Nit: avoid unnecessary call

babel · Nov 4, 2019 · 14a6afa · 14a6afa
1 parent 65c0f1f
commit 14a6afa
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/packages/babel-helper-module-transforms/src/rewrite-live-references.js b/packages/babel-helper-module-transforms/src/rewrite-live-references.js
@@ -265,10 +265,10 @@ const rewriteReferencesVisitor = {
         }
       } else {
         const ids = left.getOuterBindingIdentifiers();
-        const programScopeIds = Object.keys(ids).filter(
-          localName =>
-            scope.getBinding(localName) === path.scope.getBinding(localName),
-        );
+        const programScopeIds = Object.keys(ids).filter(localName => {
+          const binding = scope.getBinding(localName);
+          return binding && binding === path.scope.getBinding(localName);
+        });
         const id = programScopeIds.find(localName => imported.has(localName));
 
         if (id) {