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Complete React Native and Expo optimization guide combining Callstack profiling with Vercel code patterns. Covers FPS, TTI, bundle size, memory, lists, animations, state, UI, and React Compiler. Use for any React Native performance, debugging, or best practices task.

Use this Skill: https://skilld.dev/gh/gigs-slc/react-native-skills/react-native

This session only. Nothing lands on disk.

rulesui-safe-area-scroll.md

≈395 tokens on demand. Your agent reads this file only when SKILL.md points to it.

Use contentInsetAdjustmentBehavior for Safe Areas

Use contentInsetAdjustmentBehavior="automatic" on the root ScrollView instead of wrapping content in SafeAreaView or manual padding. This lets iOS handle safe area insets natively with proper scroll behavior.

Incorrect (SafeAreaView wrapper):

import { SafeAreaView, ScrollView, View, Text } from 'react-native'

function MyScreen() {
  return (
    <SafeAreaView style={{ flex: 1 }}>
      <ScrollView>
        <View>
          <Text>Content</Text>
        </View>
      </ScrollView>
    </SafeAreaView>
  )
}

Incorrect (manual safe area padding):

import { ScrollView, View, Text } from 'react-native'
import { useSafeAreaInsets } from 'react-native-safe-area-context'

function MyScreen() {
  const insets = useSafeAreaInsets()

  return (
    <ScrollView contentContainerStyle={{ paddingTop: insets.top }}>
      <View>
        <Text>Content</Text>
      </View>
    </ScrollView>
  )
}

Correct (native content inset adjustment):

import { ScrollView, View, Text } from 'react-native'

function MyScreen() {
  return (
    <ScrollView contentInsetAdjustmentBehavior='automatic'>
      <View>
        <Text>Content</Text>
      </View>
    </ScrollView>
  )
}

The native approach handles dynamic safe areas (keyboard, toolbars) and allows content to scroll behind the status bar naturally.

Source: SKILL.md on GitHub

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    The skill is a technical React Native guide that includes a high-risk remote code execution pattern for installing a performance tool.

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Signed by skilld at 1d299ca. This ties the file your Agent reads to that commit on GitHub. It does not review the instructions.

Last checked against GitHub 2 days ago.

Dormantupdated 8 months ago
Other metadata
metadata
{
  "author": "Callstack + Vercel",
  "version": "1.0.0",
  "tags": "react-native, expo, performance, optimization, patterns"
}

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