Access domain local no need change file hosts

server.js

//proxy local
//npm install http-proxy
//npm install http-proxy-middleware
//node server.js

//http://demo1.lvh.me:8082   from demo1.lvh.me:8180 of server (server domain need *.lvh.me )  (lvh.me dns default for localhost)
//http://blog.lvh.me:8082
//http://api.lvh.me:8082

const http = require('http');
const httpProxy = require('http-proxy');

const proxy = httpProxy.createProxyServer({});

http.createServer((req, res) => {
    const host = req.headers.host || '';

    console.log(host);

    if (host.includes('demo1.lvh.me')) {
        proxy.web(req, res, {
            target: 'http://127.0.0.1:8180'
        });
        return;
    }
    if (host.includes('blog.lvh.me')) {
        proxy.web(req, res, {
            target: 'http://127.0.0.1:8180'
        });
        return;
    }

    if (host.includes('api.lvh.me')) {
        proxy.web(req, res, {
            target: 'http://127.0.0.1:8000'
        });
        return;
    }

    res.end('not found');
}).listen(8082, () => {
    console.log('proxy running');
});