Earlier quoted context omitted.
It may be worth mentioning that Vue is an entire framework with a crapload of features and caveats and whatnot and thus not exactly an equivalent of an especially flexible PJAX library which is the best definition I can come up with when defining Intercooler
Vue is not a framework, at least not in it's simplest form - drop in UI library. I agree that Vue does much more than Intercooler and in theory, it could be seen as an overkill. But in reality, a developer will probably use it in conjunction with jQuery and then he might be better off replacing these two with Vue.js
The Progressive
JavaScript Framework
I mean, regardless of anecdotal specific usage, vue is a framework. And a nice one too! Just entirely too much for something that can be fulfilled by a simple pjax tool