Comment by brabel

Yes, this article is doing a bad job at explaining why you would want effects, and one of the main advantages is exactly that it becomes part of the type system, essentially coloring every single function with a set of effects it needs to be called. As the article used JavaScript it shows what untyped effects would look like, which in my opinion is awful. If you want to use algebraic effects today, I highly recommend Unison. If you’re on the JVM, Flix is doing major advances with effects!

https://www.unison-lang.org/

https://flix.dev/