Support for Relay v19

[sjbarag]

Heyyyy @morrys! I saw that Relay v19 was released late last week. Do you have a rough idea of when relay-hooks might update to list relay-runtime@^19.0.0 as a valid peer dependency?

I tried to do the upgrade myself but saw some failed tests that I haven't quite dug into yet. For instance, this patch fixes most of __tests__/useRefetchableFragment-test.tsx but still leaves 3 failing tests:

diff --git a/__tests__/useRefetchableFragment-test.tsx b/__tests__/useRefetchableFragment-test.tsx
index 669087b..b4fd3fe 100644
--- a/__tests__/useRefetchableFragment-test.tsx
+++ b/__tests__/useRefetchableFragment-test.tsx
@@ -244,11 +244,11 @@ describe('useRefetchableFragmentNode', () => {
         variablesNestedFragment = { id: '<feedbackid>', scale: 16 };
 
         invariant(
-            areEqual(gqlFragment.metadata?.refetch?.operation.default, gqlRefetchQuery),
+            areEqual(gqlFragment.metadata?.refetch?.operation, gqlRefetchQuery),
             'useRefetchableFragment-test: Expected refetchable fragment metadata to contain operation.',
         );
         invariant(
-            areEqual(gqlFragmentWithArgs.metadata?.refetch?.operation.default, gqlRefetchQueryWithArgs),
+            areEqual(gqlFragmentWithArgs.metadata?.refetch?.operation, gqlRefetchQueryWithArgs),
             'useRefetchableFragment-test: Expected refetchable fragment metadata to contain operation.',
         );
 
@@ -3258,7 +3258,7 @@ describe('useRefetchableFragmentNode', () => {
                     require('./__generated__/useRefetchableFragmentTest3FragmentRefetchQuery.graphql').default;
                 variables = { nodeID: '1', scale: 16 };
                 invariant(
-                    areEqual(gqlFragment.metadata?.refetch?.operation.default, gqlRefetchQuery),
+                    areEqual(gqlFragment.metadata?.refetch?.operation, gqlRefetchQuery),
                     'useRefetchableFragment-test: Expected refetchable fragment metadata to contain operation.',
                 );

[sjbarag]

Actually, I managed to get the upgrade working over in #285, so I'm going to close this discussion in favor a PR 🙂