var express = require('express')var proxy = require('http-proxy-middleware')var app = express()app.use('/api', proxy({   target: 'http://xxxxx', // 目标代理地址   changeOrigin: true,   pathRewrite: {       '^/api': ''   }  }))app.use(express.static('dist'))app.get('*', function(req, res) {    res.sendfile('./dist/index.html')}) app.listen(8080, function(){   do sth. })