re-export collectFields

[PabloSzx]

No description provided.

[ardatan]

Actually it would be nice to export collectFields directly from index file for the future.

[saihaj]

Actually it would be nice to export collectFields directly from index file for the future.

That would be better. One more breaking change but I think we should do this now

[ardatan]

@saihaj If we both export collectFields from execute and index file, that won't be a breaking change, no?

[saihaj]

Yep 👍🏼

[PabloSzx]

Yep 👍🏼

done 👍

[IvanGoncharov]

@PabloSzx Thanks for PR collectFields was internal function.
So v15 and v16 have different prototypes (last 2 arguments have different types) so they are incompatible anyway even if we export them.
I'm totally ok with making this function part of public API but before that, I need to do some changes to it.

[PabloSzx]

@ardatan who is the lead maintainer of graphql-tools should be more interested in that comment

[robrichard]

Calling out here that the experimental defer/stream branch also changes the api of collectFields.

https://github.com/graphql/graphql-js/pull/2839/files#diff-b17f02a116457aa7749e04b3f306eba462f95979d4f76c313a6073fa201e4fe4R52

I think we need to carefully consider the api of this function before making it external, so that we can support defer/stream without introducing additional breaking changes.