<?php
declare(strict_types=1);
namespace Dotenv\Repository;
interface RepositoryInterface
{
/**
* Determine if the given environment variable is defined.
*
* @param string $name
*
* @return bool
*/
public function has(string $name);
/**
* Get an environment variable.
*
* @param string $name
*
* @throws \InvalidArgumentException
*
* @return string|null
*/
public function get(string $name);
/**
* Set an environment variable.
*
* @param string $name
* @param string $value
*
* @throws \InvalidArgumentException
*
* @return bool
*/
public function set(string $name, string $value);
/**
* Clear an environment variable.
*
* @param string $name
*
* @throws \InvalidArgumentException
*
* @return bool
*/
public function clear(string $name);
}