<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2023 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Psy;

/**
 * Abstraction around environment variables.
 */
interface EnvInterface
{
    /**
     * Get an environment variable by name.
     *
     * @return string|null
     */
    public function get(string $key);
}

• [D] CodeCleaner
• [D] Command
• [D] Exception
• [D] ExecutionLoop
• [D] Formatter
• [D] Input
• [D] Output
• [D] Readline
• [D] Reflection
• [D] Sudo
• [D] TabCompletion
• [D] Util
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• [D] VersionUpdater
• [F] CodeCleaner.php
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• [F] ConfigPaths.php
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• [F] Configuration.php
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• [F] Context.php
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• [F] ContextAware.php
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• [F] EnvInterface.php
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• [F] ExecutionClosure.php
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• [F] ExecutionLoopClosure.php
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• [F] functions.php
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• [F] ParserFactory.php
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• [F] Shell.php
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• [F] Sudo.php
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• [F] SuperglobalsEnv.php
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• [F] SystemEnv.php
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