GitHub Copilot Stacked Sessions: My 10-Year Refactor Story

GitHub Copilot's stacked sessions feature enabled a developer to modernize a personal dashboard app written in React 15, Less, and react-bootstrap from 2014, a task previously abandoned as a multi-week nightmare. The developer used Copilot's Plan mode to outline a full frontend overhaul, including migrating to Tailwind or vanilla CSS, removing Less, and improving accessibility and responsiveness.

GitHub Copilot Stacked Sessions: My 10-Year Refactor Story GitHub Copilot /en/tags/github%20copilot/ app is quietly the most useful thing for anyone staring down an old codebase. Stacked sessions are exactly what they sound like: a sequence of tasks in the same repository where each session picks up where the previous one left off. I put that pattern through a brutal real-world test — modernizing a personal dashboard app I haven't seriously touched since 2014. The state of things: React 15 2016 vintage , Less for CSS preprocessing, react-bootstrap from the same era. The app still works, but untangling it without AI would've been a multi-week nightmare. I'd actually tried and given up before. It's not a huge codebase, but it's just big enough to hurt. So I loaded the repo into the Copilot app and started in Plan mode, throwing the whole problem at it in one shot: text I want to modernize the frontend for this project. I first wrote a lot of this code more than 10 years ago and it should be cleaned up a lot. I'm thinking we start either using Tailwind or just vanilla CSS please vet everything to help me decide , we remove all Less etc , and clean everything up accessibility-wise and responsiveness-wise. Right now I really want to just focus on styles, and then slowly Next Gemini Robotics 2: Whole-Body Humanoid Control → /en/threads/4443/