Web`Expected the root reducer to be a function. Instead, received: ' ${kindOf (reducer)} '`)} if ... * If you use `combineReducers` to produce the root reducer function, this must be * an object with the same shape as `combineReducers` keys. * * @param {Function} [enhancer] The store enhancer. You may optionally specify it WebMar 27, 2024 · I created a simple Vanilla JS App and installed redux in it but when I run the app in the terminal I am getting "Error: Expected the root reducer to be a function. Instead, received: 'undefined'" ... => { switch (action.type) { case BUY_CAKE: return { //always return new state objet since a reducer is a pure function ...state, //state object ...
reactjs - Uncaught ReferenceError: rootReducer is not defined …
WebJul 2, 2024 · How to use single action type in different reducer function with createSlice method in redux-toolkit 1 Redux Error: A case reducer on a non-draftable value must not return undefined WebMay 8, 2024 · Error: Expected the reducer to be a function. at lines. from index: const { store } = configureStore(); ... It looks like you're exporting an object instead of a function in your root reducer. rootReducer. import mockReducer from './mockReducer'; // export default { mockReducer }; export default mockReducer; pamela gianoni
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WebDec 23, 2016 · If you produced reducer with combineReducers, this must be a plain object with the same shape as the keys passed to it. Otherwise, you are free to pass anything that your reducer can understand. [enhancer] (Function): The store enhancer. You may optionally specify it to enhance the store with third-party capabilities such as middleware, … WebExpected the listener to be a function. Instead, received: ''. 5. You may not call store.subscribe () while the reducer is executing. If you would like to be notified after the store has been updated, subscribe from a component and invoke store.getState () in the callback to access the latest state. Web90. Your issue lies with how you're importing your coins reducer: import { coins } from './coins'. The latter tries to obtain a named export returned from the file in ./coins. You are not using any named exports only export default, therefore you just need to import the file as follows: import coins from './coins'; エクセル 棒グラフ 上 数字