Oh sorry, I should have been a bit clearer. I just meant copy their code and include it alongside the code you’ve written for your component. If you use the dash-component-boilerplate then this will be in src/lib/components, so you could put the PlaidAuthenticator definition in something like src/lib/private/PlaidAuthenticator.js and then in your LoginForm file add something like
import PlaidAuthenticator from '../private/PlaidAuthenticator';
It just can’t go in the components/ folder otherwise the Dash component generator will try to make it into a component which you maybe don’t want?