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Modern JavaScript frameworks are all about reactivity. Change your application's state, and the view updates automatically. But there's a catch — tracking state changes at runtime adds overhead that eats into your bundle size and performance budgets. In this talk, we'll discover an alternative approach: moving reactivity into the language itself. Your apps have never been smaller or faster than they're about to become. Slides: YGLF 2019: Code Camp Blog - Rich Harris
