Initial commit of files.

node_modules/dynamic-dedupe/index.js

@@ -0,0 +1,80 @@
+'use strict';
+
+var fs     =  require('fs');
+var path   =  require('path');
+var xtend  =  require('xtend');
+var crypto =  require('crypto');
+
+var loadeds = {};
+var extensions = xtend(require.extensions);
+ 
+function getHash(data) {
+  return crypto
+    .createHash('md5')
+    .update(data)
+    .digest('hex');
+}
+
+/**
+ * Activates deduping for files with the given extension.
+ * 
+ * @name activate
+ * @function
+ * @param ext {String} (optional) extension for which to activate deduping (default: '.js')
+ * @param subdirs {Number} (optional) how many subdirs right above the module
+ *    have to be the same in order for it to be considered identical  (default: 2)
+ *
+ *  Example: sudirs: 2 -- x/foo/bar/main.js === y/foo/bar/main.js
+ *                        x/boo/bar/main.js !== y/foo/bar/main.js
+ */
+exports.activate = function (ext, subdirs) { 
+  ext = ext || '.js';
+  subdirs = typeof subdirs === 'undefined' ? 2 : subdirs;
+
+  var ext_super = require.extensions[ext];
+
+  require.extensions[ext] = function dedupingExtension(module, file) {
+
+    var src = fs.readFileSync(file, 'utf8');
+
+    // hash includes filename and subdir name(s) to make override more strict
+    var fulldir  =  path.dirname(file);
+    var dirs     =  fulldir.split(path.sep);
+    var dir      =  '';
+
+    for (var i = subdirs; i > 0 && dirs.length; i--) dir = dirs.pop() + dir;
+
+    var filename =  path.basename(file);
+    var hash     =  getHash(src + dir + filename);
+
+    var loaded = loadeds[hash];
+    if (loaded) {
+      module.exports = loaded.module.exports;
+    } else {
+      ext_super(module, file);
+      loadeds[hash] = { file: file,  module: module };
+    }
+  };
+};
+
+/**
+ * Deactivates deduping files with the given extension.
+ * 
+ * @name deactivate
+ * @function
+ * @param ext {String} (optional) extension for which to activate deduping (default: '.js')
+ */
+exports.deactivate = function (ext) {
+  ext = ext || '.js';
+  require.extensions[ext] = extensions[ext];
+};
+
+/**
+ * Clears the registry that contains previously loaded modules.
+ * 
+ * @name reset
+ * @function
+ */
+exports.reset = function () {
+  loadeds = {};
+};