import { ICaseTransformer } from '../interfaces';
/**
 * Factory class for creating case transformers using lazy initialization and singleton pattern
 * Follows clean architecture principles:
 * - Lazy initialization (create only when needed)
 * - Auto-registration (no manual initialization)
 * - Singleton pattern (one instance per case style)
 * - Open/Closed principle (easy to extend)
 */
export declare class CaseTransformerFactory {
    private static instances;
    private static customTransformers;
    /**
     * Get a transformer by case style name (lazy initialization)
     * @param caseStyle - The case style name
     * @returns The transformer instance
     * @throws Error if transformer not found
     */
    static getTransformer(caseStyle: string): ICaseTransformer;
    /**
     * Register a custom transformer
     * @param caseStyle - The case style name
     * @param transformer - The transformer instance
     */
    static registerTransformer(caseStyle: string, transformer: ICaseTransformer): void;
    /**
     * Get all available case styles (auto-discovered)
     * @returns Array of case style names
     */
    static getAvailableCaseStyles(): string[];
    /**
     * Get all transformers (lazy-loaded)
     * @returns Map of case style to transformer
     */
    static getAllTransformers(): Map<string, ICaseTransformer>;
    /**
     * Check if a case style is supported
     * @param caseStyle - The case style name
     * @returns True if supported
     */
    static isSupported(caseStyle: string): boolean;
    /**
     * Auto-detect case style from a string
     * @param input - The input string
     * @returns The detected case style or null
     */
    static detectCaseStyle(input: string): string | null;
    /**
     * Get transformer information
     * @param caseStyle - The case style name
     * @returns Transformer information object
     */
    static getTransformerInfo(caseStyle: string): {
        name: string;
        description: string;
    } | null;
    /**
     * Clear all registered transformers
     */
    static clear(): void;
    /**
     * Reset to default state (clear all instances)
     */
    static reset(): void;
    /**
     * Get factory statistics
     * @returns Factory statistics object
     */
    static getStats(): {
        totalAvailable: number;
        instancesCreated: number;
        customTransformers: number;
    };
}
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