Online version at https://danielsharkov.github.io/PatternVisualizer/
npm run devNavigate to localhost:5000. You should see your app running. Edit a component file in src, save it, and reload the page to see your changes.
By default, the server will only respond to requests from localhost. To allow connections from other computers, edit the sirv commands in package.json to include the option --host 0.0.0.0.