Thank you for your answer. I just want to add a little thing to the first point.

> Why the single quotes around function names?

In this case I use quotes to prevent name mangling. I have to be sure that the uglify plugin in webpack does not mangle the names of that object because I'll call it from C++ in this way:

window['asmDomHelpers']['domApi']['createComment'](...)

Also, for the same reason, here I'm using this notation instead of this one:

window.asmDomHelpers.domApi.createComment(...)

to let know the closure compiler that I don't want name mangling.

Without quotes these two different compile processes might cause some problems