WIP - add extractor, generate snippet_data

node_modules/graphql/validation/rules/KnownFragmentNames.mjs

@@ -0,0 +1,23 @@
+import { GraphQLError } from '../../error/GraphQLError';
+export function unknownFragmentMessage(fragName) {
+  return "Unknown fragment \"".concat(fragName, "\".");
+}
+/**
+ * Known fragment names
+ *
+ * A GraphQL document is only valid if all `...Fragment` fragment spreads refer
+ * to fragments defined in the same document.
+ */
+
+export function KnownFragmentNames(context) {
+  return {
+    FragmentSpread: function FragmentSpread(node) {
+      var fragmentName = node.name.value;
+      var fragment = context.getFragment(fragmentName);
+
+      if (!fragment) {
+        context.reportError(new GraphQLError(unknownFragmentMessage(fragmentName), node.name));
+      }
+    }
+  };
+}