framework/extensions/pusher/composer.json

{
    "autoload": {
        "psr-4": {
            "Flarum\\Pusher\\": "src/"
        }
    },
    "require": {
        "pusher/pusher-php-server": "^2.2"
    },
    "scripts": {
        "style": "phpcs --standard=PSR2 -np src"
    }
}