import { ICaseTransformOptions, ICaseTransformResult } from '../interfaces';
/**
 * OOP-based Casefy service for JSON case transformation
 */
export declare class CasefyService {
    private fromTransformer;
    private toTransformer;
    private options;
    private enableLogging;
    constructor(fromCase: string, toCase: string, options?: ICaseTransformOptions);
    /**
     * Enable or disable transformation logging
     * @param enabled - Whether to enable logging
     */
    setLogging(enabled: boolean): void;
    /**
     * Transform the input data
     * @param input - The input data to transform
     * @returns The transformation result
     */
    transform(input: any): ICaseTransformResult;
    /**
     * Depth-first search transformation
     * @param input - The input data
     * @param path - The current path
     * @param depth - The current depth
     * @returns The transformation result
     */
    private dfsTransform;
    /**
     * Check if a field should be excluded
     * @param key - The field key
     * @param context - The transformation context
     * @returns True if the field should be excluded
     */
    private shouldExcludeField;
    /**
     * Check if a field should be included (whitelist mode)
     * @param key - The field key
     * @param context - The transformation context
     * @returns True if the field should be included
     */
    private shouldIncludeField;
    /**
     * Get mapped field name if specified
     * @param key - The original field key
     * @returns The mapped field name or null
     */
    private getMappedField;
    /**
     * Get transformation statistics
     * @returns Statistics about the transformation
     */
    getStats(): {
        fromCase: string;
        toCase: string;
        options: ICaseTransformOptions;
        availableTransformers: string[];
    };
}
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