"use strict" at the top of the output file breaks any non-strict code

[davidgiven]

...such as web-animations-next.min.js, which is used by Polymer's Neon. The minifier it's been built with is generating non-strict code (specifically, it's assuming that 'this' points at window by default):

web-animations/web-animations-next#402

This specific case is obviously a configuration issue at web-animations' end, but there's plenty of non-strict code floating around the net and putting "use strict" at the top of the output file means that it can't be used by vulcanize. There should be an option to disable this.

[davidgiven]

Oops. Sorry, my mistake --- the line's been added by babelify, not vulcanize (I'm running babelify after vulcanize). Nothing to do with Polymer. Apologies for the noise.