Fix for #261

paulmillr · Jun 11, 2014 · 18434be · 18434be
1 parent 4c2b22c
commit 18434be
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/es6-shim.js b/es6-shim.js
@@ -589,8 +589,8 @@
           } else {
             value = list[i];
           }
-          if (mapFn !== undefined) {
-            result[i] = thisArg ? mapFn.call(thisArg, value) : mapFn(value);
+          if (mapFn) {
+            result[i] = thisArg ? mapFn.call(thisArg, value, i) : mapFn(value, i);
           } else {
             result[i] = value;
           }