TLDR Tech / Dev
Untapped Way to Learn a Codebase: Build a Visualizer
One way to learn unfamiliar codebases is to build custom visualization tools to gain deeper understanding. This method involves setting clear goals, experimenting with code changes, and investigating specific issues, demonstrated by tracing a tree-shaking bug within Next.js's Turbopack. By developing a visualizer, this dev uncovered how code processes, understood the bug's root cause, and grasped the system's incremental computation model.
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