Add production dependencies

node_modules/object.defaults/immutable.js

@@ -0,0 +1,20 @@
+'use strict';
+
+var slice = require('array-slice');
+
+var defaults = require('./mutable');
+
+/**
+ * Extends an empty object with properties of one or
+ * more additional `objects`
+ *
+ * @name .defaults.immutable
+ * @param  {Object} `objects`
+ * @return {Object}
+ * @api public
+ */
+
+module.exports = function immutableDefaults() {
+  var args = slice(arguments);
+  return defaults.apply(null, [{}].concat(args));
+};