simsite/frontend/node_modules/tunnel-rat/src/utils.ts

import React from 'react'

/**
 * An SSR-friendly useLayoutEffect.
 *
 * React currently throws a warning when using useLayoutEffect on the server.
 * To get around it, we can conditionally useEffect on the server (no-op) and
 * useLayoutEffect elsewhere.
 *
 * @see https://github.com/facebook/react/issues/14927
 */
export const useIsomorphicLayoutEffect =
  typeof window !== 'undefined' && (window.document?.createElement || window.navigator?.product === 'ReactNative')
    ? React.useLayoutEffect
    : React.useEffect

export function useMutableCallback<T>(fn: T) {
  const ref = React.useRef<T>(fn)
  useIsomorphicLayoutEffect(() => void (ref.current = fn), [fn])
  return ref
}