Process.env undefined on few libs

[3l0w]

• Version: 12.16.1 & 13.11.0

• Platform: Linux ordi-msi 4.15.0-91-generic new design of error handling node#92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

• Subsystem:

What steps will reproduce the bug?

when i try to use a libs who use process.env.
I try with https://www.npmjs.com/package/fluent-ffmpeg
and https://www.npmjs.com/package/websocket

How often does it reproduce? Is there a required condition?

Every times on my laptop

What do you see instead?

With ffmpeg:

(node:3739) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'FFMPEG_PATH' of undefined
    at /home/fl0w/dev/spotifyBot/node_modules/fluent-ffmpeg/lib/capabilities.js:96:25
    at nextTask (/home/fl0w/dev/spotifyBot/node_modules/async/dist/async.js:4576:27)
    at Object.waterfall (/home/fl0w/dev/spotifyBot/node_modules/async/dist/async.js:4587:9)
    at Object.awaitable [as waterfall]

https://github.com/fluent-ffmpeg/node-fluent-ffmpeg/blob/master/lib/capabilities.js#L96
With webSocket:

TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at Object.<anonymous> (/home/fl0w/dev/spotifyBot/node_modules/websocket/node_modules/debug/src/node.js:33:30)

https://github.com/visionmedia/debug/blob/master/src/node.js#L120

Additional information

Output of console.log(process.env) in the main file of my project is not undefined and has all env variable define.

EDIT: also does it on my vps : Linux ubuntu 18.04 with node v12.4.0

[addaleax]

You could try to add a setter for process.env that logs a stack trace, that probably helps with figuring out why this is happening, e.g.

{
  let env = process.env;
  Object.defineProperty(process, 'env', {
    enumerable: true,
    get() { return env; },
    set(v) { console.trace('process.env is being set here'); env = v; }
  });
}

[3l0w]

Thanks for you response but where i put this code?

[addaleax]

@3l0w Somewhere where there’s code that’s running while process.env is still intact. If necessary, save if in a different file and then start Node.js with --require /path/to/that/file.js, that way it will run even before the main script.

[3l0w]

that all i got...

[addaleax]

@3l0w --require is a Node.js option, not an option of your script, so it needs to go before the main script’s name, i.e. node --require process.js index.js

[3l0w]

[addaleax]

Okay, then I don’t quite know what’s happening. Is process itself being overridden somewhere?

(You can check using the same code as above, except with process replaced with global and env replaced with process)

[3l0w]

I try some test:
when i console.log(process.env) my env is display.
and i remove nvm from my computer and now ffmpeg work but websocket send same error

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