import * as React from 'react' const MOBILE_BREAKPOINT = 768 export function useIsMobile() { const [isMobile, setIsMobile] = React.useState(undefined) React.useEffect(() => { const mql = window.matchMedia(`(max-width: ${MOBILE_BREAKPOINT - 1}px)`) const onChange = () => { setIsMobile(window.innerWidth < MOBILE_BREAKPOINT) } mql.addEventListener('change', onChange) setIsMobile(window.innerWidth < MOBILE_BREAKPOINT) return () => mql.removeEventListener('change', onChange) }, []) return !!isMobile }