add minimal TS bundler

build.js

@@ -0,0 +1,31 @@
+// build.js
+import * as esbuild from "esbuild";
+
+const isDev = process.argv.includes("--dev");
+
+const config = {
+  entryPoints: ["frontend/static/frontend/ts/main.ts"], // il tuo entry point
+  bundle: true,
+  outdir: "frontend/static/frontend/dist",
+  format: "iife", // o 'iife' se serve per un tag <script> classico
+  target: "es2020",
+  sourcemap: isDev,
+  minify: !isDev,
+  logLevel: "info",
+};
+
+if (isDev) {
+  const ctx = await esbuild.context(config);
+  await ctx.watch();
+  console.log("Watching...");
+
+  const shutdown = async () => {
+    await ctx.dispose();
+    process.exit(0);
+  };
+
+  process.on("SIGINT", shutdown);
+  process.on("SIGTERM", shutdown);
+} else {
+  await esbuild.build(config);
+}