{"ast":null,"code":"function _typeof(obj) {\n  \"@babel/helpers - typeof\";\n\n  if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n    _typeof = function _typeof(obj) {\n      return typeof obj;\n    };\n  } else {\n    _typeof = function _typeof(obj) {\n      return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n    };\n  }\n\n  return _typeof(obj);\n}\n/* eslint-disable no-param-reassign */\n\n\nimport * as React from 'react';\nimport raf from \"rc-util/es/raf\";\nexport default function useScrollTo(containerRef, data, heights, itemHeight, getKey, collectHeight, syncScrollTop, triggerFlash) {\n  var scrollRef = React.useRef();\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    } // Normal scroll logic\n\n\n    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_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n/* eslint-disable no-param-reassign */\nimport * as React from 'react';\nimport raf from \"rc-util/es/raf\";\nexport default function useScrollTo(containerRef, data, heights, itemHeight, getKey, collectHeight, syncScrollTop, triggerFlash) {\n  var scrollRef = React.useRef();\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    } // Normal scroll logic\n\n\n    raf.cancel(scrollRef.current);\n\n    if (typeof arg === 'number') {\n      syncScrollTop(arg);\n    } else if 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scrollBottom) {\n                  newTargetAlign = 'bottom';\n                }\n              }\n          }\n\n          if (targetTop !== null && targetTop !== containerRef.current.scrollTop) {\n            syncScrollTop(targetTop);\n          }\n        } // We will retry since element may not sync height as it described\n\n\n        scrollRef.current = raf(function () {\n          if (needCollectHeight) {\n            collectHeight();\n          }\n\n          syncScroll(times - 1, newTargetAlign);\n        });\n      };\n\n      syncScroll(3);\n    }\n  };\n}"]},"metadata":{},"sourceType":"module"}