feat(visitResult): ignore if field not present in visited object

ardatan · Feb 24, 2022 · baf807b · baf807b · vercel · Feb 24, 2022
1 parent 66ffb1a
commit baf807b
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diff --git a/.changeset/healthy-rules-knock.md b/.changeset/healthy-rules-knock.md
@@ -0,0 +1,5 @@
+---
+'@graphql-tools/utils': patch
+---
+
+feat(visitResult): ignore if field not present in visited object
diff --git a/packages/utils/src/visitResult.ts b/packages/utils/src/visitResult.ts
@@ -222,7 +222,7 @@ function visitObjectValue(
 
   for (const [responseKey, subFieldNodes] of fieldNodeMap) {
     const fieldName = subFieldNodes[0].name.value;
-    const fieldType = fieldName === '__typename' ? TypeNameMetaFieldDef.type : fieldMap[fieldName].type;
+    const fieldType = fieldName === '__typename' ? TypeNameMetaFieldDef.type : fieldMap[fieldName]?.type;
 
     const newPathIndex = pathIndex + 1;