subscribe: simplify root field extraction (#3025)

graphql · Apr 4, 2021 · 954913b · 954913b
1 parent 3958158
commit 954913b
Showing 1 changed file with 2 additions and 5 deletions.
diff --git a/src/subscription/subscribe.js b/src/subscription/subscribe.js
@@ -203,11 +203,8 @@ async function executeSubscription(
     Object.create(null),
     Object.create(null),
   );
-  const responseNames = Object.keys(fields);
-  const responseName = responseNames[0];
-  const fieldNodes = fields[responseName];
-  const fieldNode = fieldNodes[0];
-  const fieldName = fieldNode.name.value;
+  const [responseName, fieldNodes] = Object.entries(fields)[0];
+  const fieldName = fieldNodes[0].name.value;
   const fieldDef = getFieldDef(schema, type, fieldName);
 
   if (!fieldDef) {