tampermonkey.net script to mark vendor files as viewed in GitHub PRs

mark_vendor_viewed.user.js

// ==UserScript==
// @name        mark_vendor_viewed
// @description Mark all vendor files as viewed in PRs
// @author      David Miguel
// @version     1.0
// @namespace   https://github.com/davidmigloz
// @match       *://github.com/*/*/pull/*/files
// ==/UserScript==
(() => {
    const markVendorBtn = document.createElement('button')
    markVendorBtn.textContent = "Mark Vendor Files"
    markVendorBtn.style.marginLeft = '12px'
    markVendorBtn.classList.add('btn', 'btn-sm')

    const toolbar = document.querySelector('.pr-review-tools')
    toolbar.prepend(markVendorBtn)

    markVendorBtn.addEventListener('click', () => {
        const checkboxes = Array.from(document.querySelectorAll("[data-path*='/vendor/'] input[type='checkbox'][name='viewed']"));
        processCheckboxes(checkboxes);
    })
})();

function processCheckboxes(arr) {
    if (arr.length === 0) {
        return;
    }
    const checkbox = arr[0];
    if(!checkbox.checked) {
        checkbox.click();
        console.log("Checked!");
    } else {
        console.log("Skipped!");
    }
    const delay = checkbox.checked ? 10 : 300; // To prevent throttling from GitHub API
    setTimeout(() => processCheckboxes(arr.slice(1)), delay);
}

The script adds a "Mark Vendor Files" button next to the "Review changes" button. If you don't see it, try refreshing the page.

Make sure to scroll down before clicking the button so that all the files in the PR are loaded.