This is a simple app that shows how to access the current user (which might be a Physician, Patient or RelatedPerson). Please see the code for details.
Install NodeJS, go to the app directory and run:
npm i
npm start
You should see something like
Starting up http-server, serving ./
Available on:
http://127.0.0.1:9090
http://10.23.49.21:9090
You can stop the server if needed using Ctrl+C.
At this point your Launch URI is http://127.0.0.1:9090/launch.html and your Redirect URI is http://127.0.0.1:9090. The easiest way to launch the app is to go to https://launch.smarthealthit.org, paste your launch url at the bottom and click "Launch". Alternatively, you can just click this link to launch: