@stripe/react-stripe-js/src/utils/usePrevious.ts

React components for Stripe.js and Stripe Elements

import React from 'react';

export const usePrevious = <T>(value: T): T => {
  const ref = React.useRef(value);

  React.useEffect(() => {
    ref.current = value;
  }, [value]);

  return ref.current;
};