listify

Take a look at the lockfile change in https://github.com/whatwg/participate.whatwg.org/pull/104. Going from v1.0.0 to v1.0.1 added the following dependencies to my project: define-properties es-abstract es-to-primitive function-bind has has-symbols is-callable is-date-object is-regex is-symbol object-inspect object-keys object.assign string.prototype.trim string.prototype.trimend string.prototype.trimleft string.prototype.trimright string.prototype.trimstart This isn't really acceptable for a listification package. Would it be possible to revert whatever caused this? The changelog is rather noisy so I can't figure out what it was...

This is just silly, but maybe worth adding for fun: As a lover of Oxford commas (AKA serial commas), I personally wouldn't use this feature, but others might.

When reading your example I noticed that you were inserting a separator after the penultimate element of the array before the lastWord which, in my opinion, isn't appropriate for use in a sentence. I changed it in the following way. Behavior before fix: Behavior after fix: I also added a validation test that asserts two items with finalWord.