Function useConstant

src/useConstant.ts:15–21

(init: () => T)

 * @param init - A function to generate the value
 */
export default function useConstant<T>(init: () => T): T {
  const ref = React.useRef<T | undefined>(undefined);
  if (!ref.current) {
    ref.current = init();
  }
  return ref.current;
}