How to update composer.json from Laravel controller

So I'm building a Laravel package and there is a special features that requires updating composer by adding a psr-4 namespace which points to a directory in Laravel base path.

I have tried this so far but doesn't work.

$loader = include(LIBRARY .'autoload.php'); $loader->add('Classes\Weather',CLASSES .'cronjobs/weather'); $weather = new Classes\Weather\WeatherSite();

via Chebli Mohamed