Comment by otakucode

>It turns out, we can call resume with asynchronously from our effect handler without making any changes to getName or makeFriends:

This sounds like a terrible idea. Especially given the nature of Javascript, this basically would mean that you would have to write every single bit of code to be re-entrant. What if you 'perform' and then the 'resume' doesn't happen until every single assumption made about the entire program state for the entirety of the function in which the perform occurs has been invalidated? After doing a 'perform', you would have to operate under the presumption that nothing done in the first portion of the function has any relevance any longer, no? The enumerateFiles example later in the article is an even better example. It performs in multiple places, but carries on like it's a normal function, not considering that at each of those performs, the entire state of the program could be changed, and none of the conditions established prior to those lines can be relied upon to still hold.