尝试同时运行Express和Vue时出错

const express = require('express');
const app = express();
const port = 3000; // 设置端口

app.get('/', (req, res) => {
  res.send('Hello World!');
});

app.listen(port, () => {
  console.log(`Express app listening at http://localhost:${port}`);
});

module.exports = {
  devServer: {
    port: 8080 // 设置端口
  }
};

"scripts": {
  "serve": "vue-cli-service serve",
  "build": "vue-cli-service build",
  "lint": "vue-cli-service lint",
  "start": "node server.js" // 确保启动命令正确
}

npm update

rm -rf node_modules
npm install

const express = require('express');
const app = express();
const port = 3000;

app.get('/', (req, res) => {
  res.send('Hello World!');
});

app.listen(port, () => {
  console.log(`Express app listening at http://localhost:${port}`);
});

module.exports = {
  devServer: {
    port: 8080
  }
};