Version 3.3.0 is available upstream. Please consider updating!
It seems that version 3.3.0 is available upstream, while the latest version in the Gentoo tree is 3.2.1. You think this warning is false? Read more about it here.
This library consists of efficient conversion routines that have
been extracted from the V8 JavaScript engine. The code has been
refactored and improved so that it can be used more easily in other
projects.