80 lines
5.1 KiB
JavaScript
80 lines
5.1 KiB
JavaScript
import assert from "node:assert/strict";
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import { readFileSync, readdirSync, statSync } from "node:fs";
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import { join } from "node:path";
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const distDirectory = join(process.cwd(), "apps", "web", "dist");
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const indexHtml = readFileSync(join(distDirectory, "index.html"), "utf8");
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const serviceWorker = readFileSync(join(distDirectory, "sw.js"), "utf8");
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const staticHeaders = readFileSync(join(distDirectory, "_headers"), "utf8");
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assert.match(serviceWorker, /edgeever-resource-blobs/, "PWA must provide a runtime cache for resource bytes");
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assert.match(serviceWorker, /CacheFirst/, "PWA resource bytes must use a cache-first runtime strategy");
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assert.match(serviceWorker, /edgeever-app-shell/, "PWA navigation must use a dedicated app-shell runtime cache");
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assert.match(serviceWorker, /NetworkFirst/, "PWA navigation must prefer the current deployment over cached HTML");
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assert.match(serviceWorker, /PrecacheFallbackPlugin/, "PWA navigation must retain an offline app-shell fallback");
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assert.doesNotMatch(serviceWorker, /NavigationRoute/, "PWA navigation must not always serve the precached HTML shell");
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assert.match(staticHeaders, /\/sw\.js\s+Cache-Control: no-cache, no-store, must-revalidate/, "Service worker updates must not use stale browser cache");
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assert.match(staticHeaders, /\/assets\/\*\s+Cache-Control: public, max-age=31536000, immutable/, "Fingerprinted assets must use immutable browser caching");
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const precacheStart = serviceWorker.indexOf("precacheAndRoute(");
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const precacheEnd = serviceWorker.indexOf("cleanupOutdatedCaches", precacheStart);
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assert.ok(precacheStart >= 0 && precacheEnd > precacheStart, "Web service worker must contain a precache manifest");
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const precacheManifest = serviceWorker.slice(precacheStart, precacheEnd);
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assert.doesNotMatch(precacheManifest, /\{url:"index\.html",/, "Current HTML must not be served by a cache-first precache route");
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assert.match(precacheManifest, /index\.html\?edgeever-offline-shell=/, "PWA must retain a versioned offline HTML shell");
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const optionalDiagramPattern = /(?:beautiful-mermaid|vendor-mermaid|mermaid\.core|[^"']*Diagram-)[^"']*\.js/;
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assert.doesNotMatch(precacheManifest, optionalDiagramPattern, "Optional diagram chunks must remain out of the initial PWA precache");
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assert.doesNotMatch(precacheManifest, /noto-sans-sc-[^"']*\.woff2/, "Print-only Noto Sans SC shards must remain out of the PWA precache");
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const precacheURLs = [...precacheManifest.matchAll(/\{url:"([^"]+)"/g)].map((match) => match[1]);
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const entryCount = precacheURLs.length;
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assert.ok(entryCount > 0, "Web service worker precache manifest must not be empty");
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const precacheBytes = precacheURLs
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.filter((url) => !url.startsWith("/") && !url.includes("?"))
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.map((url) => statSync(join(distDirectory, url)).size)
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.reduce((total, size) => total + size, 0);
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const PRECACHE_BUDGET = 5 * 1024 * 1024;
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assert.ok(precacheBytes <= PRECACHE_BUDGET, `PWA precache budget exceeded: ${precacheBytes} > ${PRECACHE_BUDGET}`);
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const modulePreloads = indexHtml.match(/<link rel="modulepreload"[^>]+>/g)?.join("\n") ?? "";
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const initialOptionalPattern = /vendor-code-highlight|vendor-D3|beautiful-mermaid|vendor-(?:mermaid|tiptap|prosemirror|floating)|ui-primitives|mermaid\.core|[^"']*Diagram-/;
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assert.doesNotMatch(modulePreloads, initialOptionalPattern, "Optional editor and diagram chunks must remain out of the initial HTML modulepreload list");
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const initialModulePreloadBytes = [...indexHtml.matchAll(/<link rel="modulepreload"[^>]+href="([^"]+)"[^>]*>/g)]
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.map((match) => statSync(join(distDirectory, match[1].replace(/^\//, ""))).size)
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.reduce((total, size) => total + size, 0);
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const INITIAL_MODULE_PRELOAD_BUDGET = 700 * 1024;
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assert.ok(initialModulePreloadBytes <= INITIAL_MODULE_PRELOAD_BUDGET, `Initial modulepreload budget exceeded: ${initialModulePreloadBytes} > ${INITIAL_MODULE_PRELOAD_BUDGET}`);
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const DEFAULT_CHUNK_WARNING_BYTES = 500 * 1024;
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const allowedLargeChunkPattern = /^(?:vendor-(?:beautiful-mermaid|mermaid-(?:layout|render))|.*Diagram-).*\.js$/;
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const largeChunks = readdirSync(join(distDirectory, "assets"))
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.filter((name) => name.endsWith(".js"))
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.map((name) => ({ name, size: statSync(join(distDirectory, "assets", name)).size }))
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.filter(({ size }) => size > DEFAULT_CHUNK_WARNING_BYTES);
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assert.ok(
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largeChunks.every(({ name }) => allowedLargeChunkPattern.test(name)),
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`Unexpected JavaScript chunks exceed 500 KiB: ${largeChunks
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.filter(({ name }) => !allowedLargeChunkPattern.test(name))
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.map(({ name, size }) => `${name} (${size})`)
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.join(", ")}`,
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);
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assert.ok(
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largeChunks.every(({ name }) => !modulePreloads.includes(name)),
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"Large optional diagram chunks must not be module-preloaded by the app entry",
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);
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assert.ok(
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largeChunks.every(({ name }) => !precacheManifest.includes(name)),
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"Large optional diagram chunks must not be included in the PWA precache",
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);
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console.log(JSON.stringify({
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ok: true,
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precacheEntries: entryCount,
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precacheBytes,
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precacheBudget: PRECACHE_BUDGET,
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initialModulePreloadBytes,
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initialModulePreloadBudget: INITIAL_MODULE_PRELOAD_BUDGET,
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largeDeferredChunks: largeChunks,
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resourceBytesCache: "cache-first",
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optionalDiagramChunksDeferred: true,
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optionalInitialChunksDeferred: true,
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}));
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