The 20,000-line PR that was actually 47 lines: building ClearPR Some time back, a teammate opened a PR. The diff said 20,847 lines changed . I clicked, my MacBook fan kicked in, and GitHub started painting the page in those familiar green and red blocks. I scrolled. Scrolled some more. Then a bit more. Eventually I got to the part where I realised what had happened: someone had run Prettier on the whole repo before pushing. The actual change was 47 lines. I sat there for a moment thinking about the rest of my afternoon, which was now going to involve scrolling past twenty thousand lines of trailing-comma additions and quote-style flips just to find the part of the code that actually did something different. I tried the GitHub "Hide whitespace" toggle. It did nothing useful, because Prettier does not just touch whitespace. It rewraps lines. It reorders imports. It changes single quotes to double quotes. The toggle was built for a simpler time.…