updated package.json

node_modules/deep-equal/lib/keys.js

@@ -0,0 +1,9 @@
+exports = module.exports = typeof Object.keys === 'function'
+  ? Object.keys : shim;
+
+exports.shim = shim;
+function shim (obj) {
+  var keys = [];
+  for (var key in obj) keys.push(key);
+  return keys;
+}