How to authenticate user dropbox access in an Electron desktop app?

When making an Electron desktop app, the actual "website" is compiled to files that are bundled up inside the application bundle. As a result, there isn't a website url available as a redirect address to use for returning the authentication token back to the application (the app's urls are all "`file://`" types).

What is the right way to handle this situation? It's not a Cordova app, but should I be attempting to use the same redirect url & onLoad url token parsing logic as used in the dropbox `authenticateWithCordova` function in order to retrieve the token from a second browser window?

If not - how should this be handled properly?