* refactor(eslint): Added no-unsed-vars, env specific .eslintrc's for buildin & hot
* This change allows for buildin to now be part of the lint test by addition of an extra .eslintrc file which extends existing but sets es6 to false
* Turned on no-unused-vars for eslint, and then removed all warnings from turning that feature on
* Was getting notified of errors in "quote" property in eslintrc, so changed to correct value from error to 2.
* beautify
* swap invalid eslint config val
Fixes 'cannot call method then on undefined' error when using HMR with a config
whose target is "webworker".
Probably should have happened with 2245c4acca
The way that the hot loader is included in a bundle breaks in Java 8's
Nashorn engine, because of a missing semicolon. This change introduces
a placeholder value that can be correctly substituted when building
a bundle, but is otherwise inert.
Note that I don't particularly like this change, so if there's a better
fix, I'd like to hear about it.