@independentsoft/msg/examples/create-appointment.js

Outlook .msg file module

import * as msg from './../independentsoft/msg.js';
import * as fs from 'fs';

let appointment = new msg.Message()
appointment.messageClass = "IPM.Appointment";
appointment.subject = "Test";
appointment.body = "Body text";
appointment.location = "My Office";
appointment.appointmentStartTime = new Date(2020,11,10,8,0,0);
appointment.appointmentEndTime = new Date(2020,11,10,10,0,0);

fs.writeFileSync("e:\\appointment.msg", appointment.toBytes());