@are-visual/virtual-table/index.esm.js

### VirtualTable

import { jsx, jsxs, Fragment as Fragment$1 } from 'react/jsx-runtime';
import clsx from 'clsx';
import { useRef, createContext, useContext, useMemo, memo, useEffect, useState, useCallback, useLayoutEffect, Fragment, createElement, forwardRef } from 'react';

function _arrayLikeToArray(r, a) {
  (null == a || a > r.length) && (a = r.length);
  for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e];
  return n;
}
function _createForOfIteratorHelperLoose(r, e) {
  var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
  if (t) return (t = t.call(r)).next.bind(t);
  if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e) {
    t && (r = t);
    var o = 0;
    return function () {
      return o >= r.length ? {
        done: true
      } : {
        done: false,
        value: r[o++]
      };
    };
  }
  throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}
function _extends() {
  return _extends = Object.assign ? Object.assign.bind() : function (n) {
    for (var e = 1; e < arguments.length; e++) {
      var t = arguments[e];
      for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]);
    }
    return n;
  }, _extends.apply(null, arguments);
}
function _objectWithoutPropertiesLoose(r, e) {
  if (null == r) return {};
  var t = {};
  for (var n in r) if ({}.hasOwnProperty.call(r, n)) {
    if (-1 !== e.indexOf(n)) continue;
    t[n] = r[n];
  }
  return t;
}
function _unsupportedIterableToArray(r, a) {
  if (r) {
    if ("string" == typeof r) return _arrayLikeToArray(r, a);
    var t = {}.toString.call(r).slice(8, -1);
    return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0;
  }
}

function shallowEqualObjects(objA, objB) {
  if (objA === objB) {
    return true;
  }
  if (!objA || !objB) {
    return false;
  }
  var aKeys = Object.keys(objA);
  var bKeys = Object.keys(objB);
  var len = aKeys.length;
  if (bKeys.length !== len) {
    return false;
  }
  for (var i = 0; i < len; i += 1) {
    var key = aKeys[i];
    if (objA[key] !== objB[key] || !Object.prototype.hasOwnProperty.call(objB, key)) {
      return false;
    }
  }
  return true;
}
function shallowEqualArrays(arrA, arrB) {
  if (arrA === arrB) {
    return true;
  }
  if (!arrA || !arrB) {
    return false;
  }
  var len = arrA.length;
  if (arrB.length !== len) {
    return false;
  }
  for (var i = 0; i < len; i += 1) {
    if (arrA[i] !== arrB[i]) {
      return false;
    }
  }
  return true;
}
function isShallowEqual(value, oldValue) {
  if (Object.is(value, oldValue)) {
    return true;
  }
  if (Array.isArray(value) && Array.isArray(oldValue)) {
    if (shallowEqualArrays(value, oldValue)) {
      return true;
    }
    if (value.length === oldValue.length) {
      var hasObject = value.findIndex(function (x) {
        return typeof x === 'object' && x != null;
      }) > -1;
      if (hasObject) {
        return value.every(function (state, index) {
          if (Array.isArray(state)) {
            return shallowEqualArrays(state, oldValue[index]);
          }
          if (typeof state === 'object' && state != null) {
            return shallowEqualObjects(state, oldValue[index]);
          }
          return Object.is(state, oldValue[index]);
        });
      }
    }
    return false;
  }
  if (value instanceof Map && oldValue instanceof Map) {
    var keys = Array.from(value.keys());
    var oldKeys = Array.from(oldValue.keys());
    if (isShallowEqual(keys, oldKeys)) {
      var values = Array.from(value.values());
      var oldValues = Array.from(oldValue.values());
      if (isShallowEqual(values, oldValues)) {
        return true;
      }
    }
    return false;
  }
  if (typeof value === 'object' && value != null) {
    return shallowEqualObjects(value, oldValue);
  }
  return false;
}

/* eslint-disable react-compiler/react-compiler */
/**
 * 缓存数据（浅比较，如果是数组则对第一层进行浅比较）
 */
function useShallowMemo(pickData) {
  var nextState = pickData();
  var value = useRef(nextState);
  if (!isShallowEqual(nextState, value.current)) {
    value.current = nextState;
  }
  return value.current;
}

function getKey(column) {
  return 'key' in column ? column.key : column.dataIndex;
}
function getRowKey(rowData, rowKey) {
  if (typeof rowKey === 'function') {
    return rowKey(rowData);
  }
  return rowData[rowKey];
}

function isValidFixedLeft(fixed) {
  return fixed === 'left';
}
function isValidFixedRight(fixed) {
  return fixed === 'right';
}
function isValidFixed(fixed) {
  return isValidFixedLeft(fixed) || isValidFixedRight(fixed);
}

var ColumnSizes = /*#__PURE__*/createContext(null);
if (process.env.NODE_ENV === 'development') {
  ColumnSizes.displayName = 'VirtualTable.ColumnSizes';
}
function useColumnSizes() {
  var context = useContext(ColumnSizes);
  if (context == null) {
    throw new Error('useColumnSizes provider not found');
  }
  return context;
}

var Sticky = /*#__PURE__*/createContext(null);
if (process.env.NODE_ENV === 'development') {
  Sticky.displayName = 'VirtualTable.Sticky';
}
function StickyContext(props) {
  var columns = props.columns,
    children = props.children;
  var _useColumnSizes = useColumnSizes(),
    widthList = _useColumnSizes.widthList;
  var columnsFixedRecord = useMemo(function () {
    return columns.map(function (column) {
      var key = getKey(column);
      return {
        key: key,
        fixed: column.fixed
      };
    });
  }, [columns]);
  var stickySizes = useMemo(function () {
    var left = 0;
    var leftOffset = columnsFixedRecord.reduce(function (res, item, index) {
      var fixed = item.fixed,
        key = item.key;
      if (isValidFixedLeft(fixed)) {
        var _widthList$get;
        res[index] = left;
        // eslint-disable-next-line react-compiler/react-compiler
        left += (_widthList$get = widthList.get(key)) != null ? _widthList$get : 0;
      }
      return res;
    }, []);
    var right = 0;
    var rightOffset = columnsFixedRecord.reduceRight(function (res, item, index) {
      var fixed = item.fixed,
        key = item.key;
      if (isValidFixedRight(fixed)) {
        var _widthList$get2;
        res[index] = right;
        right += (_widthList$get2 = widthList.get(key)) != null ? _widthList$get2 : 0;
      }
      return res;
    }, []);
    return columnsFixedRecord.reduce(function (result, item, index) {
      var key = item.key,
        fixed = item.fixed;
      if (isValidFixedLeft(fixed)) {
        result.set(key, leftOffset[index]);
        return result;
      }
      if (isValidFixedRight(fixed)) {
        result.set(key, rightOffset[index]);
        return result;
      }
      return result;
    }, new Map());
  }, [columnsFixedRecord, widthList]);
  var shallowMemoFixedRecord = useShallowMemo(function () {
    return columnsFixedRecord;
  });
  var shallowMemoStickySizes = useShallowMemo(function () {
    return stickySizes;
  });
  var stickyState = useMemo(function () {
    return {
      size: shallowMemoStickySizes,
      fixed: shallowMemoFixedRecord
    };
  }, [shallowMemoFixedRecord, shallowMemoStickySizes]);
  return jsx(Sticky.Provider, {
    value: stickyState,
    children: children
  });
}
function useTableSticky() {
  var context = useContext(Sticky);
  if (context == null) {
    throw new Error('useTableSticky provider not found');
  }
  return context;
}

function pipelineRender(node, render, options) {
  if (typeof render === 'function') {
    // @ts-expect-error: There is no way to declare the type correctly, but it works at runtime.
    return render(node, options);
  }
  return node;
}

var _excluded$3 = ["className", "style", "column", "rowData", "rowIndex", "renderCell"],
  _excluded2$1 = ["className", "style", "colSpan", "rowSpan"];
function getTableCellContent(index, data, column) {
  var _render;
  var render = column.render;
  var rowData = data;
  if ('dataIndex' in column) {
    var dataIndex = column.dataIndex;
    if (typeof render !== 'function') {
      return rowData[dataIndex];
    }
    return render(rowData[dataIndex], data, index);
  }
  return (_render = render == null ? void 0 : render(data, data, index)) != null ? _render : null;
}
function Cell(props) {
  var _onCell;
  var className = props.className,
    style = props.style,
    column = props.column,
    rowData = props.rowData,
    rowIndex = props.rowIndex,
    renderCell = props.renderCell,
    restProps = _objectWithoutPropertiesLoose(props, _excluded$3);
  var align = column.align,
    fixed = column.fixed,
    onCell = column.onCell;
  var key = getKey(column);
  var _useTableSticky = useTableSticky(),
    stickySizes = _useTableSticky.size;
  var _ref = (_onCell = onCell == null ? void 0 : onCell(rowData, rowIndex)) != null ? _onCell : {},
    extraClassName = _ref.className,
    extraStyle = _ref.style,
    colSpan = _ref.colSpan,
    rowSpan = _ref.rowSpan,
    extraProps = _objectWithoutPropertiesLoose(_ref, _excluded2$1);
  if (colSpan === 0 || rowSpan === 0) {
    return null;
  }
  return pipelineRender(jsx("td", _extends({}, restProps, extraProps, {
    colSpan: colSpan,
    rowSpan: rowSpan,
    className: clsx('virtual-table-cell', align != null && "virtual-table-align-" + align, isValidFixed(fixed) && 'virtual-table-sticky-cell', className, column.className, extraClassName),
    style: _extends({}, style, extraStyle, {
      left: isValidFixedLeft(fixed) ? stickySizes.get(key) : undefined,
      right: isValidFixedRight(fixed) ? stickySizes.get(key) : undefined
    }),
    "data-col-key": key,
    children: getTableCellContent(rowIndex, rowData, column)
  })), renderCell, {
    column: column
  });
}
var Cell$1 = /*#__PURE__*/memo(Cell);

function getColumnWidth(column, defaultColumnWidth) {
  return Number.isFinite(column.width) ? column.width : defaultColumnWidth;
}

var Colgroup = function Colgroup(props) {
  var columns = props.columns,
    defaultColumnWidth = props.defaultColumnWidth;
  return jsx("colgroup", {
    children: columns.map(function (item) {
      var key = item.key;
      if (item.type === 'blank') {
        return jsx("col", {
          className: "blank",
          style: {
            width: item.width
          }
        }, key);
      }
      var column = item.column;
      var width = getColumnWidth(column, defaultColumnWidth);
      return jsx("col", {
        "data-col-key": key,
        style: {
          width: width
        }
      }, key);
    })
  });
};
var Colgroup$1 = /*#__PURE__*/memo(Colgroup);

var ContainerSize = /*#__PURE__*/createContext(null);
function useContainerSize() {
  var context = useContext(ContainerSize);
  if (context == null) {
    throw new Error('useContainerSize provider not found');
  }
  return context;
}

var HorizontalScroll = /*#__PURE__*/createContext(null);
if (process.env.NODE_ENV === 'development') {
  HorizontalScroll.displayName = 'VirtualTable.HorizontalScroll';
}
function HorizontalScrollContext(props) {
  var children = props.children;
  var listenerMap = useRef(new Map());
  var context = useMemo(function () {
    var skipEvent = new Set();
    return {
      listen: function listen(key, listener) {
        listenerMap.current.set(key, function (scrollLeft, node) {
          listener(scrollLeft, node);
        });
        return function () {
          listenerMap.current["delete"](key);
        };
      },
      notify: function notify(key, options) {
        if (skipEvent.has(key)) {
          skipEvent["delete"](key);
          return;
        }
        var scrollLeft = options.scrollLeft,
          node = options.node;
        var rAF = window.requestAnimationFrame;
        if (rAF == null) {
          rAF = function rAF(fn) {
            fn();
          };
        }
        listenerMap.current.forEach(function (listener, itemKey) {
          if (key === itemKey) return;
          skipEvent.add(itemKey);
          rAF(function () {
            listener(scrollLeft(), node);
          });
        });
      }
    };
  }, []);
  return jsx(HorizontalScroll.Provider, {
    value: context,
    children: children
  });
}
function useHorizontalScrollContext() {
  var context = useContext(HorizontalScroll);
  if (context == null) {
    throw new Error('useHorizontalScrollContext provider not found');
  }
  return context;
}
function useScrollSynchronize(key) {
  var _useHorizontalScrollC = useHorizontalScrollContext(),
    listen = _useHorizontalScrollC.listen,
    notify = _useHorizontalScrollC.notify;
  var nodeRef = useRef(null);
  useEffect(function () {
    var node = nodeRef.current;
    if (node == null) return;
    var onScroll = function onScroll() {
      notify(key, {
        scrollLeft: function scrollLeft() {
          return node.scrollLeft;
        },
        node: node
      });
    };
    var addEvent = function addEvent() {
      // eslint-disable-next-line @eslint-react/web-api/no-leaked-event-listener
      node.addEventListener('scroll', onScroll, {
        passive: true
      });
    };
    var removeEvent = function removeEvent() {
      node.removeEventListener('scroll', onScroll);
    };
    var dispose = listen(key, function (scrollLeft) {
      node.style.willChange = 'scroll-position';
      node.scrollLeft = scrollLeft;
    });
    addEvent();
    return function () {
      removeEvent();
      dispose();
    };
  }, [key, listen, notify]);
  return nodeRef;
}

var TableRowManager = /*#__PURE__*/createContext(null);
if (process.env.NODE_ENV === 'development') {
  TableRowManager.displayName = 'VirtualTable.RowManager';
}
function useTableRowManager() {
  var context = useContext(TableRowManager);
  if (context == null) {
    throw new Error('useTableRowManager provider not found');
  }
  return context;
}

var overflowStylePatterns = /auto|scroll|overlay|hidden/;
function isElement(node) {
  if (!(node instanceof Node)) {
    return false;
  }
  var ELEMENT_NODE_TYPE = 1;
  return node.nodeType === ELEMENT_NODE_TYPE;
}
function getScrollParent(el, root) {
  var _el$ownerDocument$def;
  if (root === void 0) {
    root = window;
  }
  var node = el;
  while (node !== root && isElement(node)) {
    if (node === document.body) {
      return root;
    }
    var _window$getComputedSt = window.getComputedStyle(node),
      overflow = _window$getComputedSt.overflow,
      overflowY = _window$getComputedSt.overflowY,
      overflowX = _window$getComputedSt.overflowX;
    if (overflowStylePatterns.test(overflow + overflowY + overflowX)) {
      return node;
    }
    node = node.parentNode;
  }
  return (_el$ownerDocument$def = el.ownerDocument.defaultView) != null ? _el$ownerDocument$def : window;
}
function isWindow(arg) {
  return Object.prototype.toString.call(arg) === '[object Window]';
}
function isDocument(arg) {
  return Object.prototype.toString.call(arg) === '[object HTMLDocument]';
}
function isRoot(arg) {
  return Object.prototype.toString.call(arg) === '[object HTMLHtmlElement]';
}
function getScrollElement(el) {
  if (isDocument(el)) {
    return el.scrollingElement;
  }
  if (isElement(el)) {
    return el;
  }
  return document.scrollingElement;
}
function getScrollTop(node) {
  var result = 0;
  if (isWindow(node) || isRoot(node)) {
    result = window.scrollY;
  } else {
    var element = getScrollElement(node);
    result = element.scrollTop;
  }
  return result;
}
function getRelativeOffsetTop(el, ancestor) {
  var elRect = el.getBoundingClientRect();
  var ancestorRect = ancestor.getBoundingClientRect();
  var ancestorBorderTop = Number.parseFloat(window.getComputedStyle(ancestor).borderTopWidth) || 0;
  var ancestorScrollTop = ancestor.scrollTop;
  return elRect.top - ancestorRect.top - ancestorBorderTop + ancestorScrollTop;
}

function onResize(target, callback) {
  if (isWindow(target)) {
    var listener = function listener() {
      callback({
        width: window.innerWidth,
        height: window.innerHeight
      });
    };
    listener();
    window.addEventListener('resize', listener);
    return function () {
      window.removeEventListener('resize', listener);
    };
  } else {
    var observer = new ResizeObserver(function (entries) {
      var rect = entries[0].contentRect;
      callback({
        width: rect.width,
        height: rect.height
      });
    });
    observer.observe(target);
    return function () {
      observer.disconnect();
    };
  }
}

function anchorQuery$1(rects, scrollTop) {
  var left = 0;
  var right = rects.length - 1;
  var index = -1;
  while (left <= right) {
    var mid = Math.floor((left + right) / 2);
    if (rects[mid].bottom > scrollTop) {
      index = mid;
      right = mid - 1;
    } else {
      left = mid + 1;
    }
  }
  if (index === -1) {
    return undefined;
  }
  return rects[index];
}
var NormalRowHeightKey = 'NormalRow';
function useRowVirtualize(options) {
  var getOffsetTop = options.getOffsetTop,
    rowKey = options.rowKey,
    rawData = options.dataSource,
    getScroller = options.getScroller,
    estimateSize = options.estimateSize,
    overscan = options.overscan;
  var _useState = useState(0),
    startIndex = _useState[0],
    setStartIndex = _useState[1];
  var _useState2 = useState(0),
    endIndex = _useState2[0],
    setEndIndex = _useState2[1];
  var dataSlice = useMemo(function () {
    return rawData.slice(startIndex, endIndex);
  }, [rawData, startIndex, endIndex]);
  /**
   * 记录的所有行高信息
   * 一个 Row 可能有多个行高。例如：默认情况下，只有一个行高，展开后，展开面板的高度也被认为是同一个 Row 的
   * 所以可展开时，行高有多个，所有行高之和，则为 Row 的高度
   * 行高之间使用唯一的 key 作为区分
   * Record<rowKey, Map<key, height>>
   */
  var rowHeightByRowKey = useRef(new Map());
  var setRowHeightByRowKey = useCallback(function (rowKey, key, height) {
    var _rowHeightByRowKey$cu;
    var target = (_rowHeightByRowKey$cu = rowHeightByRowKey.current.get(rowKey)) != null ? _rowHeightByRowKey$cu : new Map();
    target.set(key, height);
    rowHeightByRowKey.current.set(rowKey, target);
  }, []);
  var getAllRowHeights = function getAllRowHeights() {
    var heights = [];
    rawData.forEach(function (item) {
      var key = getRowKey(item, rowKey);
      var row = rowHeightByRowKey.current.get(key);
      if (row == null) {
        heights.push(estimateSize);
      } else {
        var height = 0;
        row.forEach(function (x) {
          return height += x;
        });
        heights.push(height);
      }
    });
    return heights;
  };
  // 行高信息（先填充预估高度，DOM渲染后再更新成实际高度）
  var fillRowHeights = function fillRowHeights() {
    if (rawData.length === 0) {
      rowHeightByRowKey.current.clear();
      return;
    }
    rawData.forEach(function (item) {
      var _rowHeightByRowKey$cu2;
      var key = getRowKey(item, rowKey);
      var row = (_rowHeightByRowKey$cu2 = rowHeightByRowKey.current.get(key)) != null ? _rowHeightByRowKey$cu2 : new Map();
      var target = row.get(NormalRowHeightKey);
      if (target == null) {
        row.set(NormalRowHeightKey, estimateSize);
      }
      rowHeightByRowKey.current.set(key, row);
    });
  };
  fillRowHeights();
  // 强制设置类型为 number[]，在后面会初始化，只是为了减少 getAllRowHeights 的调用
  var rowHeights = useRef();
  // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
  if (rowHeights.current == null) {
    rowHeights.current = getAllRowHeights();
  } else if (rawData.length !== rowHeights.current.length) {
    // 这个判断条件主要是为了处理：空数据切换为有数据时 tbody 上 padding 缺失的问题
    rowHeights.current = getAllRowHeights();
  }
  // 布局信息（也就是锚点元素需要的信息，top,bottom,height,index）
  var rowRects = useRef([]);
  var updateRowRects = function updateRowRects() {
    var _rawData$reduce = rawData.reduce(function (result, rowData, index) {
        var _rowHeightByRowKey$cu3;
        var key = getRowKey(rowData, rowKey);
        var height = 0;
        (_rowHeightByRowKey$cu3 = rowHeightByRowKey.current.get(key)) == null || _rowHeightByRowKey$cu3.forEach(function (item) {
          height += item;
        });
        var nextTop = result.top + height;
        result.rects.push({
          index: index,
          top: result.top,
          height: height,
          bottom: nextTop
        });
        result.top = nextTop;
        return result;
      }, {
        top: 0,
        rects: []
      }),
      rects = _rawData$reduce.rects;
    rowRects.current = rects;
  };
  /** 刷新布局信息，行高变化的时候调用，要重新组织布局信息(rowRects) */
  var flushLayout = function flushLayout(fn) {
    fn == null || fn();
    updateRowRects();
    // 组件渲染后会触发 flushLayout，表示行高有更新所以需要更新一下 rowHeights
    // 避免展开行之后记录的还是之前的行高信息，否则滚动后底部会出现空白区域
    rowHeights.current = rowRects.current.map(function (x) {
      return x.height;
    });
  };
  // 锚点元素，当前虚拟列表中，最接近滚动容器顶部的元素
  var anchorRef = useRef({
    index: 0,
    height: estimateSize,
    top: 0,
    bottom: estimateSize
  });
  // 用来判断滚动方向
  var scrollTopRef = useRef(0);
  var initial = useRef(false);
  useEffect(function () {
    var container = getScroller();
    if (container == null) return;
    var count = 0;
    var getScrollTop = function getScrollTop() {
      var offsetTop = getOffsetTop();
      var result = 0;
      if (isWindow(container) || isRoot(container)) {
        result = window.scrollY;
      } else {
        var element = getScrollElement(container);
        result = element.scrollTop;
      }
      return Math.max(result - offsetTop, 0);
    };
    var calcCount = function calcCount(scrollerContainerHeight) {
      var prevCount = count;
      count = Math.ceil(scrollerContainerHeight / estimateSize);
      return {
        prevCount: prevCount
      };
    };
    var updateBoundary = function updateBoundary(scrollTop) {
      var anchor = anchorQuery$1(rowRects.current, scrollTop);
      if (anchor != null) {
        anchorRef.current = anchor;
        setStartIndex(Math.max(0, anchor.index - overscan));
        setEndIndex(anchor.index + count + overscan);
      }
    };
    var onScroll = function onScroll(e) {
      var offsetTop = getOffsetTop();
      var scrollElement = getScrollElement(e.target);
      var scrollTop = Math.max(0, scrollElement.scrollTop - offsetTop);
      // 是否为向下滚动
      var isScrollDown = scrollTop > scrollTopRef.current;
      if (isScrollDown) {
        // 如果滚动距离比较小，没有超出锚点元素的边界，就不需要计算 startIndex、endIndex 了
        if (scrollTop > anchorRef.current.bottom) {
          updateBoundary(scrollTop);
        }
      } else {
        if (scrollTop < anchorRef.current.top) {
          updateBoundary(scrollTop);
        }
      }
      scrollTopRef.current = scrollTop;
    };
    var prevHeight = 0;
    var stopListen = onResize(container, function (rect) {
      // 处理父元素 display:none 容器高度丢失，导致显示 row 不准确
      if (rect.height === prevHeight || rect.height === 0) {
        return;
      }
      prevHeight = rect.height;
      calcCount(rect.height);
      var scrollTop = getScrollTop();
      if (!initial.current) {
        initial.current = true;
        var nextStartIndex = 0;
        // 判断一下当前滚动位置，计算 startIndex（场景：SPA 页面切换且渲染非异步数据）
        if (scrollTop >= estimateSize) {
          nextStartIndex = Math.max(Math.floor(scrollTop / estimateSize) - 1 - overscan, 0);
        }
        var nextEndIndex = nextStartIndex + count + overscan;
        setStartIndex(nextStartIndex);
        setEndIndex(nextEndIndex);
      } else {
        updateBoundary(scrollTop);
      }
    });
    container.addEventListener('scroll', onScroll);
    return function () {
      stopListen();
      container.removeEventListener('scroll', onScroll);
    };
  }, [estimateSize, getOffsetTop, getScroller, overscan]);
  var sum = function sum(startIndex, endIndex) {
    return rowHeights.current.slice(startIndex, endIndex).reduce(function (a, b) {
      return a + b;
    }, 0);
  };
  // TODO: React Compiler 测试 topBlank 和 bottomBlank
  var topBlank = sum(0, startIndex);
  var bottomBlank = sum(endIndex);
  return {
    startIndex: startIndex,
    endIndex: endIndex,
    rowHeightList: rowHeights,
    flushLayout: flushLayout,
    rowHeightByRowKey: rowHeightByRowKey,
    setRowHeightByRowKey: setRowHeightByRowKey,
    topBlank: topBlank,
    bottomBlank: bottomBlank,
    dataSlice: dataSlice
  };
}

// eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
function useStableFn(callback) {
  var fn = useRef(null);
  useLayoutEffect(function () {
    fn.current = callback;
  });
  var stableFn = useCallback(function () {
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }
    return fn.current == null ? void 0 : fn.current.apply(fn, args);
  }, []);
  return stableFn;
}

var TableInstance = /*#__PURE__*/function () {
  function TableInstance() {
    this.getInstance = this.getInstance.bind(this);
  }
  var _proto = TableInstance.prototype;
  _proto.getInstance = function getInstance() {
    var buildInMethods = ['getCurrentProps', 'getColumns', 'getDataSource', 'getDOM', 'getRowHeightMap', 'getRowVirtualizeState', 'getScrollValueByRowIndex', 'getScrollValueByColumnKey', 'scrollToRow', 'scrollToColumn', 'scrollTo', 'getColumnByKey', 'getColumnByIndex', 'getColumnKeyByIndex', 'getColumnWidths', 'getColumnWidthByKey'];
    var extendInstance = _extends({}, buildInMethods.reduce(function (result, fnName) {
      result[fnName] = function () {
        throw new Error(fnName + "() has not been implemented yet");
      };
      return result;
    }, {}), {
      extend: function extend(args) {
        Object.keys(args).forEach(function (fnName) {
          extendInstance[fnName] = args[fnName];
        });
      }
    });
    return extendInstance;
  };
  return TableInstance;
}();
function useTableInstance(instance) {
  var _useState = useState(function () {
      if (instance == null) {
        return new TableInstance().getInstance();
      }
      return instance;
    }),
    state = _useState[0];
  return state;
}

/**
 * 创建中间件，内部会浅比较 options，只有 options 改变才会返回新的函数。
 */
function createMiddleware(hook) {
  var cache = {
    current: null,
    options: null
  };
  return function () {
    for (var _len = arguments.length, options = new Array(_len), _key = 0; _key < _len; _key++) {
      options[_key] = arguments[_key];
    }
    var useMiddleware = function useMiddleware(ctx) {
      return hook.apply(void 0, [ctx].concat(options));
    };
    if (isShallowEqual(options, cache.options)) {
      var _cache$current;
      return (_cache$current = cache.current) != null ? _cache$current : useMiddleware;
    }
    cache.options = options;
    cache.current = useMiddleware;
    return useMiddleware;
  };
}

var _excluded$2 = ["render", "renderRoot", "renderContent", "renderHeaderWrapper", "renderHeaderRoot", "renderHeader", "renderHeaderRow", "renderHeaderCell", "renderBodyWrapper", "renderBodyRoot", "renderBody", "renderBodyContent", "renderRow", "renderCell", "rowClassName", "onRow"];
function shakeUnsafeHooks(hooks) {
  if (Array.isArray(hooks)) {
    return hooks.filter(function (x) {
      return x != null && (typeof x === 'function' || typeof x.hook === 'function');
    }).map(function (hook) {
      if (typeof hook === 'function') {
        return {
          priority: 100,
          hook: hook
        };
      }
      return hook;
    });
  }
  return [];
}
var TablePipeline = /*#__PURE__*/function () {
  function TablePipeline() {
    Object.defineProperty(this, "hooks", {
      enumerable: true,
      configurable: true,
      writable: true,
      value: []
    });
    this.use = this.use.bind(this);
  }
  var _proto = TablePipeline.prototype;
  _proto.setHooks = function setHooks(value) {
    this.hooks = value;
  };
  _proto.use = function use(options) {
    if (this.hooks.length === 0) {
      return options;
    }
    var context = {
      current: options
    };
    var renderFunctionMap = {
      render: [],
      renderRoot: [],
      renderContent: [],
      renderHeaderWrapper: [],
      renderHeaderRoot: [],
      renderHeader: [],
      renderHeaderRow: [],
      renderHeaderCell: [],
      renderBodyWrapper: [],
      renderBodyRoot: [],
      renderBody: [],
      renderBodyContent: [],
      renderRow: [],
      renderCell: []
    };
    var rowClassNameFunctions = [];
    var onRowFunctions = [];
    var hooks = this.hooks.slice();
    hooks.sort(function (a, b) {
      return a.priority - b.priority;
    });
    hooks.map(function (x) {
      return x.hook;
    }).forEach(function (hook) {
      var nextCtx = hook(context.current);
      nextCtx.render;
        nextCtx.renderRoot;
        nextCtx.renderContent;
        nextCtx.renderHeaderWrapper;
        nextCtx.renderHeaderRoot;
        nextCtx.renderHeader;
        nextCtx.renderHeaderRow;
        nextCtx.renderHeaderCell;
        nextCtx.renderBodyWrapper;
        nextCtx.renderBodyRoot;
        nextCtx.renderBody;
        nextCtx.renderBodyContent;
        nextCtx.renderRow;
        nextCtx.renderCell;
        var rowClassName = nextCtx.rowClassName,
        onRow = nextCtx.onRow,
        rest = _objectWithoutPropertiesLoose(nextCtx, _excluded$2);
      Object.entries(renderFunctionMap).forEach(function (_ref) {
        var key = _ref[0],
          value = _ref[1];
        var target = nextCtx[key];
        if (typeof target === 'function') {
          // @ts-expect-error: There is no way to declare the type correctly, but it works at runtime.
          value.push(target);
        }
      });
      if (typeof rowClassName === 'function') {
        rowClassNameFunctions.push(rowClassName);
      }
      if (typeof onRow === 'function') {
        onRowFunctions.push(onRow);
      }
      context.current = rest;
    });
    Object.entries(renderFunctionMap).forEach(function (_ref2) {
      var key = _ref2[0],
        renders = _ref2[1];
      if (renders.length > 0) {
        context.current[key] = function (children, args) {
          // reduce 把 [render1, render2] 转为 render2(render1(children))
          return renders.reduce(function (node, render) {
            // @ts-expect-error: There is no way to declare the type correctly, but it works at runtime.
            return render(node, args);
          }, children);
        };
      }
    });
    if (rowClassNameFunctions.length > 0) {
      context.current.rowClassName = function (record, index) {
        return clsx.apply(void 0, rowClassNameFunctions.map(function (fn) {
          return fn(record, index);
        }));
      };
    }
    if (onRowFunctions.length > 0) {
      context.current.onRow = function (record, index) {
        return onRowFunctions.reduce(function (result, item) {
          return _extends({}, result, item(record, index));
        }, {});
      };
    }
    return context.current;
  };
  return TablePipeline;
}();
Object.defineProperty(TablePipeline, "defaultPipeline", {
  enumerable: true,
  configurable: true,
  writable: true,
  value: new TablePipeline()
});

function useTablePipeline(options) {
  var use = options.use,
    extraPipeline = options.pipeline;
  var cached = useMemo(function () {
    return {
      current: new TablePipeline()
    };
  }, []);
  if (use != null) {
    var _extraPipeline$hooks;
    var nextHooks = shakeUnsafeHooks([].concat(use, (_extraPipeline$hooks = extraPipeline == null ? void 0 : extraPipeline.hooks) != null ? _extraPipeline$hooks : []));
    if (!shallowEqualArrays(cached.current.hooks, nextHooks)) {
      var pipeline = new TablePipeline();
      pipeline.setHooks(nextHooks);
      cached.current = pipeline;
      return pipeline;
    }
  }
  return cached.current;
}

function findLastIndex(arr, predicate) {
  var result = -1;
  for (var i = 0; i < arr.length; i += 1) {
    if (predicate(arr[i], i)) {
      result = i;
    }
  }
  return result;
}

var _excluded$1 = ["className", "rowKey", "rowIndex", "rowData", "columns", "onRow", "renderRow", "renderCell", "onRefCallback"],
  _excluded2 = ["className"];
function Row(props) {
  var _onRow;
  var className = props.className,
    rowKey = props.rowKey,
    rowIndex = props.rowIndex,
    rowData = props.rowData,
    columnDescriptor = props.columns,
    onRow = props.onRow,
    renderRow = props.renderRow,
    renderCell = props.renderCell,
    onRefCallback = props.onRefCallback,
    rest = _objectWithoutPropertiesLoose(props, _excluded$1);
  var columns = columnDescriptor.columns,
    descriptor = columnDescriptor.descriptor;
  var lastFixedLeftColumnIndex = findLastIndex(descriptor, function (x) {
    if (x.type === 'blank') {
      return false;
    }
    return isValidFixedLeft(x.column.fixed);
  });
  var firstFixedRightColumnIndex = descriptor.findIndex(function (x) {
    if (x.type === 'blank') {
      return false;
    }
    return isValidFixedRight(x.column.fixed);
  });
  var _ref = (_onRow = onRow == null ? void 0 : onRow(rowData, rowIndex)) != null ? _onRow : {},
    extraClassName = _ref.className,
    extraProps = _objectWithoutPropertiesLoose(_ref, _excluded2);
  return pipelineRender(jsx("tr", _extends({}, rest, extraProps, {
    className: clsx('virtual-table-row', className, extraClassName),
    "data-row-index": rowIndex,
    ref: function ref(node) {
      onRefCallback == null || onRefCallback({
        node: node,
        rowKey: rowKey,
        rowIndex: rowIndex,
        rowData: rowData
      });
    },
    children: descriptor.map(function (item, index) {
      var key = item.key;
      if (item.type === 'blank') {
        return jsx("td", {}, key);
      }
      var column = item.column;
      return jsx(Cell$1, {
        className: clsx(lastFixedLeftColumnIndex === index && 'virtual-table-cell-fix-left-last', firstFixedRightColumnIndex === index && 'virtual-table-cell-fix-right-first'),
        column: column,
        rowIndex: rowIndex,
        rowData: rowData,
        renderCell: renderCell
      }, key);
    })
  })), renderRow, {
    columns: columns,
    rowKey: rowKey,
    rowIndex: rowIndex,
    rowData: rowData,
    columnDescriptor: descriptor
  });
}
var Row$1 = /*#__PURE__*/memo(Row);

function assignRef(ref, value) {
  if (typeof ref === 'function') {
    ref(value);
  } else if (typeof ref === 'object' && ref !== null && 'current' in ref) {
    ref.current = value;
  }
}
function mergeRefs() {
  for (var _len = arguments.length, refs = new Array(_len), _key = 0; _key < _len; _key++) {
    refs[_key] = arguments[_key];
  }
  return function (node) {
    refs.forEach(function (ref) {
      return assignRef(ref, node);
    });
  };
}
function useMergedRef() {
  for (var _len2 = arguments.length, refs = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
    refs[_key2] = arguments[_key2];
  }
  // eslint-disable-next-line react-compiler/react-compiler
  return useCallback(mergeRefs.apply(void 0, refs), refs);
}

function TableBody(props) {
  var bodyWrapperRef = props.bodyWrapperRef,
    bodyRootRef = props.bodyRootRef,
    bodyRef = props.bodyRef,
    className = props.className,
    style = props.style,
    defaultColumnWidth = props.defaultColumnWidth,
    rawData = props.dataSource,
    columnDescriptor = props.columns,
    rowKey = props.rowKey,
    instance = props.instance,
    overscan = props.overscan,
    estimateSize = props.estimateSize,
    getScroller = props.getScroller,
    getOffsetTop = props.getOffsetTop,
    rowClassName = props.rowClassName,
    onRow = props.onRow,
    renderBodyWrapper = props.renderBodyWrapper,
    renderBodyRoot = props.renderBodyRoot,
    renderBody = props.renderBody,
    renderBodyContent = props.renderBodyContent,
    renderRow = props.renderRow,
    renderCell = props.renderCell;
  var _useRowVirtualize = useRowVirtualize({
      getOffsetTop: getOffsetTop,
      rowKey: rowKey,
      dataSource: rawData,
      getScroller: getScroller,
      estimateSize: estimateSize,
      overscan: overscan
    }),
    startIndex = _useRowVirtualize.startIndex,
    endIndex = _useRowVirtualize.endIndex,
    dataSource = _useRowVirtualize.dataSlice,
    rowHeightByRowKey = _useRowVirtualize.rowHeightByRowKey,
    setRowHeightByRowKey = _useRowVirtualize.setRowHeightByRowKey,
    flushLayout = _useRowVirtualize.flushLayout,
    rowHeightList = _useRowVirtualize.rowHeightList,
    topBlank = _useRowVirtualize.topBlank,
    bottomBlank = _useRowVirtualize.bottomBlank;
  instance.extend({
    getRowVirtualizeState: function getRowVirtualizeState() {
      return {
        startIndex: startIndex,
        endIndex: endIndex,
        overscan: overscan,
        estimateSize: estimateSize
      };
    },
    getRowHeightMap: function getRowHeightMap() {
      return rowHeightByRowKey.current;
    }
  });
  var tbodyRef = useMergedRef(bodyRef, function (elm) {
    if (elm == null) return;
    var bodyHeight = elm.offsetHeight;
    if (bodyHeight === 0) return;
    // body 的 ref 回调函数中，说明 body 渲染完成，也就意味着所有的 tr 也已经渲染完成，
    // 现在可以记录所有 tr 的高度
    flushLayout();
  });
  // 测量行高
  var onMeasureRowHeight = useCallback(function (args) {
    var node = args.node,
      rowKey = args.rowKey;
    if (node == null) return;
    // 小心陷阱：当 table 父元素为 display: none 时，依然会触发，并设置高度为 0
    setRowHeightByRowKey(rowKey, NormalRowHeightKey, node.offsetHeight);
  }, [setRowHeightByRowKey]);
  var columns = columnDescriptor.columns,
    descriptor = columnDescriptor.descriptor;
  var bodyContent = pipelineRender(dataSource.map(function (e, rowIndex) {
    var key = getRowKey(e, rowKey);
    return jsx(Row$1, {
      className: clsx(rowClassName == null ? void 0 : rowClassName(e, rowIndex)),
      rowKey: key,
      rowIndex: rowIndex + startIndex,
      rowData: e,
      columns: columnDescriptor,
      onRow: onRow,
      renderRow: renderRow,
      renderCell: renderCell,
      onRefCallback: onMeasureRowHeight
    }, key);
  }), renderBodyContent, {
    columns: columns,
    columnDescriptor: descriptor,
    startRowIndex: startIndex
  });
  var bodyNode = pipelineRender(jsx("tbody", {
    ref: tbodyRef,
    children: bodyContent
  }), renderBody, {
    columns: columns,
    columnDescriptor: descriptor,
    startRowIndex: startIndex
  });
  var tableNode = pipelineRender(jsxs("table", {
    className: clsx(className, 'virtual-table-body'),
    style: _extends({}, style, {
      paddingBottom: bottomBlank,
      paddingTop: topBlank
    }),
    ref: bodyRootRef,
    children: [jsx(Colgroup$1, {
      columns: descriptor,
      defaultColumnWidth: defaultColumnWidth
    }), bodyNode]
  }), renderBodyRoot, {
    columns: columns,
    columnDescriptor: descriptor,
    startRowIndex: startIndex
  });
  var wrapperRef = useScrollSynchronize('virtual-table-body');
  var mergedRef = useMergedRef(wrapperRef, bodyWrapperRef);
  // 滚动到指定行。注意：如果 estimatedRowHeight 不够准确时，不一定能准确滚动到目标位置
  instance.extend({
    getScrollValueByRowIndex: function getScrollValueByRowIndex(index) {
      var scroller = getScroller();
      if (scroller == null) {
        return 0;
      }
      var _instance$getCurrentP = instance.getCurrentProps(),
        stickyHeader = _instance$getCurrentP.stickyHeader;
      var _instance$getDOM = instance.getDOM(),
        headerWrapper = _instance$getDOM.headerWrapper;
      var offset = 0;
      // 没有 sticky，就要计算 header 高度
      if (stickyHeader == null || stickyHeader === false) {
        var headerOffsetHeight = headerWrapper == null ? 0 : headerWrapper.offsetHeight;
        offset = headerOffsetHeight;
      } else {
        offset = Number.isFinite(stickyHeader) ? stickyHeader * -1 : 0;
      }
      var targetScrollTop = rowHeightList.current.slice(0, index).reduce(function (a, b) {
        return a + b;
      }, 0);
      return targetScrollTop + getOffsetTop() + offset;
    },
    scrollToRow: function scrollToRow(index, behavior) {
      instance.scrollTo({
        top: instance.getScrollValueByRowIndex(index),
        behavior: behavior
      });
    }
  });
  var rowManageState = useMemo(function () {
    return {
      setRowHeightByRowKey: setRowHeightByRowKey,
      getRowHeightList: function getRowHeightList() {
        return rowHeightList.current;
      }
    };
  }, [rowHeightList, setRowHeightByRowKey]);
  return jsx(TableRowManager.Provider, {
    value: rowManageState,
    children: pipelineRender(jsx("div", {
      ref: mergedRef,
      className: "virtual-table-body-wrapper",
      children: tableNode
    }), renderBodyWrapper, {
      columns: columns,
      columnDescriptor: descriptor,
      startRowIndex: startIndex
    })
  });
}

var _excluded = ["className", "style"];
var TableHeader = function TableHeader(props) {
  var className = props.className,
    style = props.style,
    defaultColumnWidth = props.defaultColumnWidth,
    wrapperRef = props.wrapperRef,
    columnDescriptor = props.columns,
    stickyHeader = props.stickyHeader,
    renderHeaderWrapper = props.renderHeaderWrapper,
    renderHeaderRoot = props.renderHeaderRoot,
    renderHeader = props.renderHeader,
    renderHeaderRow = props.renderHeaderRow,
    renderHeaderCell = props.renderHeaderCell;
  var columns = columnDescriptor.columns,
    descriptor = columnDescriptor.descriptor;
  var lastColumn = columns[columns.length - 1];
  var _useColumnSizes = useColumnSizes(),
    widthList = _useColumnSizes.widthList;
  var _useTableSticky = useTableSticky(),
    stickySizes = _useTableSticky.size;
  var lastFixedLeftColumnIndex = findLastIndex(descriptor, function (x) {
    if (x.type === 'blank') {
      return false;
    }
    return isValidFixedLeft(x.column.fixed);
  });
  var firstFixedRightColumnIndex = descriptor.findIndex(function (x) {
    if (x.type === 'blank') {
      return false;
    }
    return isValidFixedRight(x.column.fixed);
  });
  var headerWrapperRef = useScrollSynchronize('virtual-table-header');
  var row = pipelineRender(jsx("tr", {
    children: descriptor.map(function (item, index) {
      var _column$onHeaderCell;
      var key = item.key;
      if (item.type === 'blank') {
        return jsx("th", {
          "data-blank": true
        }, key);
      }
      var column = item.column;
      if (column.colSpan === 0) {
        return null;
      }
      var isLast = getKey(lastColumn) === key;
      var _ref = (_column$onHeaderCell = column.onHeaderCell == null ? void 0 : column.onHeaderCell(column, index)) != null ? _column$onHeaderCell : {},
        thClassName = _ref.className,
        thStyle = _ref.style,
        rest = _objectWithoutPropertiesLoose(_ref, _excluded);
      return jsx(Fragment, {
        children: pipelineRender(/*#__PURE__*/createElement('th', _extends({
          scope: 'col'
        }, rest, {
          colSpan: column.colSpan,
          className: clsx('virtual-table-header-cell', isLast && 'no-split', column.align != null && "virtual-table-align-" + column.align, isValidFixed(column.fixed) && 'virtual-table-sticky-cell', lastFixedLeftColumnIndex === index && 'virtual-table-cell-fix-left-last', firstFixedRightColumnIndex === index && 'virtual-table-cell-fix-right-first', column.className, thClassName),
          style: _extends({}, thStyle, {
            left: isValidFixedLeft(column.fixed) ? stickySizes.get(key) : undefined,
            right: isValidFixedRight(column.fixed) ? stickySizes.get(key) : undefined
          })
        }), column.title), renderHeaderCell, {
          column: column,
          columns: columns,
          columnWidths: widthList,
          columnDescriptor: descriptor
        })
      }, key);
    })
  }), renderHeaderRow, {
    columns: columns,
    columnDescriptor: descriptor
  });
  var theadNode = pipelineRender(jsx("thead", {
    className: "virtual-table-thead",
    children: row
  }), renderHeader, {
    columns: columns,
    columnDescriptor: descriptor
  });
  var tableNode = pipelineRender(jsxs("table", {
    style: style,
    children: [jsx(Colgroup$1, {
      columns: descriptor,
      defaultColumnWidth: defaultColumnWidth
    }), theadNode]
  }), renderHeaderRoot, {
    columns: columns,
    columnDescriptor: descriptor
  });
  var mergedRef = useMergedRef(wrapperRef, headerWrapperRef);
  return pipelineRender(jsx("div", {
    ref: mergedRef,
    className: clsx('virtual-table-header', className, {
      'virtual-table-header-sticky': stickyHeader
    }),
    style: {
      top: Number.isFinite(stickyHeader) ? stickyHeader : undefined
    },
    children: tableNode
  }), renderHeaderWrapper, {
    columns: columns,
    columnDescriptor: descriptor
  });
};
var TableHeader$1 = /*#__PURE__*/memo(TableHeader);

function useCalcSize(options) {
  var getScroller = options.getScroller,
    root = options.root;
  var _useState = useState(0),
    scrollContainerWidth = _useState[0],
    setScrollContainerWidth = _useState[1];
  var _useState2 = useState(0),
    scrollContainerHeight = _useState2[0],
    setScrollContainerHeight = _useState2[1];
  var _useState3 = useState(800),
    tableWidth = _useState3[0],
    setTableWidth = _useState3[1]; // 设置一个默认值（因为这两个默认值很快就会被覆盖）
  var _useState4 = useState(600),
    tableHeight = _useState4[0],
    setTableHeight = _useState4[1]; // 设置一个默认值（因为这两个默认值很快就会被覆盖）
  var scrollerContainerRef = useRef(null);
  useLayoutEffect(function () {
    var scrollerContainer = getScroller();
    if (scrollerContainer == null) return;
    var scroller;
    if (isWindow(scrollerContainer)) {
      scroller = document.scrollingElement;
    } else {
      scroller = scrollerContainer;
    }
    scrollerContainerRef.current = scroller;
    var observer = new ResizeObserver(function (entries) {
      var _entries$0$contentRec = entries[0].contentRect,
        width = _entries$0$contentRec.width,
        height = _entries$0$contentRec.height;
      setScrollContainerWidth(width);
      setScrollContainerHeight(height);
    });
    observer.observe(scroller);
    return function () {
      observer.disconnect();
    };
  }, [getScroller]);
  useLayoutEffect(function () {
    var node = root.current;
    if (node == null) return;
    var observer = new ResizeObserver(function (entries) {
      var _entries$0$contentRec2 = entries[0].contentRect,
        width = _entries$0$contentRec2.width,
        height = _entries$0$contentRec2.height;
      setTableWidth(width);
      setTableHeight(height);
    });
    observer.observe(node);
    return function () {
      observer.disconnect();
    };
  }, [root]);
  var state = useMemo(function () {
    return {
      scrollContainerWidth: scrollContainerWidth,
      scrollContainerHeight: scrollContainerHeight,
      tableWidth: tableWidth,
      tableHeight: tableHeight
    };
  }, [scrollContainerWidth, scrollContainerHeight, tableWidth, tableHeight]);
  return state;
}

function useCollectColumnWidth(columns, defaultColumnWidth) {
  var widths = useMemo(function () {
    return columns.reduce(function (result, column) {
      var width = getColumnWidth(column, defaultColumnWidth);
      result.set(getKey(column), width);
      return result;
    }, new Map());
  }, [columns, defaultColumnWidth]);
  return useShallowMemo(function () {
    return widths;
  });
}

function anchorQuery(rects, scrollLeft) {
  var left = 0;
  var right = rects.length - 1;
  var index = -1;
  while (left <= right) {
    var mid = Math.floor((left + right) / 2);
    if (rects[mid].right > scrollLeft) {
      index = mid;
      right = mid - 1;
    } else {
      left = mid + 1;
    }
  }
  if (index === -1) {
    return undefined;
  }
  return rects[index];
}
function findFirstFixedRightIndex(columns) {
  var index = -1;
  for (var i = columns.length - 1; i >= 0; i--) {
    var column = columns[i];
    if (isValidFixedRight(column.fixed)) {
      index = i;
    } else {
      break;
    }
  }
  return index;
}
function findLastFixedLeftIndex(columns) {
  return findLastIndex(columns, function (x) {
    return isValidFixedLeft(x.fixed);
  });
}
function useColumnVirtualize(options) {
  var estimateSize = options.estimateSize,
    defaultColumnWidth = options.defaultColumnWidth,
    overscan = options.overscan,
    rawColumns = options.columns,
    containerWidth = options.containerWidth,
    bodyWrapper = options.bodyWrapper,
    _options$disabled = options.disabled,
    disabled = _options$disabled === void 0 ? false : _options$disabled;
  var lastFixedLeftIndex = findLastFixedLeftIndex(rawColumns);
  var firstFixedRightIndex = findFirstFixedRightIndex(rawColumns);
  var leftKey = lastFixedLeftIndex > -1 ? getKey(rawColumns[lastFixedLeftIndex]) : null;
  var rightKey = firstFixedRightIndex > -1 ? getKey(rawColumns[firstFixedRightIndex]) : null;
  var _useState = useState(0),
    startIndex = _useState[0],
    setStartIndex = _useState[1];
  var _useState2 = useState(0),
    endIndex = _useState2[0],
    setEndIndex = _useState2[1];
  var rects = useMemo(function () {
    if (disabled) {
      return [];
    }
    var left = 0;
    return rawColumns.map(function (column, index) {
      var width = getColumnWidth(column, defaultColumnWidth);
      var right = left + width;
      var rect = {
        index: index,
        width: width,
        left: left,
        right: right
      };
      left = right;
      return rect;
    });
  }, [disabled, rawColumns, defaultColumnWidth]);
  // 锚点元素
  var anchorRef = useRef({
    index: 0,
    width: estimateSize,
    left: 0,
    right: estimateSize
  });
  var findAnchorRef = useStableFn(function (scrollLeft) {
    return anchorQuery(rects, scrollLeft);
  });
  var updateBoundary = useStableFn(function (scrollLeft, count) {
    var anchor = findAnchorRef(scrollLeft);
    if (anchor != null) {
      anchorRef.current = anchor;
      setStartIndex(Math.max(0, anchor.index - overscan));
      setEndIndex(anchor.index + count + overscan);
    }
  });
  // 用来判断滚动方向
  var scrollLeftRef = useRef(0);
  useEffect(function () {
    if (disabled) return;
    var scrollContainer = bodyWrapper.current;
    if (scrollContainer == null) return;
    var count = Math.ceil(containerWidth / estimateS