Yes, it is.
If you’ve installed the plugin, you may have noticed that I have not been keeping the ‘tested up to’ version numbers current, and WooCommerce will tell you that it is not tested with 4.2.2. I apologize for that, and I am pushing out a new build right now to correct it.
Here are the version numbers that WooCommerce lists on their status page for my development and test servers. I hope that answers your question.
WC Version: 4.2.2
REST API Version: ? 1.0.8
WC Blocks Version: ? 2.8.0
Action Scheduler Version: ? 3.1.6
WC Admin Version: ? 1.2.4
WP Version: 5.4.2
Server Info: Apache/2.4.29 (Ubuntu)
PHP Version: 7.2.24-0ubuntu0.18.04.6
cURL Version: 7.58.0
OpenSSL/1.1.1
MySQL Version: 5.7.30-0ubuntu0.18.04.1
WC Database Version: 4.2.2