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Re:APIs that will transform the Web in 2013 by taitems on Wednesday November 28, 2012 @05:37PM (#4845184)
Even if what you're saying is true (which it isn't), it's completely optional. Don't want to use `let` scoping? Use `var` instead! etc.
Re:APIs that will transform the Web in 2013 by bcoates on Wednesday November 28, 2012 @09:30PM (#4845958)
Languages don't work that way. Anyone touching the language has to deal with the whole thing.

Tooling ES6 code is more complicated, learning the language is much more complicated (it was nicely minimalist compared to other mainstream languages). At least they mostly stuck to mucking with the syntax--saying they turned it into Java is crazy until they introduce Java's broken threading.