sindresorhus/array-union — pull request #1 by cthrax (2014-11-18 00:48:09+00:00)
Title: Up version of array-uniq

With NPM version 1.4.3, the resolved version of array-uniq was 1.0.0, which has a broken implementation of Set, which produces an empty array. When installing array-unique the correct version was resolved, but I'm thinking maybe the "^" was broken or something. At any rate, this ups the version to hopefully save others from my pain.