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// The post button is on screen the moment the feed is, while the page is
// still sliding in. It is position: fixed, and it used to be rendered inside
// the page — whose entrance animation puts a transform on it, which makes
// fixed descendants position within the page: the button rode at the foot
// of the feed card, below the screen, until the animation ended (measured
// on a phone: 4109 px down at 87 ms, in place at 562 ms). Now the shell
// paints it beside the page.
// Run: bun tools/feed-fab-anim-test.js
import assert from 'node:assert/strict';
import puppeteer from './puppeteer.js';
import { generateMnemonic } from '@scure/bip39';
import { wordlist } from '@scure/bip39/wordlists/english';
import { buildHtml } from '../build.js';
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
const html = await buildHtml({ minify: true, pwa: false });
const server = Bun.serve({ port: 0, fetch: (req) => {
const p = new URL(req.url).pathname;
if (p === '/verify-worker.js' || p.startsWith('/punks')) return new Response(Bun.file('dist' + p));
return new Response(html, { headers: { 'content-type': 'text/html' } });
} });
const browser = await puppeteer.launch({ executablePath: '/usr/bin/google-chrome', headless: 'new', args: ['--no-sandbox'] });
const account = { id: 'fab-test', label: 'Fab', type: 'full', mnemonic: generateMnemonic(wordlist), passphrase: '', network: 'regtest', persisted: true };
try {
const page = await browser.newPage();
const errors = [];
page.on('pageerror', (e) => errors.push(e.message));
await page.setViewport({ width: 390, height: 844, isMobile: true, hasTouch: true });
await page.evaluateOnNewDocument((account) => {
localStorage.setItem('btc-wallet-network', 'regtest');
sessionStorage.setItem('btc-wallet-accounts', JSON.stringify({ accounts: [account], activeId: account.id }));
}, account);
await page.goto(server.url.origin + '/', { waitUntil: 'domcontentloaded' });
await page.waitForSelector('.app-bottom-nav', { timeout: 20000 });
await sleep(1500);
const tap = (which) => page.evaluate((which) => new Promise((resolve) => {
const b = [...document.querySelectorAll('.app-bottom-nav button')].find((x) => new RegExp(which, 'i').test(x.textContent));
const t0 = performance.now(); const samples = [];
const tick = () => {
const f = document.querySelector('.feed-post-fab'); const ms = Math.round(performance.now() - t0);
if (f) { const r = f.getBoundingClientRect(); samples.push({ ms, top: Math.round(r.top), right: Math.round(innerWidth - r.right), anim: !!document.querySelector('.anim-page'), inPage: !!f.closest('.anim-page, .feed-page') }); }
if (ms < 320) requestAnimationFrame(tick); else resolve(samples);
};
b.click(); requestAnimationFrame(tick);
}), which);
for (const round of [1, 2]) {
await tap('wallet'); await sleep(900);
const s = await tap('feed');
assert.ok(s.length >= 5, 'the button was sampled while the page slid in: ' + s.length);
const first = s[0];
assert.ok(first.anim, 'the page was still animating at the first sample (' + first.ms + ' ms)');
assert.ok(!first.inPage, 'the button is painted beside the page, not inside it');
const off = s.filter((x) => x.top > 844 - 40 || x.top < 0);
assert.equal(off.length, 0, `the button sat off screen in ${off.length} of ${s.length} frames: ` + JSON.stringify(s.slice(0, 4)));
console.log(`✓ round ${round}: the post button is on screen from the first frame (top ${first.top}px at ${first.ms} ms, ${s.length} frames sampled)`);
}
assert.deepEqual(errors, []);
console.log('✓ no page errors');
} finally { await browser.close(); server.stop(true); }
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