Problem with eslint with listbox examples and unrelated regression tests failing in GitHub

The listbox examples have been fixed and are passing their regression tests, at least locally, their are a number of regression tests that are failing for other examples for some reason.  The files for the other examples have not been changed.

An eslint error exists apparently because to the Listbox and Toolbar classes being defined in a separate JS file.

https://github.com/w3c/aria-practices/pull/2622

The listbox examples share the same listbox.js file and I am getting the following eslint errors:

Users/jongunderson/Sites/aria-practices/content/patterns/listbox/examples/js/listbox-rearrangeable.js
  19:35  error  'Listbox' is not defined  no-undef
  22:37  error  'Listbox' is not defined  no-undef
  25:9   error  'Toolbar' is not defined  no-undef
  72:35  error  'Listbox' is not defined  no-undef
  75:37  error  'Listbox' is not defined  no-undef