/**
 * AI-friendly time formatting utilities with timezone and relative time info.
 */
export interface FormatTimeOptions {
    timezone?: string;
    referenceTime?: Date;
}
/**
 * Formats a Date as an AI-friendly time string with timezone and relative time.
 * Example output: "2024-01-15 14:30:45 (PST) 2h 15m ago"
 */
export declare function formatTimeAI(date: Date, options?: FormatTimeOptions): string;
/**
 * Formats a Date as an AI-friendly date-only string with timezone and relative time.
 * Example output: "2024-01-15 (PST) 3d ago"
 */
export declare function formatDateAI(date: Date, options?: FormatTimeOptions): string;
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