I agree, this is one of Elm&#x27;s main draws.  PureScript has a library for this style of FRP (<a href="https:&#x2F;&#x2F;github.com&#x2F;bodil&#x2F;purescript-signal" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;bodil&#x2F;purescript-signal</a>).  From the documentation, Elm signals are like a process network (<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kahn_process_networks" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kahn_process_networks</a>).<p>In my experience I&#x27;ve been able to model any conceivable interactions with a website using this model.