title: How to decrease size of vendor.js in angular 2,4,6,7,8,9,10?
body: <p>Angular CLI creates <code>vendor.js</code> and I don't know Why and What is the use of it?? Size of this file is about <strong>3.2MB</strong> for a new app!!</p>
  
  <p>Does this file contains <em>Angular 6 Javascript Source</em>?</p>
  
  <p>Don't you think this is big file for loading on internet on low speed connections?</p>