Nodejs) Converting (Raw Binary Data) into (base64 format) !

Hello. Can anyone please convert the variable 'result' in the code below, to base64 format? Notes : 1) 3rd party pakage 'puppeteer' will be needed. Condition : 1) When it's converted to base64, it should be able to be shown as jpg image output in this link. [login to view URL] I will be deeply appreciated! Thanks :) // /* 20190208 Newly Acquitred Standard... const puppeteer = require('puppeteer'); (async () => { const browser = await [login to view URL](); const page = await [login to view URL](); [login to view URL]('response', response => { [login to view URL]().then( function(result) { [login to view URL](result); }); }); await [login to view URL]('[login to view URL]); })(); // */