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.changeset/orange-pillows-decide.md

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+---
+'@graphql-codegen/visitor-plugin-common': patch
+'@graphql-codegen/typescript-resolvers': patch
+---
+
+Fix generateInternalResolversIfNeeded.\_\_resolveReference making the resolver required
+
+`__resolveReference`'s default behaviour when not declared is to pass the ref to subsequent resolvers i.e. becoming the `parent`. So, it means we don't have to make this resolver required.
+
+This patch makes `__resolveReference` optional when `generateInternalResolversIfNeeded.__resolveReference` is set to true.