@tanstack/router-core/dist/esm/ssr/createRequestHandler.js

Modern and scalable routing for React applications

import { mergeHeaders } from "./headers.js";
import { attachRouterServerSsrUtils, getNormalizedURL, getOrigin } from "./ssr-server.js";
import { createMemoryHistory } from "@tanstack/history";
//#region src/ssr/createRequestHandler.ts
function createRequestHandler({ createRouter, request, getRouterManifest }) {
	return async (cb) => {
		const router = createRouter();
		let cbWillCleanup = false;
		try {
			attachRouterServerSsrUtils({
				router,
				manifest: await getRouterManifest?.()
			});
			const { url } = getNormalizedURL(request.url, "http://localhost");
			const origin = getOrigin(request);
			const history = createMemoryHistory({ initialEntries: [url.href.replace(url.origin, "")] });
			router.update({
				history,
				origin: router.options.origin ?? origin
			});
			await router.load();
			await router.serverSsr?.dehydrate();
			const responseHeaders = getRequestHeaders({ router });
			cbWillCleanup = true;
			return cb({
				request,
				router,
				responseHeaders
			});
		} finally {
			if (!cbWillCleanup) router.serverSsr?.cleanup();
		}
	};
}
function getRequestHeaders(opts) {
	const matchHeaders = opts.router.state.matches.map((match) => match.headers);
	const { redirect } = opts.router.state;
	if (redirect) matchHeaders.push(redirect.headers);
	return mergeHeaders({ "Content-Type": "text/html; charset=UTF-8" }, ...matchHeaders);
}
//#endregion
export { createRequestHandler };

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