NodeJS获取请求数组映射返回未定义

const http = require('http');

const server = http.createServer((req, res) => {
  // 在这里处理请求
});

server.listen(3000, () => {
  console.log('Server is running on port 3000');
});

const server = http.createServer((req, res) => {
  const url = req.url;
  // 在这里处理请求
});

const server = http.createServer((req, res) => {
  const url = req.url;
  const pathArray = url.split('/');
  // 在这里处理请求
});

const server = http.createServer((req, res) => {
  const url = req.url;
  const pathArray = url.split('/');
  const mappedArray = pathArray.map((path) => {
    // 对每个路径进行映射操作
    // 返回未定义的情况
    return undefined;
  });
  // 在这里处理请求
});

const server = http.createServer((req, res) => {
  const url = req.url;
  const pathArray = url.split('/');
  const mappedArray = pathArray.map((path) => {
    // 对每个路径进行映射操作
    // 返回未定义的情况
    return undefined;
  });
  res.end(mappedArray.toString());
});