added article

test/node_modules/querystring/querystring.js

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+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+// Query String Utilities
+
+(typeof define === "undefined" ? function($) { $(require, exports, module) } : define)(function(require, exports, module, undefined) {
+"use strict";
+
+var QueryString = exports;
+
+function charCode(c) {
+  return c.charCodeAt(0);
+}
+
+QueryString.unescape = decodeURIComponent;
+QueryString.escape = encodeURIComponent;
+
+var stringifyPrimitive = function(v) {
+  switch (typeof v) {
+    case 'string':
+      return v;
+
+    case 'boolean':
+      return v ? 'true' : 'false';
+
+    case 'number':
+      return isFinite(v) ? v : '';
+
+    default:
+      return '';
+  }
+};
+
+
+QueryString.stringify = QueryString.encode = function(obj, sep, eq, name) {
+  sep = sep || '&';
+  eq = eq || '=';
+  obj = (obj === null) ? undefined : obj;
+
+  switch (typeof obj) {
+    case 'object':
+      return Object.keys(obj).map(function(k) {
+        if (Array.isArray(obj[k])) {
+          return obj[k].map(function(v) {
+            return QueryString.escape(stringifyPrimitive(k)) +
+                   eq +
+                   QueryString.escape(stringifyPrimitive(v));
+          }).join(sep);
+        } else {
+          return QueryString.escape(stringifyPrimitive(k)) +
+                 eq +
+                 QueryString.escape(stringifyPrimitive(obj[k]));
+        }
+      }).join(sep);
+
+    default:
+      if (!name) return '';
+      return QueryString.escape(stringifyPrimitive(name)) + eq +
+             QueryString.escape(stringifyPrimitive(obj));
+  }
+};
+
+// Parse a key=val string.
+QueryString.parse = QueryString.decode = function(qs, sep, eq) {
+  sep = sep || '&';
+  eq = eq || '=';
+  var obj = {};
+
+  if (typeof qs !== 'string' || qs.length === 0) {
+    return obj;
+  }
+
+  qs.split(sep).forEach(function(kvp) {
+    var x = kvp.split(eq);
+    var k = QueryString.unescape(x[0], true);
+    var v = QueryString.unescape(x.slice(1).join(eq), true);
+
+    if (!(k in obj)) {
+      obj[k] = v;
+    } else if (!Array.isArray(obj[k])) {
+      obj[k] = [obj[k], v];
+    } else {
+      obj[k].push(v);
+    }
+  });
+
+  return obj;
+};
+
+});