[UserScript] Display RT time in tweet

RTTimeDisplay.js

{
// ==UserScript==
// @name		RT Time Display
// @version		6
// @description	RTされた時間を表示します。
// @author		silver-mixer
// @match		https://twitter.com/*
// @grant		none
// @run-at      document-start
// ==/UserScript==
const NAME = "RT Time Display";
const VERSION = 6;
try{
	let rtdata = {};
	let oXHROpen = XMLHttpRequest.prototype.open;
	let oXHRSend = XMLHttpRequest.prototype.send;
	XMLHttpRequest.prototype.open = function(){
		this.openMethod = arguments[0];
		this.openURL = arguments[1];
		oXHROpen.apply(this, arguments);
	};
	XMLHttpRequest.prototype.send = function(){
		let isTL = /\/[a-zA-Z0-9_]+\.json/.test(this.openURL) && this.openURL.indexOf('/timeline/') !== -1;
		let isUTL = /graphql\/[a-zA-Z0-9-_]+\/UserTweets/.test(this.openURL);
		if(isTL || isUTL){
			console.log(isTL, isUTL, this.openURL);
			this.addEventListener('load', () => {
				if(this.status === 200){
					let data = JSON.parse(this.responseText);
					if(isTL){
						let tweets = data.globalObjects.tweets;
						Object.keys(tweets).forEach(tid => {
							if('retweeted_status_id_str' in tweets[tid]){
								let date = new Date(Number((BigInt(tweets[tid].id_str) >> 22n) + 1288834974657n));
								let dateStr = date.getFullYear() + '年' +
										(date.getMonth() + 1) + '月' +
										date.getDate() + '日' +
										('0' + date.getHours()).slice(-2) + ':' +
										('0' + date.getMinutes()).slice(-2) + ':' +
										('0' + date.getSeconds()).slice(-2) + '.' +
										('00' + date.getMilliseconds()).slice(-3);
								rtdata[tweets[tid].retweeted_status_id_str] = dateStr;
							}
						});
					}else if(isUTL){
						let tweets = data.data.user.result.timeline.timeline.instructions[0].entries;
						Object.keys(tweets).forEach(i => {
							if(tweets[i].content.entryType === 'TimelineTimelineItem' && 'retweeted_status_result' in tweets[i].content.itemContent.tweet_results.result.legacy){
								console.log(tweets[i]);
								let rtid = tweets[i].sortIndex;
								let tid = tweets[i].content.itemContent.tweet_results.result.legacy.retweeted_status_result.result.rest_id;
								let date = new Date(Number((BigInt(rtid) >> 22n) + 1288834974657n));
								let dateStr = date.getFullYear() + '年' +
										(date.getMonth() + 1) + '月' +
										date.getDate() + '日' +
										('0' + date.getHours()).slice(-2) + ':' +
										('0' + date.getMinutes()).slice(-2) + ':' +
										('0' + date.getSeconds()).slice(-2) + '.' +
										('00' + date.getMilliseconds()).slice(-3);
								rtdata[tid] = dateStr;
							}
						});
					}
				}
			});
		}
		oXHRSend.apply(this, arguments);
	};
	new MutationObserver(mutations => {
		mutations.forEach(mutation => {
			let tl = mutation.target.parentNode;
			if(tl && tl.hasAttribute('aria-label') && tl.getAttribute('aria-label').indexOf('タイムライン') === 0){
				mutation.addedNodes.forEach(node => {
					let timeElem = node.querySelector('time');
					if(timeElem !== null && timeElem.parentNode !== null && timeElem.parentNode.tagName === 'A'){
						let id = timeElem.parentNode.href.match(/\/([0-9]+)($|\?)/)[1];
						if(id in rtdata){
							let tweetElem = timeElem.parentNode;
							while(tweetElem !== null && tweetElem.tagName !== 'HTML'){
								if(tweetElem.tagName === 'ARTICLE')break;
								tweetElem = tweetElem.parentNode;
							}
							let aLabelElem = tweetElem.querySelector('a');
							if(aLabelElem.href.match(/twitter\.com\/[a-zA-Z0-9_]+$/)){
								aLabelElem.appendChild(document.createTextNode('Retweeted at ' + rtdata[id]));
							}
						}
					}
				});
			}
		});
	}).observe(document.body, {
		childList: true,
		subtree: true
	});
}catch(e){
	console.error(`Error at "${NAME}" v${VERSION}\n`, e);
}}

RT Time Display

簡易バージョン履歴

v6 ユーザTLで動作しなくなったバグを修正
v5 ユーザTLで動作しなくなったバグを修正
v4 新Twitter用に修正/Tampermonkey向けにヘッダコメントを付与/公開
v3 バグ修正(非公開)
v2 バグ修正(非公開)
v1 旧Twitter用に作成(非公開)