Fix when you want to document Object.prototype's methods

Author: btd

Diff for: lib/hierarchy.js

@@ -1,5 +1,7 @@
 'use strict';
 
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+
 /**
  * @param {Array<Object>} comments an array of parsed comments
  * @returns {Array<Object>} nested comments, with only root comments
@@ -9,8 +11,8 @@ module.exports = function (comments) {
   var id = 0,
     root = {
       members: {
-        instance: {},
-        static: {}
+        instance: Object.create(null),
+        static: Object.create(null)
       }
     };
 
@@ -44,7 +46,7 @@ module.exports = function (comments) {
         scope = segment[0],
         name = segment[1];
 
-      if (!node.members[scope].hasOwnProperty(name)) {
+      if (!hasOwnProperty.call(node.members[scope], name)) {
         node.members[scope][name] = {
           comments: [],
           members: {