No more tweets

nomoretweets.js

// ==UserScript==
// @name         No More Tweets
// @namespace    https://twitter.com/kosugi
// @version      0.1
// @description  NO MORE TWEETS
// @match        https://twitter.com/*
// @grant        none
// ==/UserScript==

const moreTweetsContents = ({en: ['More Tweets', 'Discover more'], ja: ['その他のツイート', 'もっと見つける']})[document.querySelector('html').lang];

let flags = 0;

function doIt() {

    const candidates = Array.from(document.querySelectorAll('div[data-testid="cellInnerDiv"]'));

    const target = (() => {
        for (const e of candidates) {
            const span = e.querySelector('h2[aria-level="2"][role="heading"] span');
            if (span && moreTweetsContents.includes(span.textContent)) {
                return e;
            }
        }
    })();
    if (!target || window.innerHeight < target.getBoundingClientRect().top) {
        flags = 0;
        return 1000;
    }

    const numProceeds = candidates.reduce(([num, isAfter], e) => {
        if (e === target) {
            isAfter = true;
            e.style.visibility = 'hidden';
        }
        else if (isAfter && e.style.display !== 'none') {
            ++num;
            e.style.display = 'none';
        }
        return [num, isAfter];
    }, [0, false]);
    flags = 0xF & (flags * 2 + (numProceeds === 0));
    return (flags === 0xF) ? 1000 : 100;
}

(function onInterval() { setTimeout(onInterval, doIt()); })();