{"version":3,"file":"index.cjs","sources":["../../src/index.tsx"],"sourcesContent":["import * as React from 'react'\nimport { flushSync } from 'react-dom'\nimport {\n  elementScroll,\n  observeElementOffset,\n  observeElementRect,\n  observeWindowOffset,\n  observeWindowRect,\n  PartialKeys,\n  Virtualizer,\n  VirtualizerOptions,\n  windowScroll,\n} from '@tanstack/virtual-core'\nexport * from '@tanstack/virtual-core'\n\n//\n\nconst useIsomorphicLayoutEffect =\n  typeof document !== 'undefined' ? React.useLayoutEffect : React.useEffect\n\nfunction useVirtualizerBase<\n  TScrollElement extends Element | Window,\n  TItemElement extends Element,\n>(\n  options: VirtualizerOptions<TScrollElement, TItemElement>,\n): Virtualizer<TScrollElement, TItemElement> {\n  const rerender = React.useReducer(() => ({}), {})[1]\n\n  const resolvedOptions: VirtualizerOptions<TScrollElement, TItemElement> = {\n    ...options,\n    onChange: (instance, sync) => {\n      if (sync) {\n        flushSync(rerender)\n      } else {\n        rerender()\n      }\n      options.onChange?.(instance, sync)\n    },\n  }\n\n  const [instance] = React.useState(\n    () => new Virtualizer<TScrollElement, TItemElement>(resolvedOptions),\n  )\n\n  instance.setOptions(resolvedOptions)\n\n  React.useEffect(() => {\n    return instance._didMount()\n  }, [])\n\n  useIsomorphicLayoutEffect(() => {\n    return instance._willUpdate()\n  })\n\n  return instance\n}\n\nexport function useVirtualizer<\n  TScrollElement extends Element,\n  TItemElement extends Element,\n>(\n  options: PartialKeys<\n    VirtualizerOptions<TScrollElement, TItemElement>,\n    'observeElementRect' | 'observeElementOffset' | 'scrollToFn'\n  >,\n): Virtualizer<TScrollElement, TItemElement> {\n  return useVirtualizerBase<TScrollElement, TItemElement>({\n    observeElementRect: observeElementRect,\n    observeElementOffset: observeElementOffset,\n    scrollToFn: elementScroll,\n    ...options,\n  })\n}\n\nexport function useWindowVirtualizer<TItemElement extends Element>(\n  options: PartialKeys<\n    VirtualizerOptions<Window, TItemElement>,\n    | 'getScrollElement'\n    | 'observeElementRect'\n    | 'observeElementOffset'\n    | 'scrollToFn'\n  >,\n): Virtualizer<Window, TItemElement> {\n  return useVirtualizerBase<Window, TItemElement>({\n    getScrollElement: () => (typeof document !== 'undefined' ? window : null),\n    observeElementRect: observeWindowRect,\n    observeElementOffset: observeWindowOffset,\n    scrollToFn: windowScroll,\n    initialOffset: typeof document !== 'undefined' ? window.scrollY : undefined,\n    ...options,\n  })\n}\n"],"names":["React","instance","flushSync","Virtualizer","observeElementRect","observeElementOffset","elementScroll","observeWindowRect","observeWindowOffset","windowScroll"],"mappings":";;;;;;;;;;;;;;;;;;;;;;AAiBA,MAAM,4BACJ,OAAO,aAAa,cAAcA,iBAAM,kBAAkBA,iBAAM;AAElE,SAAS,mBAIP,SAC2C;AACrC,QAAA,WAAWA,iBAAM,WAAW,OAAO,CAAK,IAAA,CAAE,CAAA,EAAE,CAAC;AAEnD,QAAM,kBAAoE;AAAA,IACxE,GAAG;AAAA,IACH,UAAU,CAACC,WAAU,SAAS;;AAC5B,UAAI,MAAM;AACRC,iBAAA,UAAU,QAAQ;AAAA,MAAA,OACb;AACI;MACX;AACQ,oBAAA,aAAA,iCAAWD,WAAU;AAAA,IAC/B;AAAA,EAAA;AAGI,QAAA,CAAC,QAAQ,IAAID,iBAAM;AAAA,IACvB,MAAM,IAAIG,YAAA,YAA0C,eAAe;AAAA,EAAA;AAGrE,WAAS,WAAW,eAAe;AAEnCH,mBAAM,UAAU,MAAM;AACpB,WAAO,SAAS;EAClB,GAAG,CAAE,CAAA;AAEL,4BAA0B,MAAM;AAC9B,WAAO,SAAS;EAAY,CAC7B;AAEM,SAAA;AACT;AAEO,SAAS,eAId,SAI2C;AAC3C,SAAO,mBAAiD;AAAA,IAAA,oBACtDI,YAAA;AAAA,IAAA,sBACAC,YAAA;AAAA,IACA,YAAYC,YAAA;AAAA,IACZ,GAAG;AAAA,EAAA,CACJ;AACH;AAEO,SAAS,qBACd,SAOmC;AACnC,SAAO,mBAAyC;AAAA,IAC9C,kBAAkB,MAAO,OAAO,aAAa,cAAc,SAAS;AAAA,IACpE,oBAAoBC,YAAA;AAAA,IACpB,sBAAsBC,YAAA;AAAA,IACtB,YAAYC,YAAA;AAAA,IACZ,eAAe,OAAO,aAAa,cAAc,OAAO,UAAU;AAAA,IAClE,GAAG;AAAA,EAAA,CACJ;AACH;;;;;;;;;;"}