What alternatives to JavaScript are there for browser-side scripting? Even things like CoffeeScript and Dart only translate into JavaScript and still use its runtime.

We just have to continue to improve the tooling.

What he said in his first sentence is false. Thus, there is no alternative.

It's a quite strange way of writing a sarcastic comment, but it does agree with you.

The post in question specifically talks about catching client side errors in browsers, for which there isn't any real alternative to JS.

The lack of alternatives is the precise and central point of my comment actually.

> What I just said in the previous sentence is (NaN === NaN).

I assume by that you mean as per an IEEE specification.