react-map-gl/src/utils/use-isomorphic-layout-effect.js

// From https://github.com/streamich/react-use/blob/master/src/useIsomorphicLayoutEffect.ts
// useLayoutEffect but does not trigger warning in server-side rendering
import {useEffect, useLayoutEffect} from 'react';

const useIsomorphicLayoutEffect = typeof window !== 'undefined' ? useLayoutEffect : useEffect;

export default useIsomorphicLayoutEffect;