How SSR Worked Before React 19

Before React-19 version we can use ssr in react with the help of manual setup of node+reactDOM server. import ReactDOMServer from 'react-dom/server' const html = ReactDOMServer.renderToString() following: Render React components to HTML on the server Send the HTML to the browser Hydrate it using ReactDOM.hydrate() From React 18, we could also use: renderToPipeableStream() (streaming SSR) renderToReadableStream() (for edge runtimes)