dont use for-in

controllers/registry/user_package.js

@@ -42,10 +42,15 @@ exports.list = function* () {
   }
 
   var data = yield tasks;
-  for (var k in data) {
-    if (data[k].length === 0) {
-      data[k] = undefined;
+
+  var keys = Object.keys(data);
+  for (var k = 0; k < keys.length; k++) {
+    var key = keys[k];
+    // make empty object as undefined
+    if (data[key].length === 0) {
+      data[key] = undefined;
     }
   }
+
   this.body = data;
 };

package.json

@@ -39,6 +39,7 @@
     "koa-middlewares": "~2.1.0",
     "koa-mock": "~1.5.0",
     "koa-safe-jsonp": "~0.3.0",
+    "lodash": "^3.10.1",
     "markdown-it": "~3.0.6",
     "mime": "~1.3.4",
     "mini-logger": "~1.0.0",

services/package.js

@@ -12,6 +12,8 @@
  * Module dependencies.
  */
 
+var _ = require('lodash');
+
 var models = require('../models');
 var common = require('./common');
 var Tag = models.Tag;
@@ -219,11 +221,11 @@ exports.listPublicModuleNamesSince = function* (start) {
 exports.listAllPublicModuleNames = function* () {
   var sql = 'SELECT DISTINCT(name) AS name FROM tag ORDER BY name';
   var rows = yield models.query(sql);
-  return rows.filter(function (row) {
+  return _.chain(rows).filter(function (row) {
     return !common.isPrivatePackage(row.name);
   }).map(function (row) {
     return row.name;
-  });
+  }).value();
 };
 
 exports.listModulesByName = function* (moduleName) {
@@ -233,10 +235,10 @@ exports.listModulesByName = function* (moduleName) {
     },
     order: [ ['id', 'DESC'] ]
   });
-  return mods.map(function (mod) {
+  return _.chain(mods).map(function (mod) {
     parseRow(mod);
     return mod;
-  });
+  }).value();
 };
 
 exports.getModuleLastModified = function* (name) {