/**
 * Creates an RFC 3339 compliant timestamp string with an optional UTC offset.
 *
 * @param offsetHours - The number of hours to offset from UTC. Positive values
 *                      represent hours ahead of UTC, negative values represent
 *                      hours behind UTC. Defaults to 0 (UTC).
 * @returns A string representing the current date and time in RFC 3339 format
 *          with the specified UTC offset.
 *
 * @example
 * // Returns current time in UTC
 * createTimestamp();
 *
 * @example
 * // Returns current time with +2 hours offset
 * createTimestamp(2);
 *
 * @example
 * // Returns current time with -5 hours offset
 * createTimestamp(-5);
 */
export declare const createTimestamp: (offsetHours?: number) => string;
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