export declare class EnvironmentVarsLoader {
    static loadEnvironmentArgsFromString(envArgsString: string): void;
    /**
     * Attempts to load environment vars from specified envVarNames injected into container's OS
     * @param envVarNames The env var names' you defined in oni.yaml (APP_SECRETS)
     * @param fallbackAsLocalhost When true it loads from .env file whether no APP_SECRETS are defined
     */
    static loadFromContainerEnvVar(envVarNames: string[], fallbackAsLocalhost?: boolean): void;
    static loadEnvironmentArgsFromFile(filePath?: string): void;
    private static parseStringValue;
    private static parseDotEnv;
    private static parseDotEnvString;
}