first commit

common/resources/client/utils/hooks/is-mobile-device.ts

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+import {useIsSSR} from '@react-aria/ssr';
+import {getBootstrapData} from '@common/core/bootstrap-data/use-backend-bootstrap-data';
+
+const MOBILE_SCREEN_WIDTH = 768;
+
+export function useIsMobileDevice(): boolean {
+  const isSSR = useIsSSR();
+  if (isSSR || typeof window === 'undefined') {
+    return getBootstrapData().is_mobile_device;
+  }
+
+  return window.screen.width <= MOBILE_SCREEN_WIDTH;
+}