Architectural Refactoring and Performance Tuning
Refactor monolithic React code into a modular, high-performance app with GitHub Copilot, transforming it from spaghetti to scalable.
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You’ve been working on a simple but sleek daily budget tracker app. It’s a handy tool where users can add income or expenses and search through them in real-time. The UI is intuitive, the core features are in place, and everything functions as expected. You implemented debounced search to avoid unnecessary filtering, built the transaction form, handled calculations for total income and expense, and even added some styling polish.
Refactoring and performance tuning
Everything lives inside one giant App.js file, but it works. When you showed this to your team lead, they gave you the green light and said it was good to merge.
Feeling confident, you push your branch and tag your CTO for final approval.
Task: Before continuing with the lesson, clone the project repo so you can follow along with the original (unrefactored) code:
git clone https://github.com/Educative-Content/Daily-Budget-Trackercd Daily-Budget-Trackernpm installnpm start
Test your command here:
This is the version of the app your CTO reviewed. It contains everything in a single file, making it functional but far from scalable. In the rest of this lesson, you’ll work with GitHub Copilot to refactor it, optimize performance, and turn this spaghetti into clean architecture.
Here’s the current App.js (everything bundled together):
GitHub Copilot chat isn’t ...