Deploy 6203e2a to NPM branch

Travis CI · Travis CI · commit 31541ef3638e · 2018-10-27T01:18:38.000Z
diff --git a/dist/immutable.es.js b/dist/immutable.es.js
@@ -1882,8 +1882,8 @@ function coerceKeyPath(keyPath) {
 function isPlainObj(value) {
   return (
     value &&
-    ((value.constructor && value.constructor.name === 'Object') ||
-      value.constructor === undefined)
+    (typeof value.constructor !== 'function' ||
+      value.constructor.name === 'Object')
   );
 }
 
diff --git a/dist/immutable.js b/dist/immutable.js
@@ -1888,8 +1888,8 @@
   function isPlainObj(value) {
     return (
       value &&
-      ((value.constructor && value.constructor.name === 'Object') ||
-        value.constructor === undefined)
+      (typeof value.constructor !== 'function' ||
+        value.constructor.name === 'Object')
     );
   }
 
diff --git a/dist/immutable.min.js b/dist/immutable.min.js
