javascript - 使用 import as 将参数传递给combineReducers

Question

当我将以下 reducer 作为参数传递时，我试图理解为什么 combineReducers 不适用于版本 1 和 2:

import {reducers as summaryReducers} from 'package-A';
import {reducers} from 'package-B';

// Version 1
const store = createStore(combineReducers(summaryReducers, reducers));

// Version 2
const store = createStore(combineReducers({summaryReducers, reducers});   

reducers 定义为:

const reducers = Object.assign({}, { formState: formReducers });
export { reducers };

summaryReducers 定义为:

const reducers = {popUpManager: popUpManagerReducers};
export { reducers };

问题是import将这些reducer作为对象获取，而我们只能将单个对象传递给combineReducers吗？

Answer 1

是的，combineReducers将一个充满reducer函数的对象作为其唯一的参数。

此外，您可能应该更改导出这些 reducer 函数的方式。如果将它们导出到对象内部，那么当您实际调用combineReducers时，引用它们将会变得更加复杂。只需从 package-a 和 package-b 中导出 reducer 函数即可。