[DEADB17]

Most of the complexity comes from state management and tracking data dependencies, not dom manipulation.

If you like keeping things light this library gives you a lot of bang for the buck:

https://github.com/MaiaVictor/PureState

It's similar to how pub/sub works but it does the topological sort that prevents data with diamond shaped dependencies from being triggered twice, in less than 500bytes minified (before zipping).