frontend-admin / Daocheng-Yading

// packages/react/use-previous/src/usePrevious.tsx
import * as React from "react";
function usePrevious(value) {
  const ref = React.useRef({ value, previous: value });
  return React.useMemo(() => {
    if (ref.current.value !== value) {
      ref.current.previous = ref.current.value;
      ref.current.value = value;
    }
    return ref.current.previous;
  }, [value]);
}
export {
  usePrevious
};
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