Is there a way to generate Filestack's security token in React?

Question

I am trying to use filestack's file picker in my React app. I have the API key, but when I am trying to run getSecurity() via the Frontend code, I am getting an error saying that this function get only be run in Node env.

Any suggestions how one can get security related token (signature & policy) via React.js code? without using a server

Thanks!