apollographql/federation @apollo/federation-internals@2.9.3 on GitHub

fix: normalize field set selection sets (#3162)
FieldSet scalar represents a selection set without outer braces. This means that users could potentially specify some selections that could be normalized (i.e. eliminate duplicate field selections, hoist/collapse unnecessary inline fragments, etc). Previously we were using @requires field set selection AS-IS for edge conditions. With this change we will now normalize the FieldSet selections before using them as fetch node conditions.
Fixed missing referenced variables in the variableUsages field of fetch operations (#3166)
Query variables used in fetch operation should be listed in the variableUsages field. However, there was a bug where variables referenced by query-level directives could be missing in the field.
Fix fragment generation recursion logic to apply minification on all subselections. (#3158)
Fixed a bug that __typename with applied directives gets lost in fetch operations. (#3164)
The sibling typename optimization used by query planner simplifies operations by folding __typename selections into their sibling selections. However, that optimization does not account for directives or aliases. The bug was applying the optimization even if the __typename has directives on it, which caused the selection to lose its directives. Now, __typename with directives (or aliases) are excluded from the optimization.