[p2hari]

Surprising no one mentioned here about https://github.com/staltz/xstream Creaed by Andre Staltz, the creator of cycleJS and other interesting reactive libraries in JS. xstream is powerful and also much smaller in size. Give that a try.

[fabiospampinato]

Much smaller than ~800B? It looks like ~5kb min+gzip according to bundlephobia (https://bundlephobia.com/package/xstream@11.14.0).