Merge pull request #1131 from AprilArcus/april/1130

Author: zloirock

packages/core-js/internals/function-uncurry-this.js

@@ -6,8 +6,14 @@ var call = FunctionPrototype.call;
 var uncurryThis = NATIVE_BIND && bind.bind(call, call);
 
 module.exports = function (fn) {
-  // Nashorn bug, https://github.com/zloirock/core-js/issues/1128
-  return fn && (NATIVE_BIND && fn instanceof Function ? uncurryThis(fn) : function () {
-    return call.apply(fn, arguments);
-  });
+  var isNativeFunction = fn instanceof Function;
+  // Nashorn bug:
+  //   https://github.com/zloirock/core-js/issues/1128
+  //   https://github.com/zloirock/core-js/issues/1130
+  if (!isNativeFunction) return;
+  return NATIVE_BIND
+    ? uncurryThis(fn)
+    : function () {
+      return call.apply(fn, arguments);
+    };
 };