Yeah, I have read that too. That is one of the best sites that I have ever came across explains so neat the FP concepts like Monad and other stuffs.<p>Here is the actual course of FP from the same author: <a href="https:&#x2F;&#x2F;frontendmasters.com&#x2F;courses&#x2F;functional-javascript&#x2F;" rel="nofollow">https:&#x2F;&#x2F;frontendmasters.com&#x2F;courses&#x2F;functional-javascript&#x2F;</a>