Simplified currency exchange converter made with react. You can insert amount of Polish zloty to see how much it is in USD, EUR and GBP. It is ensured that the user can type in numbers only. It cannot be taken seriously as ratios are takem arbitrary; however, there is a link to National Polish Bank intrnet site with on-line currencies exchange rates.
The settings used for this project are suitable for development only and very convenient for learning because they use in-browser babel compiler. They are not appropriate for production. The project was developed with http-server for verifying results.