async function subFunction(index) {
  console.log(`UUT: Starting subfunction ${index} at ${new Date().toISOString()}`);
  // Simulate an asynchronous operation
  await new Promise((resolve) => setTimeout(resolve, 1000));
  console.log(`UUT: Completed subfunction ${index} at ${new Date().toISOString()}`);
}

async function mainFunction() {
  for (let i = 1; i <= 5; i++) {
    // await subFunction(i); // this won't work
    await UUT.subFunction(i);
  }
  console.log(`UUT: Waiting a couple of seconds after subfunctions at ${new Date().toISOString()}`);
  await new Promise((resolve) => setTimeout(resolve, 2000));  // Wait for 2 seconds
  console.log(`UUT: mainFunction completed at ${new Date().toISOString()}`);
}

export const UUT = {
  mainFunction,
  subFunction
};