export declare class TokenCounter {
    /**
     * Estimates the number of tokens in a string.
     * Uses a simple heuristic: ~4 characters per token.
     *
     * @param text - Text to count tokens for
     * @returns Estimated token count
     */
    count(text: string): number;
    /**
     * Estimates tokens for a specific model (placeholder for future expansion).
     *
     * @param text - Text to count
     * @param model - Model identifier
     * @returns Estimated token count
     */
    countForModel(text: string, model: string): number;
}