debug('Listening on ' + bind) doesn't output anything

[kevinSuttle]

In reference to the line in the generated bin/www

function onListening() {
  var addr = server.address();
  var bind = typeof addr === 'string'
    ? 'pipe ' + addr
    : 'port ' + addr.port;
  debug('Listening on ' + bind);
}

I never seem to get any output to my shell from this, even setting:

DEBUG=myapp node /bin/www 

❯ npm run debug

> myapp@0.0.0 debug /Users/kevinsuttle/Code/myapp
> DEBUG=myapp node bin/www

Am I totally doing this wrong?

[dougwilson]

Hi! So the output from the generator itself should have said your environment variable needs to be DEBUG=myapp:*, rather than DEBUG=myapp. Does that work?

[dougwilson]

I'm also assuming your app is actually called "myapp". The generator's own output will tell you the true environment variable to set. From your link, it should have told you DEBUG=generator-socket-4.12.1:*

[kevinSuttle]

So, in my package.json:

{
  "name": "myapp",
  "main": "app.js",
  "scripts": {
    "start": "node ./bin/www",
    "debug": "DEBUG=myapp node ./bin/www"
  },

In the shell:

DEBUG=myapp:*

In bin/www:

var debug = require('debug')('myapp:server');

[dougwilson]

Ok... We don't add a debug script to the package.json file...

[dougwilson]

What is the output of express --version on your machine?

[kevinSuttle]

Yeah the debug was mine. No one uses it anyway. Will delete.

❯ express --version
4.12.1

[dougwilson]

But otherwise, it should print out following the debug command the generatory tool should have displayed to you:

DEBUG=myapp:* node ./bin/www

(note that :* that you were missing from your initial question).

[kevinSuttle]

Yeah, I just don't see this output anything to the shell:

  debug('Listening on ' + bind);

[dougwilson]

I'm not having that issue here. Can you send me the complete application you are trying to use (upload to like a Github repo)? Creating a new application here works perfectly:

$ express myapp

   create : myapp
   create : myapp/package.json
   create : myapp/app.js
   create : myapp/public
   create : myapp/public/images
   create : myapp/public/stylesheets
   create : myapp/public/stylesheets/style.css
   create : myapp/views
   create : myapp/views/index.jade
   create : myapp/views/layout.jade
   create : myapp/views/error.jade
   create : myapp/bin
   create : myapp/bin/www
   create : myapp/routes
   create : myapp/routes/index.js
   create : myapp/routes/users.js

   install dependencies:
     $ cd myapp && npm install

   run the app:
     $ DEBUG=myapp:* ./bin/www

   create : myapp/public/javascripts

$ cd myapp
$ npm install
debug@2.1.3 node_modules\debug
└── ms@0.7.0

cookie-parser@1.3.4 node_modules\cookie-parser
├── cookie-signature@1.0.6
└── cookie@0.1.2

morgan@1.5.2 node_modules\morgan
├── basic-auth@1.0.0
├── depd@1.0.1
└── on-finished@2.2.0 (ee-first@1.1.0)

serve-favicon@2.2.0 node_modules\serve-favicon
├── fresh@0.2.4
├── parseurl@1.3.0
├── ms@0.7.0
└── etag@1.5.1 (crc@3.2.1)

body-parser@1.12.3 node_modules\body-parser
├── content-type@1.0.1
├── raw-body@1.3.4
├── bytes@1.0.0
├── qs@2.4.1
├── depd@1.0.1
├── on-finished@2.2.0 (ee-first@1.1.0)
├── iconv-lite@0.4.8
└── type-is@1.6.1 (media-typer@0.3.0, mime-types@2.0.10)

express@4.12.3 node_modules\express
├── fresh@0.2.4
├── merge-descriptors@1.0.0
├── cookie-signature@1.0.6
├── cookie@0.1.2
├── methods@1.1.1
├── escape-html@1.0.1
├── utils-merge@1.0.0
├── range-parser@1.0.2
├── content-type@1.0.1
├── finalhandler@0.3.4
├── parseurl@1.3.0
├── vary@1.0.0
├── serve-static@1.9.2
├── depd@1.0.1
├── content-disposition@0.5.0
├── path-to-regexp@0.1.3
├── on-finished@2.2.0 (ee-first@1.1.0)
├── qs@2.4.1
├── etag@1.5.1 (crc@3.2.1)
├── send@0.12.2 (destroy@1.0.3, ms@0.7.0, mime@1.3.4)
├── proxy-addr@1.0.7 (forwarded@0.1.0, ipaddr.js@0.1.9)
├── type-is@1.6.1 (media-typer@0.3.0, mime-types@2.0.10)
└── accepts@1.2.5 (negotiator@0.5.1, mime-types@2.0.10)

jade@1.9.2 node_modules\jade
├── character-parser@1.2.1
├── commander@2.6.0
├── void-elements@2.0.1
├── mkdirp@0.5.0 (minimist@0.0.8)
├── with@4.0.3 (acorn-globals@1.0.4, acorn@1.0.3)
├── constantinople@3.0.1 (acorn-globals@1.0.4)
└── transformers@2.1.0 (promise@2.0.0, css@1.0.8, uglify-js@2.2.5)

$ DEBUG=myapp:* ./bin/www
  myapp:server Listening on port 3000 +0ms

I don't know what else to say.

[kevinSuttle]

Weird. It just started working on myapp. Rubber-duck debugging at its finest.

Tried this one, and fine as well. https://github.com/kevinSuttle/express-generator-socket

Thanks anyway, @dougwilson. Wish I could point to something that changed so that future people that stumble upon this could have something useful. :/

[dougwilson]

Hm, that's really weird. I really hate that too :( Typically I usually lock complete issues on GitHub, but I'm leaving this open in case you find out what it was and want to post here :)