Guard against undefined scope

Fix: babel#803 Altough not sure if the root cause is on babel.
diervo · Feb 25, 2018 · 3770b21 · 3770b21
1 parent 8cf9f33
commit 3770b21
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/babel-plugin-transform-remove-undefined/src/index.js b/packages/babel-plugin-transform-remove-undefined/src/index.js
@@ -14,7 +14,7 @@ function isPureAndUndefined(
     return true;
   }
 
-  if (!rval.isPure()) {
+  if (!rval.scope || !rval.isPure()) {
     return false;
   }
   const evaluation = evaluate(rval, { tdz });