Wikipedia Family Tree Crawler

\n {isLoading && (\n

\n )}\n \n Generations: {maxDepth}\n

\n View source\n

\n \n );\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")).render();\n}\n\nif (typeof document !== \"undefined\") {\n client();\n}\n\nasync function server(req: Request): Promise {\n const url = new URL(req.url);\n\n if (url.pathname === \"/stream\") {\n const wikiUrl = url.searchParams.get(\"url\");\n if (!wikiUrl) {\n return new Response(\"URL parameter is required\", { status: 400 });\n }\n\n const encoder = new TextEncoder();\n const stream = new ReadableStream({\n async start(controller) {\n for await (const data of crawlWikipedia(wikiUrl)) {\n controller.enqueue(encoder.encode(`data: ${JSON.stringify(data)}\\n\\n`));\n }\n controller.close();\n },\n });\n\n return new Response(stream, {\n headers: {\n \"Content-Type\": \"text/event-stream\",\n \"Cache-Control\": \"no-cache\",\n \"Connection\": \"keep-alive\",\n },\n });\n }\n\n return new Response(\n `\n \n \n \n \n \n Wikipedia Family Tree Crawler\n \n \n \n

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\"center\",\n \"text-wrap\": \"wrap\",\n \"text-max-width\": \"100px\",\n \"font-size\": \"10px\",\n \"width\": \"label\",\n \"height\": \"label\",\n \"padding\": \"10px\",\n },\n },\n {\n selector: \"edge\",\n style: {\n \"width\": 2,\n \"line-color\": \"#ccc\",\n \"target-arrow-color\": \"#ccc\",\n \"target-arrow-shape\": \"triangle\",\n \"curve-style\": \"bezier\",\n },\n },\n];\n\nexport default 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Code