ScrollLaunch — app walkthrough

export async function test(page, baseUrl, screenshotPath, stepLogger) {
  const shot = (n, slug) => screenshotPath.replace('.png', `-${n}-${slug}.png`);
  const SCROLL_THROUGH = "(async () => { const ease = t => 1 - Math.pow(1 - t, 3); const max = Math.max(0, document.body.scrollHeight - window.innerHeight); if (max < 40) return; const anim = (a, b, ms) => new Promise(res => { const t0 = performance.now(); const step = now => { const p = Math.min(1, (now - t0) / ms); window.scrollTo(0, a + (b - a) * ease(p)); p < 1 ? requestAnimationFrame(step) : res(); }; requestAnimationFrame(step); }); await anim(0, max, 1400); await new Promise(r => setTimeout(r, 350)); await anim(max, 0, 800); })()";

  await page.context().setExtraHTTPHeaders({ 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36' });
  await page.route('**/cdn-cgi/scripts/**', function (r) { r.abort(); }).catch(function () {});
  await page.route('**/connect.facebook.net/**', function (r) { r.abort(); }).catch(function () {});

  // ─── Scenario 1: public home (context) ────────────────────────────────────
  stepLogger.log('Scenario 1: Public launch feed');
  await page.goto(baseUrl + '/', { waitUntil: 'domcontentloaded' });
  await page.waitForLoadState('networkidle', { timeout: 4000 }).catch(function () {});