[geokon]

Oh sorry, I kind of meant it the other way around. You start with biff.graph and you'd swap in Pathom if the featureset or performance wasn't adequate. It makes sense that since you support a subset that it doesn't work the other way around! It might make sense to reinvent the wheel if there is a clear gain - but if there isn't any big innovation going on in the library interface, it's generally nice to keep the same interface if it's easy enough to do - but that's just my opinion haha

And yeah, now that I have a larger application with Pathom.. I should retry Viz too :))

And that's very cool you're taking error seriously. Sorry, I missed it when I looked at the rep the first time! Thanks for your help with Pathom a few months back (kxygk on Github)

[jacobobryant]

ah got it. yeah, in that case you can write a biff -> pathom resolver shim that works for everything. Again though the main thing is just the fact that they have two completely different query engines and aren't guaranteed to give the same results. e.g. off the top of my head I can think of a contrived scenario where biff.graph might not be able to resolve something but Pathom can since it can "look ahead" in the query planning step.

Maybe that kind of situation is fine and the question is really just if there are queries that biff.graph can handle which Pathom can't. If your resolvers are written correctly maybe not? But there have definitely been times with Pathom where I did something wrong that threw off the query planner in ways I didn't expect.

In any case, if I end up wanting to support migrating easily between the two as a core feature, I'd definitely want to e.g. do a bunch of generative tests to find out what kinds of queries end up with different results. Until then, a downside of supporting Pathom resolvers without a shim is that it might give people the false impression that biff.graph is a drop-in replacement for Pathom or vice-versa.

So far though the main target audience I have for biff.graph is people (biff users) who have never even heard of Pathom before, so interchangeability hasn't been a top concern. Though if many people start using biff 2 and then eventually some of the start wanting to migrate to pathom, I'd be down to explore that area.

And haha yeah nice to bump into you again--I think I remembered your username from reddit, assuming it's geokon there.

[geokon]

that I understand. providing that compatibility guarantee is extra work for you

It's always nice talking to you about these things. Thanks again :)