This is a bit modified version of the pure JS implementation of an OIDC client from Django OIDC Provider documentation.
Even though the content is static, it must be served via HTTP, because
browers don't allow redirects to file:// URLs. You can run the
http-server from npm to serve this by issuing:
npm install npm run serve
Then browse to http://localhost:3000 to check it out.
The original can be found from: