

Wow, prejudiced much. The JS ecosystem evolved a lot over the year, and polyfills for most environment are next to non existant. The worst environment to me (react-native) do heavily use them, but they’re built-in anyway.
Also, about stuff being slow when made in JS… people that make slow clusterfuck in JS would also make slow clusterfuck in other languages. React is guilty of that too, trying to re-implement core language features OVER the language itself, and that is stupid. Still, as with every language, it is possible to use it decently. You’ll never get to the point of raw optimized assembly performance, but even higher level scripting language can leverage JIT compilation and work well on any modern (<10 years) computer. Taking as an example the worst developers out there using the worst way to do things is not exactly a good benchmark.
well, yeah. Even the old 3-2-1 backup policy is against that.