The move from VueJS v.2.6.12, which I've been using for some time now, to Vue 3.x doesn't seem seamless. I'm looking at some of the major differences between the versions and thinking they might require more than an off-the-cuff decision to upgrade (hint: there's mention of things like third-party tool compatability, for example). So, maybe this next project 3.x...or maybe a new approach I've just started exploring...the "CLF approach". Class-Listener-Function