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| 1 | +import { isbot } from 'isbot'; |
| 2 | +import { renderToReadableStream } from 'react-dom/server'; |
| 3 | +import type { AppLoadContext, EntryContext } from 'react-router'; |
| 4 | +import { ServerRouter } from 'react-router'; |
| 5 | + |
| 6 | +export default async function handleRequest( |
| 7 | + request: Request, |
| 8 | + responseStatusCode: number, |
| 9 | + responseHeaders: Headers, |
| 10 | + routerContext: EntryContext, |
| 11 | + _loadContext: AppLoadContext, |
| 12 | +) { |
| 13 | + let shellRendered = false; |
| 14 | + const userAgent = request.headers.get('user-agent'); |
| 15 | + |
| 16 | + const body = await renderToReadableStream( |
| 17 | + <ServerRouter context={routerContext} url={request.url} />, |
| 18 | + { |
| 19 | + onError(error: unknown) { |
| 20 | + // biome-ignore lint: intentional parameter reassignment |
| 21 | + responseStatusCode = 500; |
| 22 | + // Log streaming rendering errors from inside the shell. Don't log |
| 23 | + // errors encountered during initial shell rendering since they'll |
| 24 | + // reject and get logged in handleDocumentRequest. |
| 25 | + if (shellRendered) { |
| 26 | + console.error(error); |
| 27 | + } |
| 28 | + }, |
| 29 | + }, |
| 30 | + ); |
| 31 | + shellRendered = true; |
| 32 | + |
| 33 | + // Ensure requests from bots and SPA Mode renders wait for all content to load before responding |
| 34 | + // https://react.dev/reference/react-dom/server/renderToPipeableStream#waiting-for-all-content-to-load-for-crawlers-and-static-generation |
| 35 | + if ((userAgent && isbot(userAgent)) || routerContext.isSpaMode) { |
| 36 | + await body.allReady; |
| 37 | + } |
| 38 | + |
| 39 | + responseHeaders.set('Content-Type', 'text/html'); |
| 40 | + return new Response(body, { |
| 41 | + headers: responseHeaders, |
| 42 | + status: responseStatusCode, |
| 43 | + }); |
| 44 | +} |
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