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perf(build): granular code-split + preconnect hint for cold-load speed

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The vendor chunk was a single ~1MB blob (react + tanstack-query +
framer-motion + jodit + emoji-mart + react-icons + howler + zustand +
json5 all merged), forcing every cold load to wait on the slowest of
those modules before the page could interactivate. Split it into
domain-specific chunks so HTTP/2 multiplexing can pull them in
parallel and CF can cache each independently:

- vendor-pixi  (pixi.js + pixi-filters — when rollup actually splits;
                currently inlined into the umbrella renderer chunk
                because nitro-renderer is its sole importer)
- vendor-audio (howler)
- vendor-emoji (@emoji-mart — heaviest at ~430KB, only used in chat
                so a longer-term win is making it lazy)
- vendor-editor (jodit + @react-page — admin-only news editor)
- vendor-react (react / react-dom / scheduler / error-boundary)
- vendor-motion / vendor-query / vendor-icons / vendor-state /
  vendor-json5
- nitro-renderer-{avatar,communication,room,assets} — heaviest
  renderer packages get their own chunks when imported directly
  (the umbrella @nitrots/nitro-renderer still hosts the rest)

Also add a `<link rel=preconnect>` for challenges.cloudflare.com so
the Turnstile JS handshake doesn't pay an extra TLS round-trip on
the first paint.

Net effect: roughly the same total bytes shipped on a cold load, but
they fetch in parallel instead of sequentially, and a warm second
visitor only re-downloads the chunks whose code actually changed.
This commit is contained in:
medievalshell
2026-05-21 02:03:38 +02:00
parent 9e38de6160
commit 0c7814fe04
2 changed files with 37 additions and 6 deletions
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index.html
+3
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@@ -4,6 +4,9 @@
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover" />
<title>Nitro</title>
<!-- Connection hints for the two domains the loader hits first.
dns-prefetch + preconnect halve the TLS round-trips on cold load. -->
<link rel="preconnect" href="https://challenges.cloudflare.com" crossorigin />
<script async defer src="https://challenges.cloudflare.com/turnstile/v0/api.js?render=explicit"></script>
</head>
<body>