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GMRequireChecker

Require this script and you will get variable GMRequireChecker equals to true if loaded. In other cases, variable GMRequireChecker will just not exists.

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/429557/951692/GMRequireChecker.js 

// ==UserScript==
// @name         GMRequireChecker
// @namespace    GMRequireChecker
// @version      0.1
// @description  Require this script and you will get variable GMRequireChecker equals to true if loaded. In other cases, variable GMRequireChecker will just not exists.
// @author       PY-DNG
// @match        *
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==

const GMRequiredJSLoaded = true;