Modernizing Legacy Codebases with GitHub Copilot Stacked Sessions

lee_stott · x · 2026-08-01

A GitHub blog post detailed how to use the Stacked sessions feature in the GitHub Copilot app to modernize legacy codebases.

Using a 10-year-old personal dashboard app with severely outdated dependencies (like React 15) as an example, the author demonstrated how Copilot can break down large, painful refactoring tasks into a chain of smaller, dependent sessions. This allows developers to tackle complex code modernization efficiently, building each task off the previous one.

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