Is it possible to protect js code from outside interference?

Question

JavaScript

Angular 2 does a great job of protecting code by compiling logic and styles into bundled compressed files.
Simple browser JS can be compressed in the same way, making life difficult for outsiders.
Is there a similar solution for Node.js?

Answer 1

The minifier and obuffscator are independent of the JS content. Those. what goes for minification/obfuscation of the "front" JS will also go for the "back"

Answer 2

https://github.com/javascript-obfuscator/javascript...
API, CLI, web interface, whatever.
and a bunch of plugins for build systems https://github.com/javascript-obfuscator/

Answer 3

var el = document.getElementById('col');
if (el) {
  el.classList.add('some-class');
}

var el = document.getElementById('col');
if (el) {
  var otherEl = document.getElementById('other-id');
  if (otherEl) {
    otherEl.classList.add('some-class');
  }
}