fix(cli): adjusted build and main field for backend

packages/backend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "example-backend",
   "version": "0.1.1-alpha.7",
-  "main": "dist/index.cjs",
+  "main": "dist",
   "types": "src/index.ts",
   "private": true,
   "license": "Apache-2.0",
@@ -9,8 +9,8 @@
     "node": ">=12"
   },
   "scripts": {
-    "build": "backstage-cli build --outputs cjs",
-    "start": "backstage-cli watch-deps --build -- backstage-cli backend:dev",
+    "build": "tsc",
+    "start": "backstage-cli backend:dev",
     "lint": "backstage-cli lint",
     "test": "backstage-cli test",
     "clean": "backstage-cli clean",

packages/cli/src/lib/bundler/config.ts

@@ -80,10 +80,14 @@ export function createConfig(
   );
 
   const backendRelatedConfig = {
-    watch: true,
-    watchOptions: {
-      ignored: [/node_modules\/(?!\@backstage)/],
-    },
+    ...(isDev
+      ? {
+          watch: true,
+          watchOptions: {
+            ignored: [/node_modules\/(?!\@backstage)/],
+          },
+        }
+      : {}),
     externals: [
       nodeExternals({
         modulesDir: paths.rootNodeModules,