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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | 1x 1x 1x 12x 12x 12x 12x 6x 6x 6x 6x 6x 12x 12x 12x | import * as React from 'react';
const MOBILE_BREAKPOINT = 768;
export function useIsMobile(): boolean {
const [isMobile, setIsMobile] = React.useState<boolean | undefined>(
undefined,
);
React.useEffect(() => {
const mql = window.matchMedia(`(max-width: ${MOBILE_BREAKPOINT - 1}px)`);
const onChange = (): void => {
setIsMobile(window.innerWidth < MOBILE_BREAKPOINT);
};
mql.addEventListener('change', onChange);
setIsMobile(window.innerWidth < MOBILE_BREAKPOINT);
return (): void => mql.removeEventListener('change', onChange);
}, []);
return !!isMobile;
}
|