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feat(bankai): Phase 4 follow-ups — css convention, live titles, prerender, HTTP/2, size budget

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- style.css convention: <entry dir>/style.css is imported by the virtual
  client entry (CSS is a client concern; server code never sees it — the
  v8 answer to sheetify), extracted and hashed by Vite, stylesheet-linked
  in the head and preloaded via Early Hints. Counter example styled.
- SSR <title> from state: the server reads the first stream chunk before
  writing the head, by which point stores and the first render slice have
  run — DOMTitleChange emits land in the document title. Counter emits.
- bankai build --prerender /,/about renders routes through the same
  toStream path to static <route>/index.html (precompressed, precached
  by the service worker, served with Early Hints).
- bankai serve --h2: HTTP/2 with a generated local cert (openssl,
  cached; allowHTTP1) — browsers only act on Early Hints over h2/h3.
  Tested with a real h2 client observing the 103 interim response.
- npm run size: the framework wire-size budget, enforced in CI. Whole
  framework (core + html engine + morph + hydrate) is 7.97 kB min+gzip /
  7.15 kB brotli; budget 8.5 kB with the v7 '4kb' context documented
  (that number excluded the html engine, which lived in the browserify
  transform).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014NgfSjHE11oFpoSnLVKLXd
This commit is contained in:
Bendik Aagaard Lynghaug
2026-09-08 19:39:25 +02:00
co-authored by Claude Fable 5
parent 0a351d7f33
commit 99f9da1e3b
11 changed files with 305 additions and 37 deletions
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examples/counter/app.js
+2
View File
@@ -17,6 +17,8 @@ export default function createApp () {
}
function mainView (state, emit) {
emit(state.events.DOMTITLECHANGE, `count is ${state.count}`)
return html`
<body>
<h1>count is ${state.count}</h1>
examples/counter/style.css
+29
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@@ -0,0 +1,29 @@
/* The style.css convention: bankai's client entry imports this file
automatically (CSS is a client concern — server code never sees it),
Vite extracts and hashes it, and the server preloads it via Early
Hints. The v8 answer to sheetify. */
body {
font-family: system-ui, sans-serif;
max-width: 36rem;
margin: 4rem auto;
padding: 0 1rem;
line-height: 1.5;
}
h1 {
font-size: 1.6rem;
}
button {
font: inherit;
padding: 0.4rem 1.2rem;
border: 2px solid currentColor;
border-radius: 4px;
background: transparent;
cursor: pointer;
}
button:hover {
background: #ffc0cb55;
}