Support GraphQL v15

[kamilkisiela]

• Support GraphQL v15 apollographql/apollo-link#1263

[kamilkisiela]

@abernix

[abernix]

Thanks for opening this!

I've manually confirmed that keeping the graphql devDependencies at ^14.0.0 allows tests to pass (which are failing due to type errors, not because of runtime errors). Once apollographql/apollo-link#1263 lands, bumping this to ^15.0.0, it won't fail tests.

If you're okay with having tests failing on master, then go ahead with merging this and adjusting later, otherwise, I'd support only landing with just the peerDependencies bump. Either way, your call!

Worth noting that we've never published this package with yarn before, but I don't suspect that would present any problems that might surface as a breaking change. The perfectionist in me would say that the yarn.lock addition would probably be better compartmentalized into its own commit to preserve the sanctity of the commit history, but that's also non-blocking. (Fwiw, I happen to have a package-lock.json locally from the last v4.0.7 publish, but just realizing now that it's .gitignore'd so unsure if it's truly valuable in its current form.)

LGTM.

[kamilkisiela]

I pushed yarn.lock by mistake, it's no longer there.