> What we're doing is make it unnecessary to add error handlers everywhere and still get caught by surprising failure modes. If the zone catches an error it cleans up (closes resources, cancel operations when that makes sense) and then routes the error to the zone's result callback so you can handle it in once place.
I'm really unclear on how the zone library is doing the magical interception of errors. In the curl example you don't put error handlers on things. But clearly something must be. Does a library (say, one that came from npm and not the core library) have to be zone-aware to function correctly with zones? What does using zones mixed with libraries that aren't zone-aware look like? How much complexity does it add to the library to make it zone aware?
