.

qwen/nodejs/node_modules/passport-local/lib/utils.js

@@ -0,0 +1,11 @@
+exports.lookup = function(obj, field) {
+  if (!obj) { return null; }
+  var chain = field.split(']').join('').split('[');
+  for (var i = 0, len = chain.length; i < len; i++) {
+    var prop = obj[chain[i]];
+    if (typeof(prop) === 'undefined') { return null; }
+    if (typeof(prop) !== 'object') { return prop; }
+    obj = prop;
+  }
+  return null;
+};