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chore: improve apps/recursive
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‎apps/recursive/App.tsx‎

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Original file line numberDiff line numberDiff line change
@@ -1,160 +1,127 @@
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/**
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* Sample React Native App
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* https://github.com/facebook/react-native
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*
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* Generated with the TypeScript template
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* https://github.com/react-native-community/react-native-template-typescript
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*
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* @format
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*/
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import SandboxReactNativeView from '@callstack/react-native-sandbox'
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import {NewAppScreen} from '@react-native/new-app-screen'
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import React from 'react'
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import {
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SafeAreaView,
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ScrollView,
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StatusBar,
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StyleSheet,
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Text,
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useColorScheme,
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View,
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} from 'react-native'
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const Colors = {
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light: '#ffffff',
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lighter: '#f0f0f0',
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dark: '#000000',
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darker: '#1a1a1a',
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}
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const Header = ({children}: {children: React.ReactNode}) => (
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<Text style={{fontSize: 24, fontWeight: 'bold', margin: 20}}>{children}</Text>
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)
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import {ScrollView, StyleSheet, Text, useColorScheme, View} from 'react-native'
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const MAX_DEPTH = 5
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type SectionProps = {
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children: React.ReactNode
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title: string
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depth: number
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}
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function Section({children, title, depth}: SectionProps): React.JSX.Element {
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const isDarkMode = useColorScheme() === 'dark'
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return (
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<View style={styles.sectionContainer}>
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<Text
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style={[
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styles.sectionTitle,
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{
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color: isDarkMode ? Colors.light : Colors.dark,
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fontSize: 26 - depth * 3,
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},
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]}>
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{title}
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</Text>
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<Text
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style={[
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styles.sectionDescription,
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{
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color: isDarkMode ? Colors.light : Colors.dark,
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fontSize: 20 - depth * 3,
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},
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]}>
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{children}
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</Text>
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</View>
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)
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}
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interface AppProps {
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depth?: number
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}
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function App({depth = 1}: AppProps): React.JSX.Element {
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const App = ({depth = 1}: AppProps) => {
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const isDarkMode = useColorScheme() === 'dark'
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const backgroundStyle = {
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backgroundColor: isDarkMode ? Colors.darker : Colors.lighter,
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backgroundColor: isDarkMode ? '#000000' : '#ffffff',
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}
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const colors = ['#FF0000', '#00FF00', '#0000FF', '#FFFF00', '#00FFFF']
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const borderColor = colors[depth - 1] || 'gray'
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return (
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<SafeAreaView style={backgroundStyle}>
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<StatusBar
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barStyle={isDarkMode ? 'light-content' : 'dark-content'}
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backgroundColor={backgroundStyle.backgroundColor}
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/>
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<View style={backgroundStyle}>
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<ScrollView
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contentInsetAdjustmentBehavior="automatic"
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style={backgroundStyle}>
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<Header>React Native Multi-Instance</Header>
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<View
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style={[
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{
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backgroundColor: isDarkMode ? Colors.dark : Colors.light,
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borderColor: borderColor,
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},
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depth > 1 && styles.nestedContainer,
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]}>
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<Section title={`Recursive Sandbox (Depth: ${depth})`} depth={depth}>
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This is a nested React Native instance.
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</Section>
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<Text style={styles.scrollHint}>👇👇 Scroll to the bottom 👇👇</Text>
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<NewAppScreen templateFileName="App.tsx" />
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<View style={styles.recursiveSection}>
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{depth < MAX_DEPTH ? (
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<View style={styles.recursiveSandboxContainer}>
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<Text style={styles.recursiveSandboxTitle}>
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Next Level (Depth: {depth + 1})
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</Text>
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<SandboxReactNativeView
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style={styles.recursiveSandbox}
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jsBundleSource="index" // bundle name for query from metro
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componentName="App" // Recursively load App component from index.js
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jsBundleSource="index"
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componentName="App"
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initialProperties={{depth: depth + 1}}
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onMessage={msg => console.log('message', msg)}
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onError={e => console.error('error', e)}
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onMessage={(msg: any) => console.log('message', msg)}
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onError={(e: any) => console.error('error', e)}
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/>
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</View>
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) : (
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<Section title="Max Depth Reached!" depth={depth}>
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No more nested instances will be created.
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</Section>
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<View style={styles.maxDepthContainer}>
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<Text
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style={[
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styles.maxDepthTitle,
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{color: isDarkMode ? '#ffffff' : '#000000'},
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]}>
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Max Depth Reached!
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</Text>
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<Text
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style={[
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styles.maxDepthDescription,
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{color: isDarkMode ? '#cccccc' : '#666666'},
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]}>
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No more nested instances will be created. This demonstrates the
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full capability of nested React Native instances.
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</Text>
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</View>
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)}
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</View>
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</ScrollView>
116-
</SafeAreaView>
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</View>
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)
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}
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const styles = StyleSheet.create({
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sectionContainer: {
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marginTop: 32,
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paddingHorizontal: 24,
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},
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sectionTitle: {
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fontWeight: '600',
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},
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sectionDescription: {
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marginTop: 8,
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fontWeight: '400',
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},
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highlight: {
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fontWeight: '700',
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scrollHint: {
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padding: 20,
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textAlign: 'center',
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fontSize: 22,
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backgroundColor: '#f3f3f3',
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},
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nestedContainer: {
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borderWidth: 2,
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margin: 5,
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padding: 5,
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recursiveSection: {
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paddingHorizontal: 24,
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backgroundColor: '#f3f3f3',
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paddingBottom: 24,
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marginTop: -34,
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},
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recursiveSandboxContainer: {
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marginTop: 20,
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height: 500,
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borderWidth: 1,
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borderColor: 'gray',
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marginHorizontal: 24,
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marginBottom: 20,
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borderColor: '#cccccc',
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borderRadius: 8,
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overflow: 'hidden',
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},
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recursiveSandboxTitle: {
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fontSize: 16,
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fontWeight: 'bold',
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textAlign: 'center',
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padding: 10,
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color: 'black',
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padding: 12,
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backgroundColor: '#f8f9fa',
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color: '#000000',
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},
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recursiveSandbox: {
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flex: 1,
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},
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maxDepthContainer: {
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padding: 20,
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backgroundColor: '#f8f9fa',
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borderRadius: 8,
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borderWidth: 1,
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borderColor: '#e9ecef',
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},
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maxDepthTitle: {
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fontSize: 20,
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fontWeight: 'bold',
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marginBottom: 8,
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},
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maxDepthDescription: {
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fontSize: 14,
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lineHeight: 20,
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},
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})
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export default App

‎apps/recursive/README.md‎

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This example demonstrates the capability of `react-native-sandbox` to create and manage nested React Native instances. The application recursively renders `SandboxReactNativeView` components, each encapsulating another instance of the same application, up to a predefined maximum depth.
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<div align="center">
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<img src="./docs/screenshot.png" width="240" />
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<img src="./docs/screenshot_1.png" width="240" />
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<img src="./docs/screenshot_2.png" width="240" />
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</div>

‎apps/recursive/docs/screenshot.png‎

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‎apps/recursive/docs/screenshot_1.png‎

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‎apps/recursive/docs/screenshot_2.png‎

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‎apps/recursive/ios/Podfile.lock‎

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- React-timing
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- React-utils
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- SocketRocket
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- React-Sandbox (0.2.0):
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- React-Sandbox (0.4.0):
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- boost
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- DoubleConversion
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- fast_float
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React-runtimeexecutor: 17c70842d5e611130cb66f91e247bc4a609c3508
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React-RuntimeHermes: 3c88e6e1ea7ea0899dcffc77c10d61ea46688cfd
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React-runtimescheduler: 024500621c7c93d65371498abb4ee26d34f5d47d
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React-Sandbox: 789583cf1f6db8c2bf95e54125aef4314fe9d8ca
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React-Sandbox: e3cf3c955559ed9f0bf014b29dce1e94600cd790
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React-timing: c3c923df2b86194e1682e01167717481232f1dc7
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React-utils: 9154a037543147e1c24098f1a48fc8472602c092
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ReactAppDependencyProvider: afd905e84ee36e1678016ae04d7370c75ed539be

‎apps/recursive/package.json‎

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"jest": "echo 'No tests'"
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},
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"dependencies": {
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"@callstack/react-native-sandbox": "workspace:*",
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"@react-native/new-app-screen": "^0.80.2",
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"react": "19.1.0",
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"react-native": "0.80.1",
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"@callstack/react-native-sandbox": "workspace:*"
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"react-native": "0.80.1"
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},
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"devDependencies": {
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"@babel/core": "^7.25.2",

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