Backdrop coder is a packagist package that provides a library that phpcs uses to check your code against the standards defined on Backdrop CMS API site. To download and use the library is very easy and I'll show you how! Adhering to objective coding standards is a great way to keep your application lean and healthy. It is also an easy way to get started with Continuous Integration (CI) if you and your team have been eyeing that but unable to make the leap.
Install the Backdrop Coder Library
To install the backdrop/coder library we will use composer in my case I'm using Lando which installs composer for us on all PHP applications.
lando composer require backdrop/coder
The result of this command is that it downloads the backdrop/coder library and puts it into the vendor directory.