/**
 * Time formatting utilities for CLI display
 */
/**
 * Format a receipt timestamp for display.
 * Handles both Unix timestamps (numbers) and ISO 8601 strings gracefully.
 *
 * @param ts - Timestamp as either Unix seconds (number) or ISO 8601 string
 * @returns Formatted ISO 8601 string or original value if unparseable
 */
export declare function formatReceiptTs(ts: string | number): string;
/**
 * Check if a timestamp is using the deprecated numeric format
 *
 * @param ts - Timestamp to check
 * @returns true if the timestamp is a deprecated numeric format
 */
export declare function isDeprecatedTimestamp(ts: string | number): boolean;
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