fix: fix the name of mapWatcher in type.d.ts

src/index.ts

@@ -1,2 +1,3 @@
 export { default as mapAlovaHook } from './mapAlovaHook';
+export { default as mapWatcher } from './mapWatcher';
 export { default as VueOptionsHook } from './stateHook';

typings/index.d.ts

@@ -35,5 +35,45 @@ interface VueHookMapperMixin<GR extends UseHookCallers> {
  */
 declare function mapAlovaHook<GR extends UseHookCallers>(mapGetter: UseHookMapGetter<GR>): VueHookMapperMixin<GR>[];
 
-/** vue options statesHook */
+type VueWatchHandler = WatchOptionsWithHandler<any> | WatchHandler<any>;
+type AlovaWatcherHandlers = Record<string, VueWatchHandler | Record<string, VueWatchHandler>>;
+
+/**
+ * 映射状态到watch对象上，使用方法如下
+ * @example
+ * ```js
+ * import { mapWatcher } from '@alova/vue-options';
+ *
+ * export default {
+ *   watch: {
+ *     ...mapWatcher({
+ *       // 映射单个watcher
+ *       'hookState1.loading'(newVal, oldVal) {},
+ *       hookState1: {
+ *         loading(newVal, oldVal) {},
+ *         data(newVal, oldVal) {},
+ *       },
+ *
+ *       // 映射多个watcher
+ *       'hookState1.data, hookState2.data'(newVal, oldVal) {},
+ *       'hookState1, hookState2': {
+ *         data(newVal, oldVal) {},
+ *       },
+ *       hookState2: {
+ *         'loading, data'(newVal, oldVal) {},
+ *       },
+ *       'hookState1, hookState2': {
+ *         'loading, data'(newVal, oldVal) {},
+ *       },
+ *     })
+ *   }
+ * }
+ * ```
+ * @param watcherHandlers watcher函数对象
+ */
+declare function mapWatcher(watcherHandlers: AlovaWatcherHandlers): Record<string, WatchOptionsWithHandler<any>>;
+
+/**
+ * vue options statesHook
+ */
 declare const VueOptionsHook: StatesHook<unknown, unknown>;