Fixing isIterable checks

Author: mattpodwysocki

dist/rx.all.compat.js

@@ -224,12 +224,12 @@
   var doneEnumerator = Rx.doneEnumerator = { done: true, value: undefined };
 
   var isIterable = Rx.helpers.isIterable = function (o) {
-    return o[$iterator$] !== undefined;
-  }
+    return o && o[$iterator$] !== undefined;
+  };
 
   var isArrayLike = Rx.helpers.isArrayLike = function (o) {
     return o && o.length !== undefined;
-  }
+  };
 
   Rx.helpers.iterator = $iterator$;
 

dist/rx.all.compat.map

@@ -222,12 +222,12 @@
   var doneEnumerator = Rx.doneEnumerator = { done: true, value: undefined };
 
   var isIterable = Rx.helpers.isIterable = function (o) {
-    return o[$iterator$] !== undefined;
-  }
+    return o && o[$iterator$] !== undefined;
+  };
 
   var isArrayLike = Rx.helpers.isArrayLike = function (o) {
     return o && o.length !== undefined;
-  }
+  };
 
   Rx.helpers.iterator = $iterator$;
 

dist/rx.all.compat.min.js

@@ -224,12 +224,12 @@
   var doneEnumerator = Rx.doneEnumerator = { done: true, value: undefined };
 
   var isIterable = Rx.helpers.isIterable = function (o) {
-    return o[$iterator$] !== undefined;
-  }
+    return o && o[$iterator$] !== undefined;
+  };
 
   var isArrayLike = Rx.helpers.isArrayLike = function (o) {
     return o && o.length !== undefined;
-  }
+  };
 
   Rx.helpers.iterator = $iterator$;
 

dist/rx.all.js

@@ -93,12 +93,12 @@
   var doneEnumerator = Rx.doneEnumerator = { done: true, value: undefined };
 
   var isIterable = Rx.helpers.isIterable = function (o) {
-    return o[$iterator$] !== undefined;
-  }
+    return o && o[$iterator$] !== undefined;
+  };
 
   var isArrayLike = Rx.helpers.isArrayLike = function (o) {
     return o && o.length !== undefined;
-  }
+  };
 
   Rx.helpers.iterator = $iterator$;