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Verify staged lazy loading and record Phase 3 measurements

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This commit is contained in:
Jonathan Sykes
2026-10-08 04:19:02 +08:00
parent fab444b7b8
commit b84050578b
12 changed files with 5462 additions and 46 deletions
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5
perf/migration.mjs
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@@ -153,6 +153,9 @@ async function run(name) {
assert.equal(banners, 1, 'no banner after applying the current build');
assert.equal(await oldTab.evaluate(async()=>await (await fetch('/app.js')).text()),oldBytes,'open legacy tab keeps N-1 plain assets');
await oldTab.close();
// Phase 3 commits core + layout first; idle warming must fill the retained full shell before offline feature checks.
await page.evaluate(()=>Lazy.warm());
await waitAsync(page,async files=>{const cache=await caches.open('ytplayer-assets');return (await Promise.all(Object.keys(files).map(async path=>{const response=await cache.match(path+'?v='+files[path].h);return !!response&&response.headers.get('X-Asset-Hash')===files[path].h;}))).every(Boolean);},Object.fromEntries(shell.map(path=>[path==='/'?'/index.html':path,manifest.files[path==='/'?'/index.html':path]])));
const cacheResult = await page.evaluate(async ({ tag, shell, files }) => {
const cache = await caches.open('ytplayer-assets');
const missing = [], incorrect = [];
@@ -231,5 +234,5 @@ async function run(name) {
try {
const results = [];
for (const name of browserName === 'all' ? ['chromium', 'webkit'] : [browserName]) results.push(await run(name));
writeFileSync(join(repo, `perf/results/phase2-migration-${profile}-2026-10-07.json`), JSON.stringify({ commit, results }, null, 2) + '\n');
writeFileSync(join(repo, `perf/results/phase3-migration-${profile}-2026-10-08.json`), JSON.stringify({ commit, results }, null, 2) + '\n');
} finally { rmSync(scratch, { recursive: true, force: true }); }