热加载报错

// 1. 生产环境
// ---------------------------
// [WDS] Disconnected!
// close @ client:172
// eval @ socket.js:26
// EventTarget.dispatchEvent @ sockjs.js:170
// eval @ sockjs.js:970
// setTimeout(异步)
// SockJS._close @ sockjs.js:958
// SockJS._transportClose @ sockjs.js:917
// g @ sockjs.js:66
// EventEmitter.emit @ sockjs.js:86
// WebSocketTransport.ws.onclose @ sockjs.js:2976
// VM6125 sockjs.js:1606 GET http://127.0.0.1:8080/sockjs-node/info?t=1584905472090 net::ERR_CONNECTION_REFUSED

// 解决
// 1.
// node_modules/sockjs-client/dist/sockjs.js 代码的1605行注释
// // self.xhr.send(payload);
// 可在代码开发完成后关闭，会同步关闭热加载

// 2.
// 127.0.0.1 -> localhost

来源：https://www.cnblogs.com/guangzan/p/12585595.html