Do Temporary Hit Points count for determining whether a creature is affected by Sleep or Power Word Kill?

@JeremyECrawford I did my best to search, but couldn’t find anything. Do Temporary Hit Points count for purposes of determining whether or not a creature is affected by Sleep or Power Word Kill? #DnD

— John Ryan Benjamin Jusayan (@jrbj) November 28, 2017

Hit points and temporary hit points are never added together. #DnD https://t.co/1KDzeKV8mf

— Jeremy Crawford (@JeremyECrawford) November 28, 2017