69 lines
2.3 KiB
TypeScript
69 lines
2.3 KiB
TypeScript
import { PassThrough } from "node:stream";
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import type { AppLoadContext, EntryContext } from "react-router";
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import { createReadableStreamFromReadable } from "@react-router/node";
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import { ServerRouter } from "react-router";
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import { isbot } from "isbot";
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import type { RenderToPipeableStreamOptions } from "react-dom/server";
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import { renderToPipeableStream } from "react-dom/server";
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export const streamTimeout = 5_000;
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export default function handleRequest(
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request: Request,
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responseStatusCode: number,
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responseHeaders: Headers,
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routerContext: EntryContext,
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loadContext: AppLoadContext
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) {
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return new Promise((resolve, reject) => {
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let shellRendered = false;
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let userAgent = request.headers.get("user-agent");
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// Ensure requests from bots and SPA Mode renders wait for all content to load before responding
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// https://react.dev/reference/react-dom/server/renderToPipeableStream#waiting-for-all-content-to-load-for-crawlers-and-static-generation
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let readyOption: keyof RenderToPipeableStreamOptions =
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(userAgent && isbot(userAgent)) || routerContext.isSpaMode
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? "onAllReady"
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: "onShellReady";
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const { pipe, abort } = renderToPipeableStream(
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<ServerRouter context={routerContext} url={request.url} />,
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{
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[readyOption]() {
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shellRendered = true;
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const body = new PassThrough();
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const stream = createReadableStreamFromReadable(body);
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responseHeaders.set("Content-Type", "text/html");
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resolve(
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new Response(stream, {
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headers: responseHeaders,
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status: responseStatusCode,
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})
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);
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pipe(body);
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},
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onShellError(error: unknown) {
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reject(error);
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},
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onError(error: unknown) {
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responseStatusCode = 500;
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// Log streaming rendering errors from inside the shell. Don't log
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// errors encountered during initial shell rendering since they'll
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// reject and get logged in handleDocumentRequest.
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if (shellRendered) {
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console.error(error);
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}
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},
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}
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);
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// Abort the rendering stream after the `streamTimeout` so it has time to
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// flush down the rejected boundaries
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setTimeout(abort, streamTimeout + 1000);
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});
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}
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