All files useComplexValueItem.tsx

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import * as React from "react";
 
export default function useComplexValueItem<
  T extends { [key: string]: any },
  V
>(
  complexValue: T,
  key: keyof T,
  setComplexValue: (complexValue: T) => void,
): [V, (value: V) => void] {
  const handleItemValueChange = React.useCallback(
    value => {
      setComplexValue(Object.assign({}, complexValue, { [key]: value }));
    },
    [setComplexValue, complexValue, key],
  );
  return [complexValue ? complexValue[key] : undefined, handleItemValueChange];
}