Add vendor and .env to make usable

vendor/symfony/routing/Loader/Configurator/CollectionConfigurator.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Loader\Configurator;
+
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class CollectionConfigurator
+{
+    use Traits\AddTrait;
+    use Traits\RouteTrait;
+
+    private $parent;
+
+    public function __construct(RouteCollection $parent, $name)
+    {
+        $this->parent = $parent;
+        $this->name = $name;
+        $this->collection = new RouteCollection();
+        $this->route = new Route('');
+    }
+
+    public function __destruct()
+    {
+        $this->collection->addPrefix(rtrim($this->route->getPath(), '/'));
+        $this->parent->addCollection($this->collection);
+    }
+
+    /**
+     * Adds a route.
+     *
+     * @param string $name
+     * @param string $path
+     *
+     * @return RouteConfigurator
+     */
+    final public function add($name, $path)
+    {
+        $this->collection->add($this->name.$name, $route = clone $this->route);
+
+        return new RouteConfigurator($this->collection, $route->setPath($path), $this->name);
+    }
+
+    /**
+     * Creates a sub-collection.
+     *
+     * @return self
+     */
+    final public function collection($name = '')
+    {
+        return new self($this->collection, $this->name.$name);
+    }
+
+    /**
+     * Sets the prefix to add to the path of all child routes.
+     *
+     * @param string $prefix
+     *
+     * @return $this
+     */
+    final public function prefix($prefix)
+    {
+        $this->route->setPath($prefix);
+
+        return $this;
+    }
+}

vendor/symfony/routing/Loader/Configurator/ImportConfigurator.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Loader\Configurator;
+
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class ImportConfigurator
+{
+    use Traits\RouteTrait;
+
+    private $parent;
+
+    public function __construct(RouteCollection $parent, RouteCollection $route)
+    {
+        $this->parent = $parent;
+        $this->route = $route;
+    }
+
+    public function __destruct()
+    {
+        $this->parent->addCollection($this->route);
+    }
+
+    /**
+     * Sets the prefix to add to the path of all child routes.
+     *
+     * @param string $prefix
+     *
+     * @return $this
+     */
+    final public function prefix($prefix)
+    {
+        $this->route->addPrefix($prefix);
+
+        return $this;
+    }
+}

vendor/symfony/routing/Loader/Configurator/RouteConfigurator.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Loader\Configurator;
+
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class RouteConfigurator
+{
+    use Traits\AddTrait;
+    use Traits\RouteTrait;
+
+    public function __construct(RouteCollection $collection, Route $route, $name = '')
+    {
+        $this->collection = $collection;
+        $this->route = $route;
+        $this->name = $name;
+    }
+}

vendor/symfony/routing/Loader/Configurator/RoutingConfigurator.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Loader\Configurator;
+
+use Symfony\Component\Routing\Loader\PhpFileLoader;
+use Symfony\Component\Routing\RouteCollection;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class RoutingConfigurator
+{
+    use Traits\AddTrait;
+
+    private $loader;
+    private $path;
+    private $file;
+
+    public function __construct(RouteCollection $collection, PhpFileLoader $loader, $path, $file)
+    {
+        $this->collection = $collection;
+        $this->loader = $loader;
+        $this->path = $path;
+        $this->file = $file;
+    }
+
+    /**
+     * @return ImportConfigurator
+     */
+    final public function import($resource, $type = null, $ignoreErrors = false)
+    {
+        $this->loader->setCurrentDir(dirname($this->path));
+        $subCollection = $this->loader->import($resource, $type, $ignoreErrors, $this->file);
+
+        return new ImportConfigurator($this->collection, $subCollection);
+    }
+
+    /**
+     * @return CollectionConfigurator
+     */
+    final public function collection($name = '')
+    {
+        return new CollectionConfigurator($this->collection, $name);
+    }
+}

vendor/symfony/routing/Loader/Configurator/Traits/AddTrait.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Loader\Configurator\Traits;
+
+use Symfony\Component\Routing\Loader\Configurator\RouteConfigurator;
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+trait AddTrait
+{
+    /**
+     * @var RouteCollection
+     */
+    private $collection;
+
+    private $name = '';
+
+    /**
+     * Adds a route.
+     *
+     * @param string $name
+     * @param string $path
+     *
+     * @return RouteConfigurator
+     */
+    final public function add($name, $path)
+    {
+        $this->collection->add($this->name.$name, $route = new Route($path));
+
+        return new RouteConfigurator($this->collection, $route);
+    }
+
+    /**
+     * Adds a route.
+     *
+     * @param string $name
+     * @param string $path
+     *
+     * @return RouteConfigurator
+     */
+    final public function __invoke($name, $path)
+    {
+        return $this->add($name, $path);
+    }
+}

vendor/symfony/routing/Loader/Configurator/Traits/RouteTrait.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Routing\Loader\Configurator\Traits;
+
+use Symfony\Component\Routing\Route;
+use Symfony\Component\Routing\RouteCollection;
+
+trait RouteTrait
+{
+    /**
+     * @var RouteCollection|Route
+     */
+    private $route;
+
+    /**
+     * Adds defaults.
+     *
+     * @return $this
+     */
+    final public function defaults(array $defaults)
+    {
+        $this->route->addDefaults($defaults);
+
+        return $this;
+    }
+
+    /**
+     * Adds requirements.
+     *
+     * @return $this
+     */
+    final public function requirements(array $requirements)
+    {
+        $this->route->addRequirements($requirements);
+
+        return $this;
+    }
+
+    /**
+     * Adds options.
+     *
+     * @return $this
+     */
+    final public function options(array $options)
+    {
+        $this->route->addOptions($options);
+
+        return $this;
+    }
+
+    /**
+     * Sets the condition.
+     *
+     * @param string $condition
+     *
+     * @return $this
+     */
+    final public function condition($condition)
+    {
+        $this->route->setCondition($condition);
+
+        return $this;
+    }
+
+    /**
+     * Sets the pattern for the host.
+     *
+     * @param string $pattern
+     *
+     * @return $this
+     */
+    final public function host($pattern)
+    {
+        $this->route->setHost($pattern);
+
+        return $this;
+    }
+
+    /**
+     * Sets the schemes (e.g. 'https') this route is restricted to.
+     * So an empty array means that any scheme is allowed.
+     *
+     * @param string[] $schemes
+     *
+     * @return $this
+     */
+    final public function schemes(array $schemes)
+    {
+        $this->route->setSchemes($schemes);
+
+        return $this;
+    }
+
+    /**
+     * Sets the HTTP methods (e.g. 'POST') this route is restricted to.
+     * So an empty array means that any method is allowed.
+     *
+     * @param string[] $methods
+     *
+     * @return $this
+     */
+    final public function methods(array $methods)
+    {
+        $this->route->setMethods($methods);
+
+        return $this;
+    }
+
+    /**
+     * Adds the "_controller" entry to defaults.
+     *
+     * @param callable|string $controller a callable or parseable pseudo-callable
+     *
+     * @return $this
+     */
+    final public function controller($controller)
+    {
+        $this->route->addDefaults(array('_controller' => $controller));
+
+        return $this;
+    }
+}