import 'dotenv/config';
/**
 * Loads environment variables from .env file.
 * Finds and loads .env file from project root.
 */
export declare function loadEnv(): void;
/**
 * Gets environment variable value with default fallback.
 * @param key Environment variable key
 * @param defaultValue Default value if not set
 * @returns Environment variable value or default
 */
export declare function getEnv(key: string, defaultValue?: string): string;
/**
 * Gets required environment variable value.
 * Throws error if value is not set.
 * @param key Environment variable key
 * @returns Environment variable value
 * @throws Error When environment variable is not set
 */
export declare function getRequiredEnv(key: string): string;
/**
 * Gets safe environment variables for logging (masks sensitive values)
 */
export declare function getSafeEnvVars(): Record<string, string>;
/**
 * Check if running in development mode
 */
export declare function isDevelopment(): boolean;
/**
 * Check if running in production mode
 */
export declare function isProduction(): boolean;
/**
 * Prints environment variable configuration status.
 */
export declare function printEnvStatus(): void;
export declare const EnvLoader: {
    load: typeof loadEnv;
    get: typeof getEnv;
    getRequired: typeof getRequiredEnv;
    printStatus: typeof printEnvStatus;
};