/**
 * Configuration management for In Memoria
 * Centralizes all configuration with proper defaults and validation
 */
export interface InMemoriaConfig {
    database: {
        filename: string;
        path?: string;
        connectionPoolSize?: number;
        busyTimeout?: number;
    };
    performance: {
        batchSize: number;
        maxConcurrentFiles: number;
        fileOperationTimeout: number;
        cacheSize: number;
    };
    api: {
        requestTimeout: number;
        rateLimitRequests: number;
        rateLimitWindow: number;
    };
    analysis: {
        supportedLanguages: string[];
        maxFileSize: number;
        skipDirectories: string[];
        skipFilePatterns: string[];
    };
    logging: {
        level: 'error' | 'warn' | 'info' | 'debug';
        enablePerformanceLogging: boolean;
    };
}
export declare class ConfigManager {
    private static instance;
    private config;
    private constructor();
    static getInstance(): ConfigManager;
    getConfig(): InMemoriaConfig;
    /**
     * Get database path for a specific project
     * Always places the database within the analyzed project directory
     */
    getDatabasePath(projectPath?: string): string;
    /**
     * Update configuration at runtime
     */
    updateConfig(partial: Partial<InMemoriaConfig>): void;
    /**
     * Validate configuration for common issues
     */
    validateConfig(): {
        isValid: boolean;
        errors: string[];
    };
    /**
     * Load configuration from environment variables
     */
    private loadFromEnvironment;
    /**
     * Get environment-specific configuration hints
     */
    getConfigurationHelp(): string[];
}
export declare const config: ConfigManager;
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