Curseforge Quality of Life Fixes, NOW MOVED TO: https://github.com/comp500/Curseforge-Userscripts

cfqol.user.js

// ==UserScript==
// @name         Curseforge QOL Fixes
// @version      0.5
// @description  Fix Minecraft default tab to search mods, fix browse button to go to /minecraft/mc-mods, add search box in the navbar, add All Files tab
// @author       comp500
// @namespace    https://infra.link/
// @match        https://www.curseforge.com/*
// @updateURL    https://github.com/comp500/Curseforge-Userscripts/raw/master/cfqol.user.js
// @downloadURL  https://github.com/comp500/Curseforge-Userscripts/raw/master/cfqol.user.js
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';

    // Change the Browse link and the default Minecraft tab (from other links) to /minecraft/mc-mods
    let regexBrowse = /^http:\/\/bit.ly\/2Lzpfsl|https:\/\/www.curseforge.com\/minecraft\/?$/;
    Array.from(document.getElementsByTagName("a")).filter(a => regexBrowse.test(a.href)).forEach(a => {a.href = "https://www.curseforge.com/minecraft/mc-mods"});

    // Add a search box
    let searchBoxContainer = document.createElement("div");
    searchBoxContainer.className = "flex mr-4 items-center";
    searchBoxContainer.innerHTML = `<form action="/minecraft/mc-mods/search" method="get" novalidate="novalidate" autocomplete="false">
    <div class="flex flex-col h-full justify-between">
         <div class="input input--icon" style="color: #000">
            <i class="search textgray-900 flex items-center justify-center">
                <svg class="icon" viewBox="0 0 20 20" width="16" height="16"><use xlink:href="/Content/2-0-7166-24694/Skins/CurseForge/images/twitch/Object/Search.svg#Object/Search"></use></svg>
            </i>
            <input type="text" name="search" id="6" placeholder="Search Mods">
        </div>
    </div></form>`;
    let insertLocation = document.querySelector(".private-message");
    if (insertLocation != null) {
        // @Inject(method = "the navbar", at = @At("HEAD"))
        insertLocation.parentNode.insertBefore(searchBoxContainer, insertLocation);
    }

    // Add an "All Files" tab
    let pathMatches = /\/minecraft\/mc-mods\/([a-z][\da-z\-_]{0,127})/.exec(document.location.pathname);
    let files = document.getElementById("nav-files");
    if (pathMatches != null && pathMatches.length == 2 && files != null) {
        let slug = pathMatches[1];
        let allFiles = document.createElement("li");
        let isAllFilesPage = /\/minecraft\/mc-mods\/[a-z][\da-z\-_]{0,127}\/files\/all/.test(document.location.pathname);
        if (isAllFilesPage) {
            allFiles.className = "border-b-2 border-primary-500 b-list-item p-nav-item px-2 pb-1/10 -mb-1/10 text-gray-500";
            files.className = "b-list-item p-nav-item px-2 pb-1/10 -mb-1/10 text-gray-500";
        } else {
            allFiles.className = "b-list-item p-nav-item px-2 pb-1/10 -mb-1/10 text-gray-500";
        }
        allFiles.innerHTML = `<a href="/minecraft/mc-mods/${slug}/files/all" class="text-${isAllFilesPage ? "primary" : "gray"}-500 hover:no-underline">
            <span class="b-list-label">
                All Files
            </span>
        </a>`;
        files.parentNode.insertBefore(allFiles, files.nextSibling);
    }
})();

That's great. Thanks a lot.