export declare class UndefinedEnviromentVariableError extends Error {
    constructor(name: string);
}
export declare class ConfigVars {
    private dotEnv;
    constructor(envPath?: string);
    private getEnv;
    getNumberEnv(name: string, throwIfUndefined?: boolean): number;
    getStringEnv<T = string>(name: string, throwIfUndefined?: boolean): T;
    getBooleanEnv(name: string, throwIfUndefined?: boolean): boolean;
    getArrayEnv<T = string>(name: string, options?: {
        splitter: RegExp;
        throwIfUndefined: boolean;
    }): T[];
}