added whole system from ola4doc

sys/node_modules/verror/examples/werror.js

@@ -0,0 +1,14 @@
+var mod_fs = require('fs');
+var mod_verror = require('../lib/verror');
+
+var filename = '/nonexistent';
+
+mod_fs.stat(filename, function (err1) {
+	var err2 = new mod_verror.WError(err1, 'failed to stat "%s"', filename);
+
+	/* The following would normally be higher up the stack. */
+	var err3 = new mod_verror.WError(err2, 'failed to handle request');
+	console.log(err3.message);
+	console.log(err3.toString());
+	console.log(err3.stack);
+});