter expression
     */
    static createDateTimeFilter(fieldName: string, operator: 'eq' | 'ne' | 'gt' | 'ge' | 'lt' | 'le', date: Date | string): string;
    /**
     * Parses an SAP OData date string to a JavaScript Date
     *
     * @param {string} sapDateString Date string in SAP format (e.g. "/Date(1234567890)/")
     * @returns {Date | null} JavaScript Date object or null if invalid
     */
    static parseSapDate(sapDateString: string): Date | null;
    /**
     * Formats an SAP OData date string to a readable string
     *
     * @param {string} sapDateString Date string in SAP format
     * @param {Intl.DateTimeFormatOptions} options Formatting options
     * @returns {string} Formatted date string or the original if invalid
     */
    static formatSapDate(sapDateString: string, options?: Intl.DateTimeFormatOptions): string;
    /**
     * Ensures that all datetime values in a filter string are properly formatted
     * for SAP OData (removing 'Z' and milliseconds)
     *
     * @param {string} filter The OData filter string to process
     * @returns {string} Filter string with correctly formatted datetime values
     */
    static sanitizeFilterDatetimes(filter: string): string;
}