assert change asynchronously

[timruffles]

as in [#339] there are two plugins which provide asynchronous change assertions - obviously important for Javascript.

I think it'd be good to integrate one. chai-change is callback based and supports assert and expect. chai-change is promise based and I could only see expect support in the docs.

[keithamus]

Thanks for the issue @timruffles.

I think the essence of what you're saying is right, but maybe not the full idea...

I think Chai should work more towards supporting primitives, and popular patterns against these - and by this I mean, I would like to see Chai support Promises as a native part of the language, and the callback pattern as a popular primitive pattern. Personally I use chai-as-promised pretty much all of the time, and have extended a hand to @domenic to fold Chai-As-Promised into the chai org (chaijs/chai-as-promised#105 (comment)), with the potential eventuality of supporting it wholesale in Chai.

I have yet to see a really great way to handle callbacks in a similar way, but I'd definitely be excited to see PRs about that.

So ultimately, if Chai supported both Promises and callbacks, the logical extension of this would be to use the same mechanisms to provide useful assertions such as .change.

I would personally rather play the long game on this - while letting plugins like your wonderful chai-change to prop us up in the interim. Make sense?

[vieiralucas]

Hello @timruffles, I'll be closing this for inactivity

I think this discussion may continue in #605 or #882
If you strongly disagree, please let me know

Thanks