Facebook: Expand all "View ..." comments

FacebookExpandComments.js

// This script slowly but surely expands all comments of a Facebook post
// (pretty annoying Facebook doesn't have this feature with a single click)
// Manually select "All comments" before launching in the console
// The class selector will likely change
// I might update it with a more robust version someday
// Note that even this class selector is somehow not enough, so extra textContent filtering is used

let sleep = s => new Promise((resolve, _) => setTimeout(resolve, s * 1000));
let random = (min, max) => min + Math.random() * (max - min);

async function openOne() {
	let $viewAll = document.querySelectorAll('.x193iq5w.xeuugli.x13faqbe.x1vvkbs.x1xmvt09.x1lliihq.x1s928wv.xhkezso.x1gmr53x.x1cpjm7i.x1fgarty.x1943h6x.xudqn12.x3x7a5m.x6prxxf.xvq8zen.x1s688f.xi81zsa');
	$viewAll = [...$viewAll].filter(n => n.textContent.toLowerCase().startsWith('view'));
	if ($viewAll.length === 0)
		return false;
	$viewAll[0].scrollIntoViewIfNeeded();
	await sleep(random(1, 2.4));
	$viewAll[0].click();
	return true;
}

while (await openOne())
	await sleep(random(7, 12));
console.info('----- Done -----');