function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
import { useState, useEffect } from 'react';
import * as React from 'react';

/**
 * useSyncExternalStore 的简易兼容实现 (Polyfill)
 * 用于在 React < 18 的环境中模拟核心功能
 */
var useSyncExternalStoreShim = function useSyncExternalStoreShim(subscribe, getSnapshot) {
  var _useState = useState(getSnapshot),
    _useState2 = _slicedToArray(_useState, 2),
    snapshot = _useState2[0],
    setSnapshot = _useState2[1];
  useEffect(function () {
    var handleChange = function handleChange() {
      var nextSnapshot = getSnapshot();
      setSnapshot(function (prev) {
        // 如果数据引用没变，就不触发更新
        if (Object.is(prev, nextSnapshot)) {
          return prev;
        }
        return nextSnapshot;
      });
    };

    // 订阅变化
    var unsubscribe = subscribe(handleChange);

    // 再次检查，处理在 Effect 执行前可能发生的变化
    handleChange();
    return unsubscribe;
  }, [subscribe, getSnapshot]);
  return snapshot;
};

// 优先使用 React 18 原生 API，如果不存在则使用 Polyfill
var useSyncExternalStore = React.useSyncExternalStore || useSyncExternalStoreShim;
/**
 * 创建一个跨 React 版本兼容的 Store
 * 支持自动浅合并 (Auto Shallow Merge)
 * @param initialState 初始状态
 */
export default function createStore(initialState) {
  var state = initialState;
  var listeners = new Set();
  var getState = function getState() {
    return state;
  };

  /**
   * 更新状态
   * 支持传入部分状态对象进行自动合并
   * 支持传入函数 (prev) => Partial<T>
   */
  var setState = function setState(partial) {
    var partialState = typeof partial === 'function' ? partial(state) : partial;

    // 变更检测：检查是否有任何属性真正发生了变化
    var hasChange = false;
    var keys = Object.keys(partialState);
    for (var _i = 0, _keys = keys; _i < _keys.length; _i++) {
      var key = _keys[_i];
      // 使用 Object.is 进行严格比较，处理 NaN 等特殊情况
      if (!Object.is(partialState[key], state[key])) {
        hasChange = true;
        break;
      }
    }

    // 如果没有实质性变化，直接返回，避免触发不必要的渲染
    if (!hasChange) return;

    // 执行合并
    state = _objectSpread(_objectSpread({}, state), partialState);
    listeners.forEach(function (listener) {
      return listener();
    });
  };
  var subscribe = function subscribe(listener) {
    listeners.add(listener);
    return function () {
      return listeners.delete(listener);
    };
  };

  /**
   * React Hook
   * @param selector 选择器函数，默认返回整个 state
   */
  var useStore = function useStore() {
    var selector = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : function (s) {
      return s;
    };
    return useSyncExternalStore(subscribe, function () {
      return selector(state);
    });
  };

  // 将 API 挂载到 Hook 函数上
  Object.assign(useStore, {
    getState: getState,
    setState: setState,
    subscribe: subscribe
  });
  return useStore;
}