import * as React from 'react';
/**
 *
 * @param reducers 由 reducer 組成的物件
 * @returns React.useReducer 的第一個參數
 * @example
 * // 創建 reducer (reducer1, reducer2... )
 * const reducer = (state: any, action: any) => {
 *    switch (action.type) {
 *        case "INCREMENT":
 *            return {
 *                ...state,
 *                a: state.a + action.step
 *            };
 *        case "DECREMENT":
 *            return {
 *                ...state,
 *            };
 *        default:
 *            return state;
 *    }
 *}
 *
 * const combineReactReducer = combineReactReducers({
 *     reducer,
 *     reducer1,
 *     ...
 * });
 */
export declare const combineReactReducers: (reducers: any) => (state: any, action: any) => any;
export interface ReactProviderProps {
    /**
     * 需要使用本Context的所有子組件
     */
    children?: React.ReactNode;
    /**
     * 透過 createWowgoStore(reducer) 創建的Store，
     * 註 : reducer: (initialState: any, action: any) => (any)
    */
    store: {};
}
/**
 *
 * @param props
 * @returns WowgoReactProvider
 *
 * @example
 *
 * const combineReactReducer = combineReactReducers({
 *     reducer,
 *     reducer1,
 *     ...
 * });
 *
 * // 對應 combineReactReducer 的狀態初始值
 * const initialState={ reducer: {}, reducer1: {}, ...}
 *
 * const App = () => {
 *     const [stroe, dispatch] = React.useReducer(combineReactReducer, initialState);
 *
 *     // 還可以把 useState 放進 WowgoReactProvider 使用，稍後使用 useWowgoReactSelector 取得值
 *     // const [SomeState, setSomeState] = React.useState(null)
 *
 *     return (
 *       <WowgoReactProvider store={{ stroe, dispatch, SomeState, setSomeState }}>
 *         <Components ... />
 *       </WowgoReactProvider>
 *     );
 * }
 *
 * export default App;
 *
 */
export declare const WowgoReactProvider: React.FC<ReactProviderProps>;
/**
 *
 * @param selector 篩選函數
 * @returns 篩選過後的狀態值
 *
 * @example
 *
 * export interface S {
 *     todo: number
 * }
 *
 * const AboutPage = (props: any) => {
 *
 *  const todo = useWowgoReactSelector<S, number>(state => state.reducer1.todo)
 *
 *  return (
 *      <p>
 *          {todo}
 *      </p>
 *  )
 *
 * export default AboutPage
 */
export declare const useWowgoReactSelector: <Type, TSelected = unknown>(selector: (state: Type) => TSelected) => TSelected;