SpawnOptions.OptionsObject.killSignal

killSignal?: string | number

The signal to use when killing the process after a timeout, when the AbortSignal is aborted, or when the process goes over the maxBuffer limit.

// Kill the process with SIGKILL after 5 seconds
const subprocess = Bun.spawn({
  cmd: ["sleep", "10"],
  timeout: 5000,
  killSignal: "SIGKILL",
});