@devloops/react-native-variant/lib/commonjs/Helpers/Hooks/useDimensions.js.flow

react-native material ui library

import {useEffect, useState} from 'react';
import {Dimensions, ScaledSize} from 'react-native';

const window = Dimensions.get('window');
const screen = Dimensions.get('screen');

export default function useDimensions() {
  const [dimensions, setDimensions] = useState({
    window,
    screen,
  });

  const onChange = ({
    window,
    screen,
  }: {
    window: ScaledSize;
    screen: ScaledSize;
  }) => {
    setDimensions({window, screen});
  };

  useEffect(() => {
    Dimensions.addEventListener('change', onChange);
    return () => Dimensions.removeEventListener('change', onChange);
  }, []);

  return dimensions;
}