{"ast":null,"code":"import _typeof from \"@babel/runtime/helpers/esm/typeof\";\nimport _objectSpread from \"@babel/runtime/helpers/esm/objectSpread2\";\nimport _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\n/* eslint-disable no-param-reassign */\nimport * as React from 'react';\nimport raf from \"rc-util/es/raf\";\nimport useLayoutEffect from \"rc-util/es/hooks/useLayoutEffect\";\nimport { warning } from 'rc-util';\nvar MAX_TIMES = 10;\nexport default function useScrollTo(containerRef, data, heights, itemHeight, getKey, collectHeight, syncScrollTop, triggerFlash) {\n  var scrollRef = React.useRef();\n  var _React$useState = React.useState(null),\n    _React$useState2 = _slicedToArray(_React$useState, 2),\n    syncState = _React$useState2[0],\n    setSyncState = _React$useState2[1];\n\n  // ========================== Sync Scroll ==========================\n  useLayoutEffect(function () {\n    if (syncState && syncState.times < MAX_TIMES) {\n      // Never reach\n      if (!containerRef.current) {\n        setSyncState(function (ori) {\n          return _objectSpread({}, ori);\n        });\n        return;\n      }\n      collectHeight();\n      var targetAlign = syncState.targetAlign,\n        originAlign = syncState.originAlign,\n        index = syncState.index,\n        offset = syncState.offset;\n      var height = containerRef.current.clientHeight;\n      var needCollectHeight = false;\n      var newTargetAlign = targetAlign;\n      var targetTop = null;\n\n      // Go to next frame if height not exist\n      if (height) {\n        var mergedAlign = targetAlign || originAlign;\n\n        // Get top & bottom\n        var stackTop = 0;\n        var itemTop = 0;\n        var itemBottom = 0;\n        var maxLen = Math.min(data.length - 1, index);\n        for (var i = 0; i <= maxLen; i += 1) {\n          var key = getKey(data[i]);\n          itemTop = stackTop;\n          var cacheHeight = heights.get(key);\n          itemBottom = itemTop + (cacheHeight === undefined ? itemHeight : cacheHeight);\n          stackTop = itemBottom;\n        }\n\n        // Check if need sync height (visible range has item not record height)\n        var leftHeight = mergedAlign === 'top' ? offset : height - offset;\n        for (var _i = maxLen; _i >= 0; _i -= 1) {\n          var _key = getKey(data[_i]);\n          var _cacheHeight = heights.get(_key);\n          if (_cacheHeight === undefined) {\n            needCollectHeight = true;\n            break;\n          }\n          leftHeight -= _cacheHeight;\n          if (leftHeight <= 0) {\n            break;\n          }\n        }\n\n        // Scroll to\n        switch (mergedAlign) {\n          case 'top':\n            targetTop = itemTop - offset;\n            break;\n          case 'bottom':\n            targetTop = itemBottom - height + offset;\n            break;\n          default:\n            {\n              var scrollTop = containerRef.current.scrollTop;\n              var scrollBottom = scrollTop + height;\n              if (itemTop < scrollTop) {\n                newTargetAlign = 'top';\n              } else if (itemBottom > scrollBottom) {\n                newTargetAlign = 'bottom';\n              }\n            }\n        }\n        if (targetTop !== null) {\n          syncScrollTop(targetTop);\n        }\n\n        // One more time for sync\n        if (targetTop !== syncState.lastTop) {\n          needCollectHeight = true;\n        }\n      }\n\n      // Trigger next effect\n      if (needCollectHeight) {\n        setSyncState(_objectSpread(_objectSpread({}, syncState), {}, {\n          times: syncState.times + 1,\n          targetAlign: newTargetAlign,\n          lastTop: targetTop\n        }));\n      }\n    } else if (process.env.NODE_ENV !== 'production' && (syncState === null || syncState === void 0 ? void 0 : syncState.times) === MAX_TIMES) {\n      warning(false, 'Seems `scrollTo` with `rc-virtual-list` reach the max limitation. Please fire issue for us. Thanks.');\n    }\n  }, [syncState, containerRef.current]);\n\n  // =========================== Scroll To ===========================\n  return function (arg) {\n    // When not argument provided, we think dev may want to show the scrollbar\n    if (arg === null || arg === undefined) {\n      triggerFlash();\n      return;\n    }\n\n    // Normal scroll logic\n    raf.cancel(scrollRef.current);\n    if (typeof arg === 'number') {\n      syncScrollTop(arg);\n    } else if (arg && _typeof(arg) === 'object') {\n      var index;\n      var align = arg.align;\n      if ('index' in arg) {\n        index = arg.index;\n      } else {\n        index = data.findIndex(function (item) {\n          return getKey(item) === arg.key;\n        });\n      }\n      var _arg$offset = arg.offset,\n        offset = _arg$offset === void 0 ? 0 : _arg$offset;\n      setSyncState({\n        times: 0,\n        index: index,\n        offset: offset,\n        originAlign: align\n      });\n    }\n  };\n}","map":{"version":3,"names":["_typeof","_objectSpread","_slicedToArray","React","raf","useLayoutEffect","warning","MAX_TIMES","useScrollTo","containerRef","data","heights","itemHeight","getKey","collectHeight","syncScrollTop","triggerFlash","scrollRef","useRef","_React$useState","useState","_React$useState2","syncState","setSyncState","times","current","ori","targetAlign","originAlign","index","offset","height","clientHeight","needCollectHeight","newTargetAlign","targetTop","mergedAlign","stackTop","itemTop","itemBottom","maxLen","Math","min","length","i","key","cacheHeight","get","undefined","leftHeight","_i","_key","_cacheHeight","scrollTop","scrollBottom","lastTop","process","env","NODE_ENV","arg","cancel","align","findIndex","item","_arg$offset"],"sources":["C:/Users/Аришина)/Desktop/promo/node_modules/rc-virtual-list/es/hooks/useScrollTo.js"],"sourcesContent":["import _typeof from \"@babel/runtime/helpers/esm/typeof\";\nimport _objectSpread from \"@babel/runtime/helpers/esm/objectSpread2\";\nimport _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\n/* eslint-disable no-param-reassign */\nimport * as React from 'react';\nimport raf from \"rc-util/es/raf\";\nimport useLayoutEffect from \"rc-util/es/hooks/useLayoutEffect\";\nimport { warning } from 'rc-util';\nvar MAX_TIMES = 10;\nexport default function useScrollTo(containerRef, data, heights, itemHeight, getKey, collectHeight, syncScrollTop, triggerFlash) {\n  var scrollRef = React.useRef();\n  var _React$useState = React.useState(null),\n    _React$useState2 = _slicedToArray(_React$useState, 2),\n    syncState = _React$useState2[0],\n    setSyncState = _React$useState2[1];\n\n  // ========================== Sync Scroll ==========================\n  useLayoutEffect(function () {\n    if (syncState && syncState.times < MAX_TIMES) {\n      // Never reach\n      if (!containerRef.current) {\n        setSyncState(function (ori) {\n          return _objectSpread({}, ori);\n        });\n        return;\n      }\n      collectHeight();\n      var targetAlign = syncState.targetAlign,\n        originAlign = syncState.originAlign,\n        index = syncState.index,\n        offset = syncState.offset;\n      var height = containerRef.current.clientHeight;\n      var needCollectHeight = false;\n      var newTargetAlign = targetAlign;\n      var targetTop = null;\n\n      // Go to next frame if height not exist\n      if (height) {\n        var mergedAlign = targetAlign || originAlign;\n\n        // Get top & bottom\n        var stackTop = 0;\n        var itemTop = 0;\n        var itemBottom = 0;\n        var maxLen = Math.min(data.length - 1, index);\n        for (var i = 0; i <= maxLen; i += 1) {\n          var key = getKey(data[i]);\n          itemTop = stackTop;\n          var cacheHeight = heights.get(key);\n          itemBottom = itemTop + (cacheHeight === undefined ? 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void 0 : syncState.times) === MAX_TIMES) {\n      warning(false, 'Seems `scrollTo` with `rc-virtual-list` reach the max limitation. Please fire issue for us. Thanks.');\n    }\n  }, [syncState, containerRef.current]);\n\n  // =========================== Scroll To ===========================\n  return function (arg) {\n    // When not argument provided, we think dev may want to show the scrollbar\n    if (arg === null || arg === undefined) {\n      triggerFlash();\n      return;\n    }\n\n    // Normal scroll logic\n    raf.cancel(scrollRef.current);\n    if (typeof arg === 'number') {\n      syncScrollTop(arg);\n    } else if (arg && _typeof(arg) === 'object') {\n      var index;\n      var align = arg.align;\n      if ('index' in arg) {\n        index = arg.index;\n      } else {\n        index = data.findIndex(function (item) {\n          return getKey(item) === arg.key;\n        });\n      }\n      var _arg$offset = arg.offset,\n        offset = _arg$offset === void 0 ? 0 : _arg$offset;\n      setSyncState({\n        times: 0,\n        index: index,\n        offset: offset,\n        originAlign: align\n      });\n    }\n  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