How to set up a basic Sinatra + React webapp

17-Jan-2025 11
Let's say you want to use Ruby for the backend of a basic webapp but React on the frontend. Here's how. (Note: All tested on January 13, 2025 with Ruby 3.3, Sinatra 4.1.1, and React 18.3. Configs may change over time.) First, create the app folder and set up Sinatra:.
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