sam2/demo/frontend/src/common/screen/useScreenSize.tsx

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import {screenSizes} from '@/theme/tokens.stylex';
import {useLayoutEffect, useState} from 'react';

export default function useScreenSize(): {
  screenSize: number;
  isMobile: boolean;
} {
  const [screenSize, setScreenSize] = useState<number>(0);

  useLayoutEffect(() => {
    const updateSize = (): void => {
      setScreenSize(window.innerWidth);
    };
    window.addEventListener('resize', updateSize);
    updateSize();
    return (): void => window.removeEventListener('resize', updateSize);
  }, []);

  return {isMobile: screenSize < screenSizes['md'], screenSize};
}