try'

api/utils/socket.ts

@@ -1,7 +1,9 @@
+const socketio = require("socket.io");
+
 let io: any
 
-const connect = (server) => {
-  const io = require('socket.io')(server, {
+function connect(server) {
+  io = socketio(server, {
     path: '/socket',
     serveClient: false,
     // below are engine.IO options

dist/api/utils/socket.js

@@ -1,8 +1,9 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
+const socketio = require("socket.io");
 let io;
-const connect = (server) => {
-    const io = require('socket.io')(server, {
+function connect(server) {
+    io = socketio(server, {
         path: '/socket',
         serveClient: false,
         // below are engine.IO options
@@ -15,7 +16,7 @@ const connect = (server) => {
         client.on('event', data => { });
         client.on('disconnect', () => { });
     });
-};
+}
 exports.connect = connect;
 const send = (body) => {
     // srvr.clients.forEach(c=>{

dist/api/utils/socket.js.map

@@ -1 +1 @@
-{"version":3,"file":"socket.js","sourceRoot":"","sources":["../../../api/utils/socket.ts"],"names":[],"mappings":";;AAAA,IAAI,EAAO,CAAA;AAEX,MAAM,OAAO,GAAG,CAAC,MAAM,EAAE,EAAE;IACzB,MAAM,EAAE,GAAG,OAAO,CAAC,WAAW,CAAC,CAAC,MAAM,EAAE;QACtC,IAAI,EAAE,SAAS;QACf,WAAW,EAAE,KAAK;QAClB,8BAA8B;QAC9B,YAAY,EAAE,KAAK;QACnB,WAAW,EAAE,IAAI;QACjB,MAAM,EAAE,KAAK;KACd,CAAC,CAAC;IAEH,EAAE,CAAC,EAAE,CAAC,YAAY,EAAE,MAAM,CAAC,EAAE;QAC3B,OAAO,CAAC,GAAG,CAAC,2BAA2B,CAAC,CAAA;QACxC,MAAM,CAAC,EAAE,CAAC,OAAO,EAAE,IAAI,CAAC,EAAE,GAAW,CAAC,CAAC,CAAC;QACxC,MAAM,CAAC,EAAE,CAAC,YAAY,EAAE,GAAG,EAAE,GAAW,CAAC,CAAC,CAAC;IAC7C,CAAC,CAAC,CAAC;AACL,CAAC,CAAA;AAcC,0BAAO;AAZT,MAAM,IAAI,GAAG,CAAC,IAAI,EAAE,EAAE;IACpB,4BAA4B;IAC5B,uBAAuB;IACvB,KAAK;IACL,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,IAAI,CAAC,CAAA;AACvB,CAAC,CAAA;AAQC,oBAAI;AANN,MAAM,QAAQ,GAAG,CAAC,MAAM,EAAE,EAAE;IAC1B,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC,CAAA;AAC9B,CAAC,CAAA;AAKC,4BAAQ"}
+{"version":3,"file":"socket.js","sourceRoot":"","sources":["../../../api/utils/socket.ts"],"names":[],"mappings":";;AAAA,MAAM,QAAQ,GAAG,OAAO,CAAC,WAAW,CAAC,CAAC;AAEtC,IAAI,EAAO,CAAA;AAEX,SAAS,OAAO,CAAC,MAAM;IACrB,EAAE,GAAG,QAAQ,CAAC,MAAM,EAAE;QACpB,IAAI,EAAE,SAAS;QACf,WAAW,EAAE,KAAK;QAClB,8BAA8B;QAC9B,YAAY,EAAE,KAAK;QACnB,WAAW,EAAE,IAAI;QACjB,MAAM,EAAE,KAAK;KACd,CAAC,CAAC;IAEH,EAAE,CAAC,EAAE,CAAC,YAAY,EAAE,MAAM,CAAC,EAAE;QAC3B,OAAO,CAAC,GAAG,CAAC,2BAA2B,CAAC,CAAA;QACxC,MAAM,CAAC,EAAE,CAAC,OAAO,EAAE,IAAI,CAAC,EAAE,GAAW,CAAC,CAAC,CAAC;QACxC,MAAM,CAAC,EAAE,CAAC,YAAY,EAAE,GAAG,EAAE,GAAW,CAAC,CAAC,CAAC;IAC7C,CAAC,CAAC,CAAC;AACL,CAAC;AAcC,0BAAO;AAZT,MAAM,IAAI,GAAG,CAAC,IAAI,EAAE,EAAE;IACpB,4BAA4B;IAC5B,uBAAuB;IACvB,KAAK;IACL,EAAE,CAAC,OAAO,CAAC,IAAI,CAAC,IAAI,CAAC,CAAA;AACvB,CAAC,CAAA;AAQC,oBAAI;AANN,MAAM,QAAQ,GAAG,CAAC,MAAM,EAAE,EAAE;IAC1B,IAAI,CAAC,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC,CAAA;AAC9B,CAAC,CAAA;AAKC,4BAAQ"}