I am using a bill acceptor for my kiosk app.I used a python library to use the acceptor and get the value of the currency. I want to return the jsonString variable when the getCash() method is called.

export const getCash = () => {
  var jsonString;
  var process = spawn('python', [
    './src/renderer/actions/Python-RS-232-master/main.py',
  ]);
  process.stdout.on('data', function (data: any) => {
    // var amount = data.toString();
    // console.log(amount);
    var obj: any = new Object();
    obj.amount = await data.toString();
    jsonString = JSON.stringify(obj);
  });
};