use-mobile

1import * as React from "react";
2 
3export function useIsMobile(mobileBreakpoint = 768) {
4  const [isMobile, setIsMobile] = React.useState<boolean | undefined>(undefined);
5 
6  React.useEffect(() => {
7    const mql = window.matchMedia(`(max-width: ${mobileBreakpoint - 1}px)`);
8    const onChange = () => {
9      setIsMobile(window.innerWidth < mobileBreakpoint);
10    };
11    mql.addEventListener("change", onChange);
12    setIsMobile(window.innerWidth < mobileBreakpoint);
13    return () => mql.removeEventListener("change", onChange);
14  }, [mobileBreakpoint]);
15 
16  return !!isMobile;
17}