install gulp to process code

node_modules/undertaker/lib/registry.js

@@ -0,0 +1,25 @@
+'use strict';
+
+var validateRegistry = require('./helpers/validateRegistry');
+
+function setTasks(registry, nameAndTask) {
+  var name = nameAndTask[0];
+  var task = nameAndTask[1];
+  registry.set(name, task);
+  return registry;
+}
+
+function registry(newRegistry) {
+  if (!newRegistry) {
+    return this._registry;
+  }
+
+  validateRegistry(newRegistry);
+
+  var tasks = this._registry.tasks();
+
+  this._registry = Object.entries(tasks).reduce(setTasks, newRegistry);
+  this._registry.init(this);
+}
+
+module.exports = registry;