pubsub err

[mccoysc]

    throw err
    ^

Error: Cannot read property 'subscribe' of undefined
at parseError (C:\Users\mccoyzhou\AppData\Roaming\npm\node_modules\ipfs\node_modules\ipfs-api\src\utils\send-request.js:17:17)
at ClientRequest. (C:\Users\mccoyzhou\AppData\Roaming\npm\node_modules\ipfs\node_modules\ipfs-api\src\utils\send-request.js:47:14)
at Object.onceWrapper (events.js:315:30)
at emitOne (events.js:116:13)
at ClientRequest.emit (events.js:211:7)
at HTTPParser.parserOnIncomingClient (_http_client.js:551:21)
at HTTPParser.parserOnHeadersComplete (_http_common.js:115:23)
at Socket.socketOnData (_http_client.js:440:20)
at emitOne (events.js:116:13)
at Socket.emit (events.js:211:7)

[alanshaw]

Hi @mccoysc can you provide some more information? Do you have a code example you can paste here?

[tchardin]

I think this might be the same issue:
(running with the default create-react-app setup and [email protected])

import React from 'react';
import IPFS from 'ipfs';

class ErrorCases extends React.Component {
  constructor() {
    super();
    this.node = new IPFS({
      repo: String(Math.random() + Date.now()),
      Experimental: {
        pubsub: true,
      },
      config: {
        Addresses: {
          Swarm: [
            '/dns4/ws-star.discovery.libp2p.io/tcp/443/wss/p2p-websocket-star',
          ],
        },
      },
    });
  }
  componentDidMount() {
    this.node.once('ready', () => {
      this.node.pubsub.subscribe('topic', console.log).catch(console.error);
    });
  }
  render() {
    return null;
  }
}

Error:

[tchardin]

Fixed this btw. Experimental should be EXPERIMENTAL. Rookie mistake!

[alanshaw]

Yes, the pubsub property doesn't get set on the libp2p node if you don't enable pubsub in the config.

@mccoysc this is likely the cause of your problem too.