使用lodash/underscore的网站在Opera中失效的排查与解决求助

不知为何，Opera某次更新后，我近一周都被这个问题折腾——StreamTime、用Elementor搭建的WordPress站点这类生产力网站，在Opera里完全没法正常运行。

已经定位到问题根源：这些网站都用到了Underscore库（可能也混了Lodash），报错全集中在_.findWhere、_.pluck这类常用函数上。

我试过用TamperMonkey写猴子补丁，但Opera里导致问题的因素，明显比我注入原生垫片的速度更快，补丁根本赶不上覆盖。以下是我当前的TamperMonkey脚本：

// ==UserScript==
// @name         Fix issues with Opera Compatibility.
// @namespace    https://www.hazrpg.co.uk
// @version      0.1
// @description  Trying to fix an opera issue that causes _.pluck and _.findWhere to not work.
// @author       hazrpg
// @match        https://*.app.streamtime.net/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=streamtime.net
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    'use strict';

    console.log('Fixing opera issues...');

    let underscoreSrc_v1_13_6 = `
        if (typeof _ !== 'undefined' || typeof _ === 'function') {
            console.log('Looks like its already there jim, but lets shim shim shim!');

            // The '_' variable is already defined
            // You can now define your custom _.findWhere function
            _.findWhere = function (array, criteria) {
                //console.log('shimmed _.findWhere');
                return array.find(item => Object.keys(criteria).every(key => item[key] === criteria[key]))
            };
            _.pluck = function (collection, propertyName) {
                //console.log('shimmed _.pluck');
                return collection.map(item => item[propertyName]);
            };
        } else {
            console.log('Looks like we need to shimmy for Opera!');

            // The '_' variable is not defined
            // You can create your own namespace and define _.findWhere in it
            var _ = {
                findWhere: function (array, criteria) {
                    //console.log('shimmed _.findWhere');
                    return array.find(item => Object.keys(criteria).every(key => item[key] === criteria[key]))
                },
                pluck: function (collection, propertyName) {
                    //console.log('shimmed _.pluck');
                    return collection.map(item => item[propertyName]);
                },
            };
        }
    `;

    // Create a new script element for Underscore library
    var underscoreScript = document.createElement('script');
    //underscoreScript.src = 'https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.13.6/underscore-min.js';  // Adjust the URL as needed
    //underscoreScript.async = true;
    underscoreScript.textContent = underscoreSrc_v1_13_6;

    // Listen for the DOMContentLoaded event to inject the Underscore library
    document.addEventListener('DOMContentLoaded', function() {
        document.head.appendChild(underscoreScript);
    });

})();

我还试过用setTimeout设置50毫秒延迟来强制注入垫片，但覆盖它的操作速度更快，而且我不想把延迟设得低于50毫秒。

求各位提供其他解决思路？

内容的提问来源于stack exchange，提问作者hazrpg