he/him 
very first ES6 feature I try (subclassing Date) using @babeljs fails. Not much help looking at https://babeljs.io/docs/learn-es6/#subclassable-built-ins …. Will try traceur.
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@sebmck You’re welcome. I should have complained constructively with a PR or an issue, sorry about that. And thanks for babel!Thanks. Twitter will use this to make your timeline better. UndoUndo
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