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React 19

Hooks, State & Data

Built-in hooks, custom hooks, useActionState, useOptimistic, useTransition, state machines

5 lessons•~115 min•+150 XP
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Remaining to learn: 5

Lessons in Module (5)

5 lessons in order
01

Custom Hook Architecture: Clean Contracts, Invariants, and SSR Safety

25 min•+30 XP
02

Modern Client State: Zustand (Slices) and Jotai Atoms

25 min•+30 XP
03

Server State Management: TanStack Query v5 and Hydration

25 min•+30 XP
04

URL as the Source of Truth: Type-Safe State Management with nuqs

20 min•+30 XP
05

Anatomy of React Context: Hidden Re-renders, Context Splitting, and useSyncExternalStore

20 min•+30 XP
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