> Doesn't the existence of countless solutions … imply that it's not a solved problem? Is this a serious question? It seems like you're letting a bit of bias

> Doesn't the existence of countless solutions … imply that it's not a solved problem? Is this a serious question? It seems like you're letting a bit of bias against the JS ecosystem invade your thought process here. There are countless solutions because they range from generic, such as a simple routing helper, to deeply integrated, such as react-router. > rather than relying on built-in browser behavior You mean the built-in behavior of navigating away from the current page? The single page application?