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Re:V8 Release 5.1 by fenomas on Saturday April 23, 2016 @10:50PM (#11558354)
Does anyone know if any ES2015 features are optimized yet?

When last I checked, just having an unused `let` statement in a function made V8 bail out to the slow compiler, making ES2015 off-limits for anything nontrivial. But that was some months ago.

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