Essentially object proxies. When you invoke a property getter in tracked contexts (like DOM element construction), a dependency is registered for that object p

Essentially object proxies. When you invoke a property getter in tracked contexts (like DOM element construction), a dependency is registered for that object property. When you invoke the corresponding setter, the update function for the list of dependencies are notified. That's the idea, in a nutshell. I'm definitely not the first one to come up with this idea, but I hadn't found another UI framework that worked exactly like how I wanted. Solid is kind of close, but not it. Vue has some of this as well, but it's a bit more kitchen-sink in its scope.