the node.js server using the <code>PageRenderer</code> class API, and then send the result back to the browser.</p><p>For example, in <code>src/server/routes.ts</code>, declare a fastify plugin to register a route that render the page with the <code>Hello</code> SubApp on it.</p><div class="language-ts codeBlockContainer_Op_Y theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_aGc1"><pre tabindex="0" class="prism-code language-ts codeBlock_QQ5Q thin-