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Re:6to5 is renamed to Babel by __david__ on Sunday February 15, 2015 @02:03PM (#9053607)
I've used Traceur before, how does this project compare? (With an implied "why duplicate the effort?")

Oh, duh, I found it: https://babeljs.io/docs/compare/

Supports more features than Traceur and doesn't require a runtime library. Ok, that's a clear improvement :-)

Re:6to5 is renamed to Babel by timmfin on Sunday February 15, 2015 @04:28PM (#9054203)
And don't underestimate the value of "readable" transpiled code. It goes a long way, even beyond debugging (and no, source maps are not a silver bullet).