JavaScript programmers like to use words like, âevent-loopâ, ânon-blockingâ, âcallbackâ, âasynchronousâ, âsingle-threadedâ and âconcurrencyâ. We say things like âdonât block the event loopâ, âmake sure your code runs at 60 frames-per-secondâ, âwell of course, it wonât work, that function is an asynchronous callback!â If youâre anything like me, you nod and agree, as if itâs all obvious, even thoug

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