diffWords is not detecting a deleted space at the end of text.

[firststeven]

Any ideas?

Can anyone else reproduce this issue?

V5.0

[ExplodingCabbage]

This is expected. If you want to catch whitespace differences, you need diffWordsWithSpace. Per the README:

Diff.diffWords(oldStr, newStr[, options]) - diffs two blocks of text, comparing word by word, ignoring whitespace.
...
Diff.diffWordsWithSpace(oldStr, newStr[, options]) - diffs two blocks of text, comparing word by word, treating whitespace as significant.

(I was surprised to discover it too.)