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8 pages in this section.
A one-page intro tour of core RN primitives before deeper mobile sections.
Layout primitives, text nesting rules, and platform-specific rendering quirks.
How updates propagate on native threads vs the JS runtime.
Pressable, gestures at the primitive layer, and hitSlop patterns.
`Platform.OS`, `Platform.select`, and `.ios`/`.android` file extensions.
Static assets, `require`, density buckets, and `expo-asset` loading.
`useWindowDimensions`, breakpoints, and tablet/phone layouts.
The core habits every RN developer should internalize first.