It&#x27;s more expressive in that it&#x27;s more easily testable... To write testable code in C# you generally <i>need</i> to introduce complex classes, interfaces and IoC&#x2F;DI into a project.  JS allows you to work around this with generally less complexity of code.  For the most part node&#x2F;es6-style modules can be far more simple and easy to reason about than C# projects tend to be.<p>Don&#x27;t get me wrong here, I like a <i>LOT</i> about C# but expressiveness compared to JS doesn&#x27;t even come close, when you include the pending ES7 stuff via Babel.