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React 19

Performance & Testing

Profiler flamegraphs, virtualization of huge lists, Vitest, React Testing Library, Component Testing

5 lessons•~125 min•+150 XP
Topic Progress
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Remaining to learn: 5

Lessons in Module (5)

5 lessons in order
01

React Profiling: React DevTools Flamegraph, Render Waste, and INP Debugging

25 min•+30 XP
02

List & Table Virtualization: TanStack Virtual and Rendering 100,000+ Items

25 min•+30 XP
03

Component Testing with Vitest and React Testing Library in React 19

25 min•+30 XP
04

Playwright Component Testing (CT): Real-Browser Testing and Visual Regression

25 min•+30 XP
05

React Anti-patterns: Memory Leaks, Stale Closures, and Async Effect Race Conditions

25 min•+30 XP
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