| 3 | const MOBILE_BREAKPOINT = 768 |
| 4 | |
| 5 | export function useIsMobile() { |
| 6 | const [isMobile, setIsMobile] = React.useState<boolean | undefined>(undefined) |
| 7 | |
| 8 | React.useEffect(() => { |
| 9 | const mql = window.matchMedia(`(max-width: ${MOBILE_BREAKPOINT - 1}px)`) |
| 10 | const onChange = () => { |
| 11 | setIsMobile(window.innerWidth < MOBILE_BREAKPOINT) |
| 12 | } |
| 13 | mql.addEventListener("change", onChange) |
| 14 | setIsMobile(window.innerWidth < MOBILE_BREAKPOINT) |
| 15 | return () => mql.removeEventListener("change", onChange) |
| 16 | }, []) |
| 17 | |
| 18 | return !!isMobile |
| 19 | } |