facebook-timeline-cleaner.js

function delay(n) {
    return new Promise(accept => setTimeout(() => accept(), n));
}
async function cleanUp() {
    let xs = Array.from(document.querySelectorAll('[aria-label=Edit]')).slice(0, 10);
    console.log(xs);
    xs.forEach(n => n.click());
    
    await delay(1000);
    
    let ys = document.querySelectorAll('[rel=async-post][ajaxify^="/ajax/timeline/delete/confirm"]');
    console.log(ys);
    ys.forEach(n => n.click());
    
    await delay(5000);
    
    for (let n of document.querySelectorAll('form[action^="/ajax/timeline/delete"] [type=submit]')) {
        n.click();
        await delay(500);
    }

    for (let x of xs) {
        document.querySelector(`[data-ownerid=${x.id}]`).remove();
        x.remove();
    }

    document.querySelectorAll('.uiLayer').forEach(n => n.remove());

    window.scrollTo(0, document.body.scrollHeight);
    await delay(1000);
    
    let loader = document.querySelector('[ajaxify^="/ajax/timeline/all_activity/scroll.php"]');
    if (loader) loader.click();

    await delay(1000);

    await cleanUp();

}
cleanUp();