nextcloud-server/vendor-bin/cs-fixer/composer.json

{
	"config": {
		"platform": {
			"php": "7.3"
		}
	},
    "require": {
        "friendsofphp/php-cs-fixer": "2.19.1",
        "nextcloud/coding-standard": "^0.5.0"
    }
}