Can't get more then handful of colors in iTerm2 (3.2.7)

[jirikrepl]

I am using iTerm 3.2.7 can display 16M color, but debug-module will display only 16 colors.

This perl script can test color support in terminal: https://github.com/robertknight/konsole/blob/master/tests/color-spaces.pl
(source: https://apple.stackexchange.com/q/190167/265202)

Thank you for your help.

my debug test script:

const supportsColor = require('supports-color');

if (supportsColor.stdout) {
    console.log('Terminal stdout supports color');
}

if (supportsColor.stdout.has256) {
    console.log('Terminal stdout supports 256 colors');
}

if (supportsColor.stderr.has16m) {
    console.log('Terminal stderr supports 16 million colors (truecolor)');
}

const e1 = require('debug')('jest:1');
const e2 = require('debug')('jest:2');
const e3 = require('debug')('jest:3');
const e4 = require('debug')('jest:4');
const e5 = require('debug')('jest:5');
const e6 = require('debug')('jest:6');
const e7 = require('debug')('jest:7');
const e8 = require('debug')('jest:8');
const e9 = require('debug')('jest:9');
const e10 = require('debug')('jest:10');
const e11 = require('debug')('jest:11');
const e12 = require('debug')('jest:12');
const e13 = require('debug')('jest:13');
const e14 = require('debug')('jest:14');
const e15 = require('debug')('jest:15');
const e16 = require('debug')('jest:16');
const e17 = require('debug')('jest:17');
const e18 = require('debug')('jest:18');

e1('test');
e2('test');
e3('test');
e4('test');
e5('test');
e6('test');
e7('test');
e8('test');
e9('test');
e10('test');
e11('test');
e12('test');
e13('test');
e14('test');
e15('test');
e16('test');
e17('test');
e18('test');

[Qix-]

npm install supports-color

Relevant: #612

[jirikrepl]

Thank you for your quick answer. I think that I have supports-color module already installed. If you a look at my test script and then on the screenshot of what this script produces. (I think my script wouldn't work without supports-color module installed)

[Qix-]

Yes but it needs to be install alongside debug (as a sibling dependency). Is that the case? Can you post your dependencies block from your package.json?

[samism]

I am also having this issue. I have installed supports-color as a sibling dependency.

  "dependencies": {
    "app-root-path": "^2.1.0",
    "axios": "^0.18.0",
    "body-parser": "^1.18.3",
    "cheerio": "^1.0.0-rc.2",
    "cookie-parser": "~1.4.3",
    "debug": "^2.6.9",
    "dotenv": "^6.2.0",
    "express": "~4.16.0",
    "lodash": "^4.17.11",
    "moment": "^2.24.0",
    "morgan": "~1.9.0",
    "multer": "^1.4.1",
    "soap": "^0.25.0",
    "supports-color": "^6.1.0",
    "xlsx": "^0.14.1"
  },

[samism]

    "debug": "^2.6.9"

Nevermind, I'm an idiot.

[jirikrepl]

Hi, I had the same problem I had an old version of debug installed (3.1.0)

Not it works great for me!

"dependencies": {
    ...
    "debug": "^4.1.1",
    "supports-color": "^6.1.0",
    ...
}

[Qix-]

Glad it got resolved :)

[jirikrepl]

Unfortunately for me, those colors work only if I do npm run dev

but we use pm2 also on development to run all backend microservices.

If I do pm2 log I see only a few colors again:(

I tried to google the issue quickly. But can't find what's the problem.
I tried pm2 log --raw but still, just a few colors

EDIT:
If I evaluate this code with pm2 log

const supportsColor = require('supports-color');

console.log('--------');
console.log(supportsColor);
console.log('--------');

if (supportsColor.stdout) {
    console.log('Terminal stdout supports color');
}

if (supportsColor.stdout.has256) {
    console.log('Terminal stdout supports 256 colors');
}

if (supportsColor.stderr.has16m) {
    console.log('Terminal stderr supports 16 million colors (truecolor)');
}

I see this log:

2019-02-08 12:48:54: --------
2019-02-08 12:48:54: { supportsColor: [Function: getSupportLevel],
  stdout: false,
  stderr: false }
--------

I also reported this issue here: Unitech/pm2#4155

[Qix-]

This is a well known problem that isn't really an 'issue' per se. Pm2 would have to allocate a pseudo terminal. This is just how terminals work.

[lagden]

Now, the problem is the supports-color with the version above 8.
Only works with type module, so keep you package.json like this until show up some security problem or @Qix- update to esm:

{
  "peerDependencies": {
    "debug": ">= 4 < 5",
    "supports-color": ">= 8 < 9"
  }
}