declare class EnvironmentVariables {
    PORT?: string;
    NODE_ENV?: string;
    DB_URL: string;
    DB_SSL?: string;
    REDIS_URL?: string;
    JWT_SECRET: string;
    JWT_ACCESS_TTL?: string;
    JWT_REFRESH_TTL?: string;
    SMS_API_KEY: string;
    SMS_WSDL_URL?: string;
    SMS_USERNAME?: string;
    SMS_PASSWORD?: string;
    SMS_NUMBER?: string;
    OTP_TTL_SECONDS?: string;
    MINIO_ENDPOINT?: string;
    MINIO_PORT?: string;
    MINIO_USE_SSL?: string;
    MINIO_ACCESS_KEY?: string;
    MINIO_SECRET_KEY?: string;
    MINIO_BUCKET?: string;
    MINIO_PUBLIC_BUCKET?: string;
    MINIO_PRIVATE_BUCKET?: string;
    MINIO_PUBLIC_URL?: string;
}
export declare function validateEnv(config: Record<string, unknown>): EnvironmentVariables;
export {};