[Bug]: Undefined global variable $_composer_bin_dir

[eyedroot]

What Happened

The output of running Pest through PHPStorm appears as follows:

/opt/homebrew/bin/php /Users/byzz/Projects/project_name/vendor/pestphp/pest/bin/pest --teamcity --parallel --processes=10 --configuration /Users/byzz/Projects/project_name/phpunit.xml /Users/byzz/Projects/project_name/tests
**PHP Warning:  Undefined global variable $_composer_bin_dir in /Users/byzz/Projects/project_name/vendor/pestphp/pest-plugin/src/Loader.php on line 61**
**PHP Warning:  Undefined global variable $_composer_bin_dir in /Users/byzz/Projects/project_name/vendor/pestphp/pest-plugin/src/Loader.php on line 61**

   INFO  Warning: Undefined global variable $_composer_bin_dir in /Users/byzz/Projects/project_name/vendor/pestphp/pest-plugin/src/Loader.php on line 61

PHPUnit 10.3.2 by Sebastian Bergmann and contributors.

**Unknown option "--parallel".**
PHP Warning:  Undefined global variable $_composer_bin_dir in /Users/byzz/Projects/project_name/vendor/pestphp/pest-plugin/src/Loader.php on line 61

Process finished with exit code 2

The issue is caused by the absence of the $GLOBAL['_composer_bin_dir'] variable defined in the file ./vendor/pestphp/pest-plugin/src/Loader.php:61, which prevents the proper detection of the pest-plugins.json file.

There have been no recent changes, and this problem seems to have emerged suddenly after updating to the pestphp:^2.16.0 version.

It appears that the issue is related to composer configuration in the local environment. To ensure that there are no such issues, I'm reaching out with this inquiry.

After making arbitrary modifications to the code as shown below, it executed without any issues. (Temporary)

    private static function getPluginInstances(): array
    {
        if (! self::$loaded) {
//            $cachedPlugins = sprintf('%s/../pest-plugins.json', $GLOBALS['_composer_bin_dir']);
            $cachedPlugins = __DIR__ . '/../../../pest-plugins.json';
            $container = Container::getInstance();

            if (! file_exists($cachedPlugins)) {
                return [];
            }

How to Reproduce

update to pestphp/pest:^2.16.0

Sample Repository

No response

Pest Version

2.16.0

PHP Version

8.2.9

Operation System

macOS

Notes

$ composer global config bin-dir --absolute

byzz@byzzui-Mac-Studio ~/project (develop) $ composer global config bin-dir --absolute

Changed current directory to /Users/byzz/.composer
/Users/byzz/.composer/vendor/bin

[owenvoke]

What Composer version are you using? 👀 I definitely think there should have been a fallback to vendor (such as $GLOBALS['_composer_bin_dir'] ?? __DIR__ . '/../vendor/bin')

For reference, if we are going to be using that on its own, we should probably require:
"composer-runtime-api": "^2.2.2"

See: https://getcomposer.org/doc/articles/vendor-binaries.md#finding-the-composer-bin-dir-from-a-binary

---

This PR should resolve the issue. 👍🏻 pestphp/pest-plugin#17