diff --git a/packages/babel-generator/src/node/index.js b/packages/babel-generator/src/node/index.js
index 7292f83a51..394e63b5cb 100644
--- a/packages/babel-generator/src/node/index.js
+++ b/packages/babel-generator/src/node/index.js
@@ -75,7 +75,11 @@ export function needsWhitespace(node, parent, type) {
     }
   }
 
-  return (linesInfo && linesInfo[type]) || 0;
+  if (typeof linesInfo === "object" && linesInfo !== null) {
+    return linesInfo[type] || 0;
+  }
+
+  return 0;
 }
 
 export function needsWhitespaceBefore(node, parent) {