意外字符“？”表达

Question

运行server.js文件时，出现语法错误，内容大致如下：

  

文件?中的意外字符@babel\core\lib\transformation\normalize-file.js:209

当我尝试使用以下代码执行server.js时：

import path from 'path';
import express from 'express';

var app = express();
var port = 3000;
​
app.get('/', (req, res) => res.send('Hello World!'))

app.listen(port, () => console.log(`Example app listening on port ${port}!`))

但是如果我使用以下代码运行它就可以了：

import http from 'http';

http.createServer((req, res) => {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(1337, '127.0.0.1');

console.log('Server running at http://127.0.0.1:1337/');

Express和Babel似乎有问题吗？

我将在下面添加package.json和.babelrc：

package.json：

{
  "name": "counter",
  "version": "0.0.1",
  "private": true,
  "devDependencies": {
    "@babel/cli": "^7.0.0",
    "@babel/core": "^7.0.1",
    "@babel/node": "^7.0.0",
    "@babel/plugin-syntax-dynamic-import": "^7.0.0",
    "@babel/preset-env": "^7.0.0",
    "@babel/preset-react": "^7.0.0",
    "babel-plugin-dynamic-import-node": "^2.1.0",
    "enzyme": "^3.3.0",
    "enzyme-adapter-react-16": "^1.1.1",
    "express": "^4.16.3",
    "nodemon": "^1.18.4",
    "path": "^0.12.7",
    "react": "^16.5.1",
    "react-dom": "^16.5.1",
    "react-scripts": "^1.1.4"
  },
  "dependencies": {
    "prop-types": "^15.6.1",
    "react-redux": "^5.0.7",
    "redux": "^3.5.2"
  },
  "scripts": {
    "start": "nodemon --exec babel-node server\\server.js ",
    "build": "react-scripts build",
    "eject": "react-scripts eject",
    "test": "react-scripts test"
  }
}

.babelrc：

{
  "presets": ["@babel/preset-react","env"],
  "plugins": ["@babel/plugin-syntax-dynamic-import","dynamic-import-node"]
}