how can i make sure that the format date will out put mm/dd/yyyy meaning 09/01/2024 vs 9/1/2024

let formatDate = format.format({
      value: portDateObject,
      type: format.Type.DATE,
    });
    return formatDate;
  }

format.format

will always use the preference of the current user or the system, so that function alone will never be a reliable way to get a consistent format. I generally use

moment.js

for date formatting/manipulation

i haven't used external library is it hard to import ?

Nope