/**
 * Configuration loader and manager
 */
import type { CcanywhereConfig } from '../types/index.js';
export declare class ConfigLoader {
    private static instance;
    private cachedConfig?;
    private static logger;
    private constructor();
    static getInstance(): ConfigLoader;
    /**
     * Reset the singleton instance (for testing purposes)
     */
    static reset(): void;
    /**
     * Load configuration from file or environment
     */
    loadConfig(configPath?: string, projectPath?: string): Promise<CcanywhereConfig>;
    /**
     * Load configuration from a file
     */
    private loadFromFile;
    /**
     * Load configuration from user-level config directory (~/.claude/)
     */
    private loadFromUserConfig;
    /**
     * Load configuration from environment variables
     */
    private loadFromEnv;
    /**
     * Merge two configuration objects with deep merging support
     */
    private mergeConfigs;
    /**
     * Deep merge helper for nested objects
     */
    private deepMerge;
    /**
     * Apply backward compatibility transformations
     */
    private applyBackwardCompatibility;
    /**
     * Clear cached configuration
     */
    clearCache(): void;
    /**
     * Get current configuration (must be loaded first)
     */
    getCurrentConfig(): CcanywhereConfig;
}
//# sourceMappingURL=loader.d.ts.map