import { BaseConverter } from '../converters/baseConverter';
/**
 * ConverterFactory
 * Singleton factory for creating and reusing converter instances.
 * Ensures only one instance per converter class for performance.
 */
export declare class ConverterFactory {
    private static instances;
    /**
     * Get or create an instance of a converter.
     * @param className The class name of the converter
     * @param creator Factory function to create a new instance if needed
     */
    static getInstance<T extends BaseConverter>(className: string, creator: () => T): T;
    /**
     * Clear all cached instances (useful for testing)
     */
    static clearInstances(): void;
}