fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/vitefu/src/index.cjs

@@ -0,0 +1,18 @@
+// CJS -> ESM proxy file
+// Reference: https://github.com/vitejs/vite/blob/9f268dad2e82c0f1276b1098c0a28f1cf245aa50/packages/vite/index.cjs
+
+module.exports = require('./sync.cjs')
+
+// redirect async functions to ESM
+const asyncFunctions = [
+  'crawlFrameworkPkgs',
+  'findDepPkgJsonPath',
+  'findClosestPkgJsonPath',
+  'pkgNeedsOptimization'
+]
+
+for (const fn of asyncFunctions) {
+  module.exports[fn] = function () {
+    return import('./index.js').then((mod) => mod[fn].apply(this, arguments))
+  }
+}