Uncaught Error: Uncaught, unspecified "error" event. (Invalid namespace)

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• report a bug

Current behaviour

events.js:62 Uncaught Error: Uncaught, unspecified "error" event. (Invalid namespace)
    at Socket../node_modules/events/events.js.EventEmitter.emit (events.js:62)
    at Socket.<anonymous> (index.js:21)
    at Socket../node_modules/component-emitter/index.js.Emitter.emit (index.js:133)
    at Socket../node_modules/socket.io-client/lib/socket.js.Socket.emit (socket.js:136)
    at Socket../node_modules/socket.io-client/lib/socket.js.Socket.onpacket (socket.js:248)
    at Manager.<anonymous> (index.js:21)
    at Manager../node_modules/component-emitter/index.js.Emitter.emit (index.js:133)
    at Manager../node_modules/socket.io-client/lib/manager.js.Manager.ondecoded (manager.js:345)
    at Decoder.<anonymous> (index.js:21)
    at Decoder../node_modules/component-emitter/index.js.Emitter.emit (index.js:133)
----
./node_modules/events/events.js.EventEmitter.emit | @ | events.js:62
-- | -- | --
  | (anonymous) | @ | index.js:21
  | ./node_modules/component-emitter/index.js.Emitter.emit | @ | index.js:133
  | ./node_modules/socket.io-client/lib/socket.js.Socket.emit | @ | socket.js:136
  | ./node_modules/socket.io-client/lib/socket.js.Socket.onpacket | @ | socket.js:248
  | (anonymous) | @ | index.js:21
  | ./node_modules/component-emitter/index.js.Emitter.emit | @ | index.js:133
  | ./node_modules/socket.io-client/lib/manager.js.Manager.ondecoded | @ | manager.js:345
  | (anonymous) | @ | index.js:21
  | ./node_modules/component-emitter/index.js.Emitter.emit | @ | index.js:133
  | ./node_modules/socket.io-parser/index.js.Decoder.add | @ | index.js:241
  | ./node_modules/socket.io-client/lib/manager.js.Manager.ondata | @ | manager.js:335
  | (anonymous) | @ | index.js:21
  | ./node_modules/component-emitter/index.js.Emitter.emit | @ | index.js:133
  | ./node_modules/engine.io-client/lib/socket.js.Socket.onPacket | @ | socket.js:456
  | (anonymous) | @ | socket.js:273
  | ./node_modules/component-emitter/index.js.Emitter.emit | @ | index.js:133
  | ./node_modules/engine.io-client/lib/transport.js.Transport.onPacket | @ | transport.js:145
  | ./node_modules/engine.io-client/lib/transport.js.Transport.onData | @ | transport.js:137
  | ws.onmessage | @ | websocket.js:147
P.S. * (anonymous) index.js - file webpack:///./node_modules/component-emitter/index.js

Steps to reproduce

import * as io from "socket.io-client";

export const ss = require("socket.io-stream");

export const socket = io((process.env.NODE_ENV === "production" ? (window as any).location.origin : "http://localhost:1337") + "/socket_user", {
    reconnection: true,
    reconnectionAttempts: 10,
    reconnectionDelay: 1000,
    transports: ["websocket", "polling", "flashsocket"],
});

export const socketStream = io((process.env.NODE_ENV === "production" ? (window as any).location.origin : "http://localhost:1337") + "/socket_transfer", {
    reconnection: true,
    reconnectionAttempts: 10,
    reconnectionDelay: 1000,
    transports: ["websocket", "polling", "flashsocket"],
});

export const streamConnect = ss(socketStream);

socket.on("connect", () => {
    console.log("connect");
});
socket.on("event", () => {
    console.log("event");
});
socket.on("error", (error) => {
    console.error("error", error);
});

Setup

• OS: Mac OS X 10.12.6 64-bit
• browser: Opera 48.0.2685.39 / Chrome Version 61.0.3163.100
• socket.io version: 2.0.3 / 2.0.4

[rotem925]

Just to clarify, If there is an error thrown from the server (in my case an authorization middleware that return next with an error), first time the event error is trapped, second time onwards, we get to see this error.

[rotem925]

I have the same issue, is this going to be handled?