We've had great results from our custom built non-pure reactive system (which predates React by a couple of years). The idea is to have an Observable object th

We've had great results from our custom built non-pure reactive system (which predates React by a couple of years). The idea is to have an Observable object that can store arbitrary trees of data (each itself an Observable). UI drawing is generally split into a function call for each DOM element that has children. These functions are executed such that they track the use of observables and will be rerun when they change. I've more recently, after having suffered React and friends, started creating an Open Source implementation of the pattern we used. Currently, it's mostly still lacking in documentation and marketing, and that's unlikely to change if I'm honest. But this should give you an impression if you're interested: https://github.com/vanviegen/aberdeen/blob/master/examples/tic-tac-toe/tic-tac-toe.js https://github.com/vanviegen/aberdeen/blob/master/examples/t... Curious to know your thoughts about this being an effective non-pure reactive system.