доделали всё

index.js

@@ -13,8 +13,11 @@
 //   port.on('data', function (data) {
 //     console.log('Data:', data.toString('UTF8'))
 //   })
+
+const http = require('node:http');
 const { SerialPort } = require('serialport')
 const { ReadlineParser } = require('@serialport/parser-readline')
+
 const port = new SerialPort({ path: '/com16', baudRate: 9600 })
 
 var str = "";
@@ -25,4 +28,13 @@ parser.on('data', (data) => {
         console.log(data);
     }
     str = data;
-})
+})
+
+
+// Create a local server to receive data from
+const server = http.createServer((req, res) => {
+  res.writeHead(200, { 'Content-Type': 'application/json' });
+  res.end(str);
+});
+
+server.listen(2048);