cf24009e31
- sw.js + manifest.json: cache-first service worker for instant repeat-visit loads and full offline use. Registered only when window.CHESS_PWA is true. - Disabled by default: an active SW serves returning visitors from cache, so they'd stop hitting the server and disappear from the Fly logs. Enable at build time with --build-arg ENABLE_CHESS_PWA=1 (Dockerfile flips the flag); ENABLE_CHESS_PWA=1 make dev does the same locally. - scripts/bump_version.sh + 'make bump': bump the asset cache version across index.html (?v=N) and sw.js (CACHE) in sync. Required before deploy so the service worker / browser cache pick up changed assets. Bumped v25 -> v26. - README: document cache versioning + PWA flag.
38 lines
1.7 KiB
JavaScript
38 lines
1.7 KiB
JavaScript
// Lightweight static dev server for chess-pressure.
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// Serves src/chess_pressure/static/ at the root, matching the production
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// static-web-server layout. Files are read fresh per request, so editing a
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// JS/CSS/HTML file and refreshing the browser picks up changes immediately.
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//
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// bun run dev-server.js # serves http://0.0.0.0:8888
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// PORT=9000 bun run dev-server.js
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const ROOT = new URL("./src/chess_pressure/static/", import.meta.url).pathname;
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const PORT = Number(process.env.PORT || 8888);
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const PWA = process.env.ENABLE_CHESS_PWA === "1"; // mirror the Docker build flag
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Bun.serve({
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port: PORT,
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hostname: "0.0.0.0",
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async fetch(req) {
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let pathname = decodeURIComponent(new URL(req.url).pathname);
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if (pathname === "/" || pathname === "") pathname = "/index.html";
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// Strip leading slashes and neutralize any ".." path traversal.
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const rel = pathname.replace(/^\/+/, "").replace(/\.\.(\/|\\|$)/g, "");
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const file = Bun.file(ROOT + rel);
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if (!(await file.exists())) return new Response("Not found", { status: 404 });
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const headers = { "Cache-Control": "no-cache" };
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// Flip the PWA flag in index.html on the fly so `ENABLE_CHESS_PWA=1 make dev`
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// can exercise the service worker without editing source.
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if (PWA && rel === "index.html") {
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const html = (await file.text()).replace("window.CHESS_PWA = false", "window.CHESS_PWA = true");
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return new Response(html, { headers: { ...headers, "Content-Type": "text/html;charset=utf-8" } });
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}
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return new Response(file, { headers });
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},
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});
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console.log(
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`chess-pressure dev server → http://0.0.0.0:${PORT} (serving ${ROOT}) PWA=${PWA ? "on" : "off"}`,
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);
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