Modules were removed from the kangax test suite for reasons explained here: <a href="https:&#x2F;&#x2F;github.com&#x2F;kangax&#x2F;compat-table&#x2F;issues&#x2F;316" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;kangax&#x2F;compat-table&#x2F;issues&#x2F;316</a>