How do I debug this?

[tgbv]

I'm on Nodejs. I have this code:

process.env.DEBUG="*"

const IO = require('socket.io-client')

const IoClient = new IO(`ws://domain.com`)

Naturally it doesn't connect, but that is not shown anywhere! No exception is thrown, how do I know why this didn't connect?

The following methods, one by one, did not work:

process.env.DEBUG="*"

set DEBUG=*

IoClient.on('error', function(err){
    console.log('Connection Failed', err);
});

IoClient.on('connect_failed', function(err){
    console.log('Connection Failed', err);
});

[tgbv]

Sorted out. Turns out process.env.DEBUG="*" must be placed above everything to work.