Reduxjs is a very simple js library. So, create an index.html in your Desktop with this content
<html> <head> <script src="https://cdnjs.cloudflare.com/ajax/libs/redux/3.7.2/redux.js"></script> </head> <body> <div id="app"> </div> </body> </html>
Open the file in your browser. In your js console, as you type Re, it'd autocomplete as Redux. Meaning we have access to the redux class, let's use it.