The unit test for anonymous classes failed on Node 15+. The test checks

that the anonymous wrapped class doesn't have a name attribute, since

it's anonymous. However, ES6 class spec says -- and Node 15+ mandates --

that these instead have a name of an empty string. This breaks our

assumption.
The assertion has been updated to check for either an empty name or a

missing attribute, covering all versions.

Unit tests pass on Node 14 through 21.