React moved some parts from Uglify to Closure recently. They're only compiling using "simple" ("none" and "advanced" are the other options), but they're still s

React moved some parts from Uglify to Closure recently. They're only compiling using "simple" ("none" and "advanced" are the other options), but they're still seeing benefits: https://github.com/facebook/react/pull/10236 https://github.com/facebook/react/pull/10236