Is real-time scraping of facebook group posts possible?(Node.js)

I am a part of a couple political facebook groups (all closed groups) and I've noticed some anecdotal truth to the "fake news" hysteria. But I want proof. The Graph API doesn't allow pulling post data from closed groups - so I was wondering if a solution is possible where the facebook group is scraped when a new post shows up and the link posted is retrieved..? I have experience with Selenium Webdriver(for node) - but am unaware of scraping possibilities with node.js.