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