Refactoring day1

node_modules/inherits/inherits_browser.js

@@ -1,27 +1,23 @@
 if (typeof Object.create === 'function') {
   // implementation from standard node.js 'util' module
   module.exports = function inherits(ctor, superCtor) {
-    if (superCtor) {
-      ctor.super_ = superCtor
-      ctor.prototype = Object.create(superCtor.prototype, {
-        constructor: {
-          value: ctor,
-          enumerable: false,
-          writable: true,
-          configurable: true
-        }
-      })
-    }
+    ctor.super_ = superCtor
+    ctor.prototype = Object.create(superCtor.prototype, {
+      constructor: {
+        value: ctor,
+        enumerable: false,
+        writable: true,
+        configurable: true
+      }
+    });
   };
 } else {
   // old school shim for old browsers
   module.exports = function inherits(ctor, superCtor) {
-    if (superCtor) {
-      ctor.super_ = superCtor
-      var TempCtor = function () {}
-      TempCtor.prototype = superCtor.prototype
-      ctor.prototype = new TempCtor()
-      ctor.prototype.constructor = ctor
-    }
+    ctor.super_ = superCtor
+    var TempCtor = function () {}
+    TempCtor.prototype = superCtor.prototype
+    ctor.prototype = new TempCtor()
+    ctor.prototype.constructor = ctor
   }
 }