See all outdated comments in the body of pull-request on GitHub

expand_outdated_comments.js

// Add it to bookmarks and then click to see all outdated comments in the body of pull-request on GitHub:
javascript:Array.from(document.getElementsByClassName('outdated-comment')).forEach(l => l.classList.add('open'));

// Or copy it into address bar and replace "@" first char, hit Enter (without this char due to security reasons
// your browser will remove "javascript:" prefix and then you have to type it manually):
@javascript:Array.from(document.getElementsByClassName('outdated-comment')).forEach(l => l.classList.add('open'));

// In case this piece of code stopped to work recheck spelling of class name with page's source code. It happens,
// this name was changed before few times.