@mantine/hooks/esm/use-scroll-direction/use-scroll-direction.mjs.map

A collection of 50+ hooks for state and UI management

{"version":3,"file":"use-scroll-direction.mjs","names":[],"sources":["../../src/use-scroll-direction/use-scroll-direction.ts"],"sourcesContent":["import { useEffect, useEffectEvent, useRef, useState } from 'react';\n\nexport type ScrollDirection = 'up' | 'down' | 'unknown';\n\nexport function useScrollDirection(): ScrollDirection {\n  const [lastScrollTop, setLastScrollTop] = useState(0);\n  const [scrollDirection, setScrollDirection] = useState<ScrollDirection>('unknown');\n  const [isResizing, setIsResizing] = useState(false);\n  const resizeTimerRef = useRef<number | undefined>(undefined);\n\n  const handleScroll = useEffectEvent(() => {\n    if (isResizing) {\n      return;\n    }\n\n    const currentScrollTop = window.scrollY || document.documentElement.scrollTop;\n    setScrollDirection(currentScrollTop < lastScrollTop ? 'up' : 'down');\n    setLastScrollTop(currentScrollTop);\n  });\n\n  useEffect(() => {\n    const handleResize = () => {\n      setIsResizing(true);\n      window.clearTimeout(resizeTimerRef.current);\n      resizeTimerRef.current = window.setTimeout(() => {\n        setIsResizing(false);\n      }, 300);\n    };\n\n    window.addEventListener('scroll', handleScroll);\n    window.addEventListener('resize', handleResize);\n\n    return () => {\n      window.removeEventListener('scroll', handleScroll);\n      window.removeEventListener('resize', handleResize);\n      clearTimeout(resizeTimerRef.current);\n    };\n  }, []);\n\n  return scrollDirection;\n}\n"],"mappings":";;;AAIA,SAAgB,qBAAsC;CACpD,MAAM,CAAC,eAAe,oBAAoB,SAAS,EAAE;CACrD,MAAM,CAAC,iBAAiB,sBAAsB,SAA0B,UAAU;CAClF,MAAM,CAAC,YAAY,iBAAiB,SAAS,MAAM;CACnD,MAAM,iBAAiB,OAA2B,KAAA,EAAU;CAE5D,MAAM,eAAe,qBAAqB;AACxC,MAAI,WACF;EAGF,MAAM,mBAAmB,OAAO,WAAW,SAAS,gBAAgB;AACpE,qBAAmB,mBAAmB,gBAAgB,OAAO,OAAO;AACpE,mBAAiB,iBAAiB;GAClC;AAEF,iBAAgB;EACd,MAAM,qBAAqB;AACzB,iBAAc,KAAK;AACnB,UAAO,aAAa,eAAe,QAAQ;AAC3C,kBAAe,UAAU,OAAO,iBAAiB;AAC/C,kBAAc,MAAM;MACnB,IAAI;;AAGT,SAAO,iBAAiB,UAAU,aAAa;AAC/C,SAAO,iBAAiB,UAAU,aAAa;AAE/C,eAAa;AACX,UAAO,oBAAoB,UAAU,aAAa;AAClD,UAAO,oBAAoB,UAAU,aAAa;AAClD,gBAAa,eAAe,QAAQ;;IAErC,EAAE,CAAC;AAEN,QAAO"}