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_iterableToArrayLimit(arr, i) { if (typeof Symbol === \"undefined\" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i[\"return\"] != null) _i[\"return\"](); } finally { if (_d) throw _e; } } return _arr; }\n\nfunction _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }\n\nimport * as React from 'react';\nimport { findListDiffIndex } from '../utils/algorithmUtil';\nexport default function useDiffItem(data, getKey, onDiff) {\n  var _React$useState = React.useState(data),\n      _React$useState2 = _slicedToArray(_React$useState, 2),\n      prevData = _React$useState2[0],\n      setPrevData = _React$useState2[1];\n\n  var _React$useState3 = React.useState(null),\n      _React$useState4 = 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