add node modules to repo

node_modules/traverse/examples/stringify.js

@@ -0,0 +1,38 @@
+#!/usr/bin/env node
+var Traverse = require('traverse');
+
+var obj = [ 'five', 6, -3, [ 7, 8, -2, 1 ], { f : 10, g : -13 } ];
+
+var s = '';
+Traverse(obj).forEach(function to_s (node) {
+    if (Array.isArray(node)) {
+        this.before(function () { s += '[' });
+        this.post(function (child) {
+            if (!child.isLast) s += ',';
+        });
+        this.after(function () { s += ']' });
+    }
+    else if (typeof node == 'object') {
+        this.before(function () { s += '{' });
+        this.pre(function (x, key) {
+            to_s(key);
+            s += ':';
+        });
+        this.post(function (child) {
+            if (!child.isLast) s += ',';
+        });
+        this.after(function () { s += '}' });
+    }
+    else if (typeof node == 'string') {
+        s += '"' + node.toString().replace(/"/g, '\\"') + '"';
+    }
+    else if (typeof node == 'function') {
+        s += 'null';
+    }
+    else {
+        s += node.toString();
+    }
+});
+
+console.log('JSON.stringify: ' + JSON.stringify(obj));
+console.log('this stringify: ' + s);