code: function signalKill(childProcess, callback) {
    childProcess.emit('signalKill');
    if (IS_WINDOWS) {
      const taskkill = spawn('taskkill', ['/F', '/T', '/PID', childProcess.pid]);
      taskkill.on('exit', (exitStatus) => {
        if (exitStatus) {
          return callback(
            new Error(`Unable to forcefully terminate process ${childProcess.pid}`)
          );
        }
        callback();
      });
    } else {
      childProcess.kill('SIGKILL');
      process.nextTick(callback);
    }
  }
docs: Signals the child process to forcefully terminate