"You called setState() on an unmounted component."

[drewvolz]

Loading a module of the app and then pressing back before the data loads causes this warning.

[hawkrives]

Whee.

I'm honestly not sure how to deal with this. Just putting an isMounted check would still be subject to race conditions, and you can't cancel a promise.

I'll do some research today.

[hawkrives]

btw this is why an isMounted check isn't enough: https://facebook.github.io/react/blog/2015/12/16/ismounted-antipattern.html

[hawkrives]

this is probably what I'll end up using – bluebird's promise cancellation and some code to cancel promises in componentWillUnmount – http://bluebirdjs.com/docs/api/cancellation.html

I'll take a stab at this after the SIS Oauth stuff

[hawkrives]

facebook/react#2787 (comment)

[hawkrives]

I'd like to close this – it's not really actionable, as stands, and I think that as we slowly refactor things to take advantage of hooks we will cause this less often.

[drewvolz]

I still see this issue, and I think we could solve it.

[drewvolz]

But alright. Closing.