Outputs stderr into console

[scholtzm]

trafficstars

If running outside a container, this module (the command ran through spawnSync) will print a message into stderr on OSX:

cat: /proc/self/cgroup: No such file or directory

This is the same as running the command directly in Terminal:

$ cat /proc/self/cgroup
cat: /proc/self/cgroup: No such file or directory

Is this behavior expected?

[vjpr]

Having this issue too. It shouldn't do this.

[martintajur]

@scholtzm @vjpr Understand the problem, have you found ways to overcome this already by now, or what do you prefer would be a better solution? Emit an error event that one could listen to from their code above (and then decide to just ignore it if that is needed, for example)?

[scholtzm]

It's not really causing us any issues so it doesn't really bother me that much. 😄

I'm thinking the API of this package would get a lot more complicated (from a single boolean function to event emitting object), so I'm not sure if I would personally go that way. 🤔

[anujkumar-df]

@martintajur That's a good point, someone might want to run node app just inside the container, event emitting might be a good way to ensure that.

[OmgImAlexis]

Can you not just pass in stdio: 'ignore' as an option to child_process?

cgroups = child_process.execSync(cmd(), {
    stdio: 'ignore'
});

[ZaDarkSide]

This is happening also on Windows: 'cat' is not recognized as an internal or external command, operable program or batch file.

[crung]

Does the same thing on MacOS.

cat: /proc/self/cgroup: No such file or directory

Stops nodemon from running.

[nikolajevp]

DEPRECATED (You can use following package instead: https://github.com/sindresorhus/is-docker)