/**
 * Factory function to create a new LLM tracker.
 * The tracker is designed to be created once and reused for multiple customers.
 */
export declare function createLLMTracker(config: {
    apiKey: string;
    environment?: 'test_mode' | 'live_mode';
    eventName: string;
}): {
    /**
     * Wrap an LLM client to automatically track token usage
     *
     * @param args.client - The LLM client to wrap (OpenAI, Anthropic, Groq, etc.)
     * @param args.customerId - Unique customer identifier for billing
     * @param args.metadata - Additional metadata to attach to tracking events
     * @returns Wrapped client that automatically tracks usage
     *
     * @example
     * ```typescript
     * const wrappedClient = tracker.wrap({
     *   client: openai,
     *   customerId: 'cus_user123',
     *   metadata: { feature: 'chat' }
     * });
     * const response = await wrappedClient.chat.completions.create({...});
     * ```
     */
    wrap<T>(args: {
        client: T;
        customerId: string;
        metadata?: Record<string, any>;
    }): T;
    /**
     * Manual tracking for existing responses
     * @param response - The usage object to track
     * @param customerId - The customer ID to track the usage for
     * @param metadata - Additional metadata to attach to tracking events
     */
    track(response: any, customerId: string, metadata?: Record<string, any>): Promise<void>;
    /**
     * Health check
     * @returns True if the tracker is healthy, false otherwise
     */
    healthCheck(): Promise<boolean>;
};
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