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License: MIT License
Building Micro Frontends with React 18, Published by Packt
License: MIT License
I am going through the book and followed instructions on how the hook was made and when using it i get an error in the application.
Cannot read properties of null (reading 'useCallback'). It keeps pointing to this part of the code.
const readValue = useCallback((): T => {
// Prevent build error "window is undefined" but keep keep working
if (typeof window === 'undefined') {
return initialValue;
}
try {
const item = window.sessionStorage.getItem(key);
return item ? (parseJSON(item) as T) : initialValue;
} catch (error) {
console.warn(`Error reading sessionStorage key “${key}”:`, error);
return initialValue;
}
}, [initialValue, key]);
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