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Exciting stuff. It feels really weird for someone to write a blog in which they discover that 95% of websites use minified JS though. I guess it's nice to see Microsoft making some progress but you have to wonder what's going on over there if they seem to clueless to the state of the modern web.

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My understanding is that the same JavaScript code minified by different minifiers will produce different performance results across any browser. This is because minifiers often introduce code patterns that are very different than the JavaScript code that the devs write. The point being made is not about being non-aware of the web, but more about ensuring the web runs faster across different code patterns that are encountered by the JIT compiler while running the web.

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