[SomeCallMeTim]

Crap. I've already banished Babel from my toolchain -- the Babel ES6 shim throws a warning in Firefox about modifying the prototype of an object, and from what I can tell that will kill or limit both V8 and SpiderMonkey optimizations from that point on.

Back to plan A: Don't use Lodash in client code unless I'm willing to use the whole thing (so that I can get the chaining optimizations, which cherry picking doesn't support anyway).

[jdd]

There's no hard requirement for babel-polyfill or babel-runtime.

Babel works great without shims in modern enviros (I don't use shims in my projects).