Prebuild / postbuild execute command or task

[Invisibleman1002]

In a tasks.json file you can have something like this:

{
      "label": "Stop Serial",
      "type": "process",
      "command": "${command:serialdevices.stop}"
}

Is there a way to have the build commands run a specific task or at least run a command from another extension?

This would be ideal, otherwise maybe be able to execute the above task,

"prebuild": "${command:serialdevices.stop}"

[StefanKellerAC]

Yes, at least an acoustic signal when build/upload is ready would be fine.
Especially with different signals, when Arduino exits with or without error.