20 lines
565 B
TypeScript
20 lines
565 B
TypeScript
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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}
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