createEffect handler with several arguments

[Aleksey-Danchin]

Hi, guys! For what reason the handler of createEffect has only one argument? I understand the philosophy of payload arg, but why use handler with several arguments it's bad idea?

https://share.effector.dev/DXX3HeuG

[pxbuffer]

Because it's not extendable and testable. The more args than more painful to test and refactor. Highly recommend to look at this

[zerobias]

Second argument doesn’t make sense in reactive dataflow. What does it mean to forward to effect with pair of arguments? You need to invent multi-value return at first