next: esbuild loader

packages/ui-default/backendlib/template.js

@@ -1,4 +1,6 @@
 const fs = require('fs');
+const esbuild = require('esbuild');
+const { renderToString } = require('react-dom/server');
 const path = require('path');
 const yaml = require('js-yaml');
 const serialize = require('serialize-javascript');