Collapse diffs for file extensions in a GitHub PR

collapse.js

const collapse = extensions =>
    [...document.querySelectorAll('.file.js-details-container')]
        .filter(item => extensions.indexOf(item.querySelector('.file-header .file-info .user-select-contain').innerHTML.split('.').pop().toLowerCase().trim()) > -1)
        .forEach(item => item.querySelector('.data').style.display = 'none');
    
collapse(['php']);