add http-server part 6.1.4

backend/server.ts

@@ -1,5 +1,5 @@
 import express from 'express';
-import { executeCommand } from './broker';
+import { executeCommand } from './broker.js';
 
 const app = express();
 const port = 8080;

tsconfig.backend.json

@@ -2,7 +2,8 @@
     "extends": "./tsconfig.json",
     "compilerOptions": {
       "outDir": "./dist/backend",
-      "module": "ESNext"
+      "module": "ESNext",
+      "moduleResolution": "node"
     },
     "include": ["backend/**/*.ts"]
 }