Differential D8933 Diff 27145 web/cashtab/mobile/hooks/usePrevious.js

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				import { useRef, useEffect } from 'react';

				export const usePrevious = value => {
				// The ref object is a generic container whose current property is mutable ...
				// ... and can hold any value, similar to an instance property on a class
				const ref = useRef();

				// Store current value in ref
				useEffect(() => {
				ref.current = value;
				}, [value]); // Only re-run if value changes

				// Return previous value (happens before update in useEffect above)
				return ref.current;
				};

				export default usePrevious;