Handle @include and @skip directives about apollo-ios

[martijnwalraven]

I just merged a fix for this to apollo-codegen, so updating to 0.9.3 should solve your issue.

It is not a complete solution yet because it only works when fields have skip or include directives specified, not if you make an entire fragment conditional.

That means this still doesn't work:

query UserQuery($includePhotos: Boolean = true) {
  user {
    ...ProfileFragment @include(if: $includePhotos)
  }
}