Angular 6 Uncaught ReferenceError: Buffer is not defined

Ok, after an hour I finally managed to have cognito working on my Angular app (just after upgrading to 6.0).

About the message global is not defined (or something close can’t remember). Add the following into index.html:

<!doctype html>
<html lang="en">
<head>
  ...

  <script>
    var global = global || window;
  </script>
</head>

Then, you’ll probably get an error saying that Buffer is not defined.

Install the buffer package using npm or yarn. And add the following into polyfills.ts ():

global.Buffer = global.Buffer || require('buffer').Buffer;

Stackoverflow answers/github issues that helped me in case it’s not fixed for you after that: