Frontend Performance Lab

A portfolio-grade React performance case study with intentionally slow and optimized implementations, benchmark instrumentation, a practical User Guide, coverage, TypeDoc output, and reproducible measurement notes.

Slow AppBaseline implementation with deliberate render, bundle, and list pressure. Optimized AppThe same UI with targeted memoization, virtualization, lazy loading, and state locality. User GuidePractical setup, review, benchmark, testing, and troubleshooting workflow. Benchmark ProtocolCanonical scenarios and measurement rules for both apps. DocumentationFocused metrics, profiling, trace export, and result references. CoverageHTML coverage generated by Vitest and the V8 provider. TypeDocDocumentation for benchmark, profiling, data, and performance helper APIs.