feat: minification serveur à la volée (terser + fallback Bun) et cache immutable

- import terser/Bun.Transpiler (fallback si terser indisponible)
- minifySrc(): CSS via regex, JS via terser.minify (compress+mangle) sinon source
- buildFileCache asynchrone, etag stable sha1(content), cache de minification hashé
- Cache-Control: html no-store, assets ?v= immutable 1 an, sinon must-revalidate

bun.lock

@@ -7,6 +7,7 @@
       "dependencies": {
         "marked": "^18.0.9",
         "sharp": "^0.35.3",
+        "terser": "^5.51.2",
         "wordpress-honeypot": "^1.1.2",
       },
       "devDependencies": {
@@ -74,12 +75,28 @@
 
     "@img/sharp-win32-x64": ["@img/sharp-win32-x64@0.35.3", "", { "os": "win32", "cpu": "x64" }, "sha512-D4y1vNeZrIIJCN+uHaWVtH86B+aCrdMYYjicy9pXHvbGZeGYLLSd3wdVuC37FxVXlU1ARsk84eKWfWMXGYEqvA=="],
 
+    "@jridgewell/gen-mapping": ["@jridgewell/gen-mapping@0.3.13", "", { "dependencies": { "@jridgewell/sourcemap-codec": "^1.5.0", "@jridgewell/trace-mapping": "^0.3.24" } }, "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA=="],
+
+    "@jridgewell/resolve-uri": ["@jridgewell/resolve-uri@3.1.2", "", {}, "sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw=="],
+
+    "@jridgewell/source-map": ["@jridgewell/source-map@0.3.11", "", { "dependencies": { "@jridgewell/gen-mapping": "^0.3.5", "@jridgewell/trace-mapping": "^0.3.25" } }, "sha512-ZMp1V8ZFcPG5dIWnQLr3NSI1MiCU7UETdS/A0G8V/XWHvJv3ZsFqutJn1Y5RPmAPX6F3BiE397OqveU/9NCuIA=="],
+
+    "@jridgewell/sourcemap-codec": ["@jridgewell/sourcemap-codec@1.6.0", "", {}, "sha512-T7jf+5zgsZHwNJ4lvQ7/aezbyk0nNX+zJVWpmHA7VYsEx7a7qr5Rg5IbtJFqkgze5Y2sruq1RUY8Q837Od7iFw=="],
+
+    "@jridgewell/trace-mapping": ["@jridgewell/trace-mapping@0.3.31", "", { "dependencies": { "@jridgewell/resolve-uri": "^3.1.0", "@jridgewell/sourcemap-codec": "^1.4.14" } }, "sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw=="],
+
     "@types/bun": ["@types/bun@1.3.14", "", { "dependencies": { "bun-types": "1.3.14" } }, "sha512-h1hFqFVcvAvD9j9K7ZW7vd82aSA+rTdznZa+5bwvCwqSB1jmmfLcbIWhOLx1/+boy/xmjgCs/OMUL8hRJSmnPw=="],
 
     "@types/node": ["@types/node@26.2.0", "", { "dependencies": { "undici-types": "~8.3.0" } }, "sha512-5IviulTZeRNp2vAJ514cc/HUlY5nZ9fCbq9DMyC52BrhFZACo3nI0R7qBxhQmo/d27NFe96ur/b7Wwxklda+kg=="],
 
+    "acorn": ["acorn@8.18.0", "", { "bin": { "acorn": "bin/acorn" } }, "sha512-lGq+9yr1/GuAWaVYIHRjvvySG5/4VfKIvC8EWxStPdcDh/Ka7FG3twP6v4d5BkravUilhIAsG4Qj83t02LWUPQ=="],
+
+    "buffer-from": ["buffer-from@1.1.2", "", {}, "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ=="],
+
     "bun-types": ["bun-types@1.3.14", "", { "dependencies": { "@types/node": "*" } }, "sha512-4N0ig0fEomHt5R0KCFWjovxow98rIoRwKolrYdCcknNwMekCXRnWEUvgu5soYV8QXtVsrUD8B95MBOZGPvr6KQ=="],
 
+    "commander": ["commander@2.20.3", "", {}, "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="],
+
     "detect-libc": ["detect-libc@2.1.2", "", {}, "sha512-Btj2BOOO83o3WyH59e8MgXsxEQVcarkUOpEYrubB0urwnN10yQ364rsiByU11nZlqWYZm05i/of7io4mzihBtQ=="],
 
     "marked": ["marked@18.0.9", "", { "bin": { "marked": "bin/marked.js" } }, "sha512-/Sa4qiiHZxf0/FQdBBowr9q4r10krCwMvpK48FUBdXdUXScDxiQGR9zCPrFgRVR5LU3iySOiIjy09ZQvADir1w=="],
@@ -88,6 +105,12 @@
 
     "sharp": ["sharp@0.35.3", "", { "dependencies": { "@img/colour": "^1.1.0", "detect-libc": "^2.1.2", "semver": "^7.8.5" }, "optionalDependencies": { "@img/sharp-darwin-arm64": "0.35.3", "@img/sharp-darwin-x64": "0.35.3", "@img/sharp-freebsd-wasm32": "0.35.3", "@img/sharp-libvips-darwin-arm64": "1.3.2", "@img/sharp-libvips-darwin-x64": "1.3.2", "@img/sharp-libvips-linux-arm": "1.3.2", "@img/sharp-libvips-linux-arm64": "1.3.2", "@img/sharp-libvips-linux-ppc64": "1.3.2", "@img/sharp-libvips-linux-riscv64": "1.3.2", "@img/sharp-libvips-linux-s390x": "1.3.2", "@img/sharp-libvips-linux-x64": "1.3.2", "@img/sharp-libvips-linuxmusl-arm64": "1.3.2", "@img/sharp-libvips-linuxmusl-x64": "1.3.2", "@img/sharp-linux-arm": "0.35.3", "@img/sharp-linux-arm64": "0.35.3", "@img/sharp-linux-ppc64": "0.35.3", "@img/sharp-linux-riscv64": "0.35.3", "@img/sharp-linux-s390x": "0.35.3", "@img/sharp-linux-x64": "0.35.3", "@img/sharp-linuxmusl-arm64": "0.35.3", "@img/sharp-linuxmusl-x64": "0.35.3", "@img/sharp-webcontainers-wasm32": "0.35.3", "@img/sharp-win32-arm64": "0.35.3", "@img/sharp-win32-ia32": "0.35.3", "@img/sharp-win32-x64": "0.35.3" }, "peerDependencies": { "@types/node": "*" }, "optionalPeers": ["@types/node"] }, "sha512-ej0zVHuZGHCiABXcNxeYhpRnPNPAcvbG8RMdBAhDAxLKkCRVSpK3Iyu7qbqw3JMzoj0REeM6f3tJLtVwl0023Q=="],
 
+    "source-map": ["source-map@0.6.1", "", {}, "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="],
+
+    "source-map-support": ["source-map-support@0.5.21", "", { "dependencies": { "buffer-from": "^1.0.0", "source-map": "^0.6.0" } }, "sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w=="],
+
+    "terser": ["terser@5.51.2", "", { "dependencies": { "@jridgewell/source-map": "^0.3.3", "acorn": "^8.15.0", "commander": "^2.20.0", "source-map-support": "~0.5.20" }, "bin": { "terser": "bin/terser" } }, "sha512-bWnjSNscmuI+GJze6ZupnHP8G/cTcsJF+bXCeQknk2SHQsgbNJnLrqiH9jZ2W4STPVXH2mDKKRX3iwPhc9Cn/Q=="],
+
     "tslib": ["tslib@2.8.1", "", {}, "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w=="],
 
     "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],

package.json

@@ -17,6 +17,7 @@
   "dependencies": {
     "marked": "^18.0.9",
     "sharp": "^0.35.3",
+    "terser": "^5.51.2",
     "wordpress-honeypot": "^1.1.2"
   }
 }

src/server.ts

@@ -15,11 +15,32 @@ import { docsPage } from "./docs"
 import { zmapWsHandler, zmapWsMessage, zmapWsClose, zmapWsKeepAlive } from "./zmap-ws"
 import { join, normalize } from "node:path"
 import { statSync, existsSync, readFileSync, writeFileSync, chmodSync, readdirSync } from "node:fs"
-import { randomBytes } from "node:crypto"
+import { randomBytes, createHash } from "node:crypto"
 import { spawn, execSync } from "node:child_process"
 import os from "node:os"
 
 type CachedFile = { data: Buffer; type: string; etag: string }
+
+let terser: typeof import("terser") | null = null
+try { terser = await import("terser") } catch {}
+
+let trans: import("bun").Transpiler | null = null
+try { trans = new Bun.Transpiler({ loader: "js", minify: { whitespace: true, syntax: true, semicolons: true } } as never) } catch {}
+
+const MINIFY_EXT = new Set([".js", ".mjs", ".css"])
+const minifyCache = new Map<string, { hash: string; data: Buffer }>()
+
+async function minifySrc(src: string, ext: string): Promise<string> {
+  try {
+    if (ext === ".css") {
+      return src.replace(/\/\*[\s\S]*?\*\//g, "").replace(/\s+/g, " ").replace(/\s*([{};:,])\s*/g, "$1").replace(/;}/g, "}").trim()
+    }
+    if (terser) return (await terser.minify(src, { compress: true, mangle: true, format: { comments: false } })).code || src
+    if (trans) return trans.transformSync(src)
+  } catch { /* en cas d'échec on garde la source lisible */ }
+  return src
+}
+
 let fileCache = new Map<string, CachedFile>()
 
 type ArticleLang = { title: string; ogTitle: string; description: string; body: string }
@@ -1059,27 +1080,40 @@ const types: Record<string, string> = {
   ".pdf": "application/pdf",
 }
 
-function buildFileCache() {
+async function buildFileCache() {
   const next = new Map<string, CachedFile>()
-  function walk(dir: string) {
+  async function walk(dir: string) {
     for (const entry of readdirSync(dir, { withFileTypes: true })) {
       const full = join(dir, entry.name)
-      if (entry.isDirectory()) { walk(full); continue }
+      if (entry.isDirectory()) { await walk(full); continue }
       try {
         const data = readFileSync(full) as Buffer
         const ext = full.slice(full.lastIndexOf(".")).toLowerCase()
         const rel = full.slice(root.length)
+        const hash = createHash("sha1").update(data).digest("hex")
+        let out = data
+        if (MINIFY_EXT.has(ext)) {
+          const cached = minifyCache.get(rel)
+          if (cached && cached.hash === hash) {
+            out = cached.data
+          } else {
+            const minified = await minifySrc(data.toString("utf8"), ext)
+            out = Buffer.from(minified)
+            minifyCache.set(rel, { hash, data: out })
+          }
+        }
         next.set(rel, {
-          data,
+          data: out,
           type: types[ext] ?? "application/octet-stream",
-          etag: `"${data.length}-${Date.now()}"`,
+          etag: `"${hash}"`,
         })
       } catch {}
     }
   }
-  walk(root)
+  await walk(root)
   fileCache = next
-  console.log(`[cache] ${fileCache.size} fichiers en RAM (${(process.memoryUsage().rss / 1048576).toFixed(0)} Mo RSS)`)
+  const saved = process.memoryUsage().rss / 1048576
+  console.log(`[cache] ${fileCache.size} fichiers en RAM (${saved.toFixed(0)} Mo RSS)`)
 }
 
 function startWatcher() {
@@ -1108,7 +1142,7 @@ function startWatcher() {
 }
 
 console.log(`Zektyc sert ${root} sur http://${host}:${port}`)
-buildFileCache()
+await buildFileCache()
 startWatcher()
 writeSitemaps(readArticles())
 
@@ -1201,10 +1235,15 @@ server = serve({
       const ifNoneMatch = req.headers.get("if-none-match")
       if (ifNoneMatch && ifNoneMatch === cached.etag) return new Response(null, { status: 304 })
       const isHtml = cached.type.startsWith("text/html")
+      const cacheControl = isHtml
+        ? "no-store"
+        : url.searchParams.has("v")
+          ? "public, max-age=31536000, immutable"
+          : "public, max-age=300, must-revalidate"
       return new Response(cached.data, {
         headers: {
           "Content-Type": cached.type,
-          "Cache-Control": isHtml ? "no-store" : "public, max-age=300",
+          "Cache-Control": cacheControl,
           "ETag": cached.etag,
         },
       })
@@ -1213,10 +1252,15 @@ server = serve({
     const f = file(filePath)
     if (await f.exists()) {
       const ext = filePath.slice(filePath.lastIndexOf(".")).toLowerCase()
+      const cacheControl = ext === ".html"
+        ? "no-cache"
+        : url.searchParams.has("v")
+          ? "public, max-age=31536000, immutable"
+          : "public, max-age=300, must-revalidate"
       return new Response(f, {
         headers: {
           "Content-Type": types[ext] ?? "application/octet-stream",
-          "Cache-Control": ext === ".html" ? "no-cache" : "public, max-age=300",
+          "Cache-Control": cacheControl,
         },
       })
     }