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return isLoading ? <Component /> : nullD
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const App: () => React$Node = () => {
const [counter, setCounter] = React.useState(0);
React.useEffect(() => {
const timer = setInterval(() => {
setCounter(counter + Math.random() * 10);
}, 1000);
return () => {
clearInterval(timer);
};
}, []);
return (
<>
<StatusBar barStyle="default" />
<View style={styles.container}>
<Text>{counter}</Text>
</View>
</>
);
};AD