It's a stub of Couchbase PHP SDK.
No system requirements, pure code.
Recommended for docker environment projects and for those who don't have Couchbase PHP SDK (extension) locally installed.
Just add this library to your composer.json file (the best way is to add it as require-dev) or download it manually and place somewhere in your project dir. Your IDE should recognize it and... that's it! Don't forget to "lock" your version on a specific release.
composer require --dev nmapx/couchbase-stubs
Copyright 2016-2021 Couchbase Inc.
See full license here.