执行nodejs并获得错误输出

Question

I am trying to fire a command via exec in my go binary to get JSON output of the other script. The other script is a nodejs task checking for html problems. If I fire the nodeJS task on cli everything works fine and I get JSON output, but if I fire the command inside of go I only get:

exit status 1

I am not total sure if the problem is a nodejs or a go problem, but even if nodejs founds HTML Problems I want to be able to analyze the JSON Response in my go script.

Here is my source code:

out, err := exec.Command("/usr/bin/testcafe", "'chromium:headless --no-sandbox'", "--reporter json", "/data/checks.js").Output()
status := http.StatusOK
message := ""
if err != nil {
    status = http.StatusNotImplemented
    message = err.Error() + string(string(out[:]))
    fmt.Println(message)
}

Answer 1

As mentioned above if you ever need to access Stderr from an Command Exit in Golang use:

message += string(err.(*exec.ExitError).Stderr[:])

In my case the nodejs tool gave an exit code based on the amounts of problems. Solved this it runs perfectly now =).