node.js: mailparser not working

I want to parse an email and found mailparser package. (installed it using "npm install mailparser"). i'm using windows 7. i'm trying to run the simple example but the "end" event is not called and i don't see any logs. this is what i run:

const MailParser = require("mailparser").MailParser;
const mailparser = new MailParser({debug: true});

let email = "From: 'Sender Name' <sender@example.com>\r\n"+
    "To: 'Receiver Name' <receiver@example.com>\r\n"+
    "Subject: Hello world!\r\n"+
    "\r\n"+
    "How are you today?";

// setup an event listener when the parsing finishes
mailparser.on("end", function(mail_object){
    console.log("From:", mail_object.from); //[{address:'sender@example.com',name:'Sender Name'}]
    console.log("Subject:", mail_object.subject); // Hello world!
    console.log("Text body:", mail_object.text); // How are you today?
});

// send the email source to the parser
mailparser.write(email);
mailparser.end();

What am i doing wrong? Thx

According to the fine manual, there's only two events: headers and data.

Perhaps it's easiest to use the simpleParser instead of the lower-level (event-driven) MailParser:

const simpleParser = require('mailparser').simpleParser;
...
simpleParser(email).then(function(mail_object) {
  console.log("From:", mail_object.from.value);
  console.log("Subject:", mail_object.subject);
  console.log("Text body:", mail_object.text);
}).catch(function(err) {
  console.log('An error occurred:', err.message);
});