i strongly suggest JS user to learn and use mout. A lightweight & simple alternative to lodash/underscore (and a spiritual successor of mootools)
Lodash full is 24kb. Mout is 450kb...
Not light weight at all. The advantage is that its modular so your bundles would only include the libraries you require. Oh wait lodash does that. So Lodash is a more lightweight alternative to mout...
After "smooshgate" I don't think that's a plus point.