Fix WebSocket, add auto refresh on frontend update

node_modules/jake/test/integration/list_tasks.js

@@ -0,0 +1,15 @@
+const PROJECT_DIR = process.env.PROJECT_DIR;
+const JAKE_CMD = `${PROJECT_DIR}/bin/cli.js`;
+
+let assert = require('assert');
+let proc = require('child_process');
+
+suite('listTasks', function () {
+  test('execute "jake -T" without any errors', function () {
+    let message = 'cannot run "jake -T" command';
+    let listTasks = function () {
+      proc.execFileSync(JAKE_CMD, ['-T']);
+    };
+    assert.doesNotThrow(listTasks, TypeError, message);
+  });
+});