added unit testing, and started implementing unit tests...phew

node_modules/env-variable/index.js

@@ -0,0 +1,99 @@
+'use strict';
+
+var has = Object.prototype.hasOwnProperty;
+
+/**
+ * Gather environment variables from various locations.
+ *
+ * @param {Object} environment The default environment variables.
+ * @returns {Object} environment.
+ * @api public
+ */
+function env(environment) {
+  environment = environment || {};
+
+  if ('object' === typeof process && 'object' === typeof process.env) {
+    env.merge(environment, process.env);
+  }
+
+  if ('undefined' !== typeof window) {
+    if ('string' === window.name && window.name.length) {
+      env.merge(environment, env.parse(window.name));
+    }
+
+    if (window.localStorage) {
+      try { env.merge(environment, env.parse(window.localStorage.env || window.localStorage.debug)); }
+      catch (e) {}
+    }
+
+    if (
+         'object' === typeof window.location
+      && 'string' === typeof window.location.hash
+      && window.location.hash.length
+    ) {
+      env.merge(environment, env.parse(window.location.hash.charAt(0) === '#'
+        ? window.location.hash.slice(1)
+        : window.location.hash
+      ));
+    }
+  }
+
+  //
+  // Also add lower case variants to the object for easy access.
+  //
+  var key, lower;
+  for (key in environment) {
+    lower = key.toLowerCase();
+
+    if (!(lower in environment)) {
+      environment[lower] = environment[key];
+    }
+  }
+
+  return environment;
+}
+
+/**
+ * A poor man's merge utility.
+ *
+ * @param {Object} base Object where the add object is merged in.
+ * @param {Object} add Object that needs to be added to the base object.
+ * @returns {Object} base
+ * @api private
+ */
+env.merge = function merge(base, add) {
+  for (var key in add) {
+    if (has.call(add, key)) {
+      base[key] = add[key];
+    }
+  }
+
+  return base;
+};
+
+/**
+ * A poor man's query string parser.
+ *
+ * @param {String} query The query string that needs to be parsed.
+ * @returns {Object} Key value mapped query string.
+ * @api private
+ */
+env.parse = function parse(query) {
+  var parser = /([^=?&]+)=([^&]*)/g
+    , result = {}
+    , part;
+
+  if (!query) return result;
+
+  for (;
+    part = parser.exec(query);
+    result[decodeURIComponent(part[1])] = decodeURIComponent(part[2])
+  );
+
+  return result.env || result;
+};
+
+//
+// Expose the module
+//
+module.exports = env;