The following command will start the development server which communicates with a DHIS2 instance (make sure to run yarn install first).

npm start

You will need to add http:https://localhost:8081 url to your DHIS2 CORS whitelist (this can be done in the settings app).

{
  "activities": {
    "dhis": {
      "href": "http:https://localhost:8080/dhis"
    }
  }
}

To build a production version of the application run the following command.

npm run build