Index: frontend/node_modules/walker/.travis.yml
===================================================================
--- frontend/node_modules/walker/.travis.yml	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/walker/.travis.yml	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,3 @@
+language: node_js
+node_js:
+  - 0.6
Index: frontend/node_modules/walker/LICENSE
===================================================================
--- frontend/node_modules/walker/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/walker/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+Copyright 2013 Naitik Shah
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
Index: frontend/node_modules/walker/lib/walker.js
===================================================================
--- frontend/node_modules/walker/lib/walker.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/walker/lib/walker.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,111 @@
+module.exports = Walker
+
+var path = require('path')
+  , fs = require('fs')
+  , util = require('util')
+  , EventEmitter = require('events').EventEmitter
+  , makeError = require('makeerror')
+
+/**
+ * To walk a directory. It's complicated (but it's async, so it must be fast).
+ *
+ * @param root {String} the directory to start with
+ */
+function Walker(root) {
+  if (!(this instanceof Walker)) return new Walker(root)
+  EventEmitter.call(this)
+  this._pending = 0
+  this._filterDir = function() { return true }
+  this.go(root)
+}
+util.inherits(Walker, EventEmitter)
+
+/**
+ * Errors of this type are thrown when the type of a file could not be
+ * determined.
+ */
+var UnknownFileTypeError = Walker.UnknownFileTypeError = makeError(
+  'UnknownFileTypeError',
+  'The type of this file could not be determined.'
+)
+
+/**
+ * Setup a function to filter out directory entries.
+ *
+ * @param fn {Function} a function that will be given a directory name, which
+ * if returns true will include the directory and it's children
+ */
+Walker.prototype.filterDir = function(fn) {
+  this._filterDir = fn
+  return this
+}
+
+/**
+ * Process a file or directory.
+ */
+Walker.prototype.go = function(entry) {
+  var that = this
+  this._pending++
+
+  fs.lstat(entry, function(er, stat) {
+    if (er) {
+      that.emit('error', er, entry, stat)
+      that.doneOne()
+      return
+    }
+
+    if (stat.isDirectory()) {
+      if (!that._filterDir(entry, stat)) {
+        that.doneOne()
+      } else {
+        fs.readdir(entry, function(er, files) {
+          if (er) {
+            that.emit('error', er, entry, stat)
+            that.doneOne()
+            return
+          }
+
+          that.emit('entry', entry, stat)
+          that.emit('dir', entry, stat)
+          files.forEach(function(part) {
+            that.go(path.join(entry, part))
+          })
+          that.doneOne()
+        })
+      }
+    } else if (stat.isSymbolicLink()) {
+      that.emit('entry', entry, stat)
+      that.emit('symlink', entry, stat)
+      that.doneOne()
+    } else if (stat.isBlockDevice()) {
+      that.emit('entry', entry, stat)
+      that.emit('blockDevice', entry, stat)
+      that.doneOne()
+    } else if (stat.isCharacterDevice()) {
+      that.emit('entry', entry, stat)
+      that.emit('characterDevice', entry, stat)
+      that.doneOne()
+    } else if (stat.isFIFO()) {
+      that.emit('entry', entry, stat)
+      that.emit('fifo', entry, stat)
+      that.doneOne()
+    } else if (stat.isSocket()) {
+      that.emit('entry', entry, stat)
+      that.emit('socket', entry, stat)
+      that.doneOne()
+    } else if (stat.isFile()) {
+      that.emit('entry', entry, stat)
+      that.emit('file', entry, stat)
+      that.doneOne()
+    } else {
+      that.emit('error', UnknownFileTypeError(), entry, stat)
+      that.doneOne()
+    }
+  })
+  return this
+}
+
+Walker.prototype.doneOne = function() {
+  if (--this._pending === 0) this.emit('end')
+  return this
+}
Index: frontend/node_modules/walker/package.json
===================================================================
--- frontend/node_modules/walker/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/walker/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,27 @@
+{
+  "name": "walker",
+  "description": "A simple directory tree walker.",
+  "version": "1.0.8",
+  "homepage": "https://github.com/daaku/nodejs-walker",
+  "author": "Naitik Shah <n@daaku.org>",
+  "keywords": [
+    "utils",
+    "fs",
+    "filesystem"
+  ],
+  "main": "lib/walker",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/daaku/nodejs-walker"
+  },
+  "scripts": {
+    "test": "NODE_PATH=./lib mocha --ui exports"
+  },
+  "dependencies": {
+    "makeerror": "1.0.12"
+  },
+  "devDependencies": {
+    "mocha": "9.1.3"
+  },
+  "license": "Apache-2.0"
+}
Index: frontend/node_modules/walker/readme.md
===================================================================
--- frontend/node_modules/walker/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/walker/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,52 @@
+walker [![Build Status](https://secure.travis-ci.org/daaku/nodejs-walker.png)](http://travis-ci.org/daaku/nodejs-walker)
+======
+
+A nodejs directory walker. Broadcasts events for various file types as well as
+a generic "entry" event for all types and provides the ability to prune
+directory trees. This shows the entire API; everything is optional:
+
+```javascript
+Walker('/etc/')
+  .filterDir(function(dir, stat) {
+    if (dir === '/etc/pam.d') {
+      console.warn('Skipping /etc/pam.d and children')
+      return false
+    }
+    return true
+  })
+  .on('entry', function(entry, stat) {
+    console.log('Got entry: ' + entry)
+  })
+  .on('dir', function(dir, stat) {
+    console.log('Got directory: ' + dir)
+  })
+  .on('file', function(file, stat) {
+    console.log('Got file: ' + file)
+  })
+  .on('symlink', function(symlink, stat) {
+    console.log('Got symlink: ' + symlink)
+  })
+  .on('blockDevice', function(blockDevice, stat) {
+    console.log('Got blockDevice: ' + blockDevice)
+  })
+  .on('fifo', function(fifo, stat) {
+    console.log('Got fifo: ' + fifo)
+  })
+  .on('socket', function(socket, stat) {
+    console.log('Got socket: ' + socket)
+  })
+  .on('characterDevice', function(characterDevice, stat) {
+    console.log('Got characterDevice: ' + characterDevice)
+  })
+  .on('error', function(er, entry, stat) {
+    console.log('Got error ' + er + ' on entry ' + entry)
+  })
+  .on('end', function() {
+    console.log('All files traversed.')
+  })
+```
+
+You specify a root directory to walk and optionally specify a function to prune
+sub-directory trees via the `filterDir` function. The Walker exposes a number
+of events, broadcasting various file type events a generic error event and
+finally the event to signal the end of the process.