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{"ast":null,"code":"\"use strict\";\n\nimport { NavigationContext, useRoute } from '@react-navigation/core';\nimport * as React from 'react';\nfunction getScrollableNode(ref) {\n if (ref.current == null) {\n return null;\n }\n if ('scrollToTop' in ref.current || 'scrollTo' in ref.current || 'scrollToOffset' in ref.current || 'scrollResponderScrollTo' in ref.current) {\n return ref.current;\n } else if ('getScrollResponder' in ref.current) {\n return ref.current.getScrollResponder();\n } else if ('getNode' in ref.current) {\n return ref.current.getNode();\n } else {\n return ref.current;\n }\n}\nexport function useScrollToTop(ref) {\n var navigation = React.useContext(NavigationContext);\n var route = useRoute();\n if (navigation === undefined) {\n throw new Error(\"Couldn't find a navigation object. 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Is your component inside NavigationContainer?\"\n );\n }\n\n React.useEffect(() => {\n const tabNavigations: NavigationProp<ParamListBase>[] = [];\n let currentNavigation = navigation;\n // If the screen is nested inside multiple tab navigators, we should scroll to top for any of them\n // So we need to find all the parent tab navigators and add the listeners there\n while (currentNavigation) {\n if (currentNavigation.getState().type === 'tab') {\n tabNavigations.push(currentNavigation);\n }\n\n currentNavigation = currentNavigation.getParent();\n }\n\n if (tabNavigations.length === 0) {\n return;\n }\n\n const unsubscribers = tabNavigations.map((tab) => {\n return tab.addListener(\n // We don't wanna import tab types here to avoid extra deps\n // in addition, there are multiple tab implementations\n // @ts-expect-error the `tabPress` event is only available when navigation type is tab\n 'tabPress',\n (e: EventArg<'tabPress', true>) => {\n // We should scroll to top only when the screen is focused\n const isFocused = navigation.isFocused();\n\n // In a nested stack navigator, tab press resets the stack to first screen\n // So we should scroll to top only when we are on first screen\n const isFirst =\n tabNavigations.includes(navigation) ||\n navigation.getState().routes[0].key === route.key;\n\n // Run the operation in the next frame so we're sure all listeners have been run\n // This is necessary to know if preventDefault() has been called\n requestAnimationFrame(() => {\n const scrollable = getScrollableNode(ref) as ScrollableWrapper;\n\n if (isFocused && isFirst && scrollable && !e.defaultPrevented) {\n if ('scrollToTop' in scrollable) {\n scrollable.scrollToTop();\n } else if ('scrollTo' in scrollable) {\n scrollable.scrollTo({ y: 0, animated: true });\n } else if ('scrollToOffset' in scrollable) {\n scrollable.scrollToOffset({ offset: 0, animated: true });\n } else if ('scrollResponderScrollTo' in scrollable) {\n scrollable.scrollResponderScrollTo({ y: 0, animated: true });\n }\n }\n });\n }\n );\n });\n\n return () => {\n unsubscribers.forEach((unsubscribe) => unsubscribe());\n };\n }, [navigation, ref, route.key]);\n}\n"],"mappings":";;AAAA,SAEEA,iBAAiB,EAGjBC,QAAQ,QACH,wBAAwB;AAC/B,OAAO,KAAKC,KAAK,MAAM,OAAO;AAiB9B,SAASC,iBAAiBA,CAACC,GAAuC,EAAE;EAClE,IAAIA,GAAG,CAACC,OAAO,IAAI,IAAI,EAAE;IACvB,OAAO,IAAI;EACb;EAEA,IACE,aAAa,IAAID,GAAG,CAACC,OAAO,IAC5B,UAAU,IAAID,GAAG,CAACC,OAAO,IACzB,gBAAgB,IAAID,GAAG,CAACC,OAAO,IAC/B,yBAAyB,IAAID,GAAG,CAACC,OAAO,EACxC;IAEA,OAAOD,GAAG,CAACC,OAAO;EACpB,CAAC,MAAM,IAAI,oBAAoB,IAAID,GAAG,CAACC,OAAO,EAAE;IAG9C,OAAOD,GAAG,CAACC,OAAO,CAACC,kBAAkB,CAAC,CAAC;EACzC,CAAC,MAAM,IAAI,SAAS,IAAIF,GAAG,CAACC,OAAO,EAAE;IAKnC,OAAOD,GAAG,CAACC,OAAO,CAACE,OAAO,CAAC,CAAC;EAC9B,CAAC,MAAM;IACL,OAAOH,GAAG,CAACC,OAAO;EACpB;AACF;AAEA,OAAO,SAASG,cAAcA,CAACJ,GAAuC,EAAE;EACtE,IAAMK,UAAU,GAAGP,KAAK,CAACQ,UAAU,CAACV,iBAAiB,CAAC;EACtD,IAAMW,KAAK,GAAGV,QAAQ,CAAC,CAAC;EAExB,IAAIQ,UAAU,KAAKG,SAAS,EAAE;IAC5B,MAAM,IAAIC,KAAK,CACb,kFACF,CAAC;EACH;EAEAX,KAAK,CAACY,SAAS,CAAC,YAAM;IACpB,IAAMC,cAA+C,GAAG,EAAE;IAC1D,IAAIC,iBAAiB,GAAGP,UAAU;IAGlC,OAAOO,iBAAiB,EAAE;MACxB,IAAIA,iBAAiB,CAACC,QAAQ,CAAC,CAAC,CAACC,IAAI,KAAK,KAAK,EAAE;QAC/CH,cAAc,CAACI,IAAI,CAACH,iBAAiB,CAAC;MACxC;MAEAA,iBAAiB,GAAGA,iBAAiB,CAACI,SAAS,CAAC,CAAC;IACnD;IAEA,IAAIL,cAAc,CAACM,MAAM,KAAK,CAAC,EAAE;MAC/B;IACF;IAEA,IAAMC,aAAa,GAAGP,cAAc,CAACQ,GAAG,CAAE,UAAAC,GAAG,EAAK;MAChD,OAAOA,GAAG,CAACC,WAAW,CAIpB,UAAU,EACT,UAAAC,CAA6B,EAAK;QAEjC,IAAMC,SAAS,GAAGlB,UAAU,CAACkB,SAAS,CAAC,CAAC;QAIxC,IAAMC,OAAO,GACXb,cAAc,CAACc,QAAQ,CAACpB,UAAU,CAAC,IACnCA,UAAU,CAACQ,QAAQ,CAAC,CAAC,CAACa,MAAM,CAAC,CAAC,CAAC,CAACC,GAAG,KAAKpB,KAAK,CAACoB,GAAG;QAInDC,qBAAqB,CAAC,YAAM;UAC1B,IAAMC,UAAU,GAAG9B,iBAAiB,CAACC,GAAG,CAAsB;UAE9D,IAAIuB,SAAS,IAAIC,OAAO,IAAIK,UAAU,IAAI,CAACP,CAAC,CAACQ,gBAAgB,EAAE;YAC7D,IAAI,aAAa,IAAID,UAAU,EAAE;cAC/BA,UAAU,CAACE,WAAW,CAAC,CAAC;YAC1B,CAAC,MAAM,IAAI,UAAU,IAAIF,UAAU,EAAE;cACnCA,UAAU,CAACG,QAAQ,CAAC;gBAAEC,CAAC,EAAE,CAAC;gBAAEC,QAAQ,EAAE;cAAK,CAAC,CAAC;YAC/C,CAAC,MAAM,IAAI,gBAAgB,IAAIL,UAAU,EAAE;cACzCA,UAAU,CAACM,cAAc,CAAC;gBAAEC,MAAM,EAAE,CAAC;gBAAEF,QAAQ,EAAE;cAAK,CAAC,CAAC;YAC1D,CAAC,MAAM,IAAI,yBAAyB,IAAIL,UAAU,EAAE;cAClDA,UAAU,CAACQ,uBAAuB,CAAC;gBAAEJ,CAAC,EAAE,CAAC;gBAAEC,QAAQ,EAAE;cAAK,CAAC,CAAC;YAC9D;UACF;QACF,CAAC,CAAC;MACJ,CACF,CAAC;IACH,CAAC,CAAC;IAEF,OAAO,YAAM;MACXhB,aAAa,CAACoB,OAAO,CAAE,UAAAC,WAAW;QAAA,OAAKA,WAAW,CAAC,CAAC;MAAA,EAAC;IACvD,CAAC;EACH,CAAC,EAAE,CAAClC,UAAU,EAAEL,GAAG,EAAEO,KAAK,CAACoB,GAAG,CAAC,CAAC;AAClC","ignoreList":[]},"metadata":{},"sourceType":"module","externalDependencies":[]}