在useInjectReducer函数中初始化rootReducer应该用什么key

如何解决在useInjectReducer函数中初始化rootReducer应该用什么key

应该使用哪个 Key 来初始化 root Reducer ？ 如果是单个减速器，则必须以“Slicename”为键。但是不确定，rootReducer初始化时应该取什么值。

var rootReducer = combineReducers({
    firstReducerSlice: firstReducerSlice,secondReducerSlice: secondReducerSlice,thirdReducerSlice: thirdReducerSlice
});

Route.js：

            import { useInjectReducer } from 'utils/injectReducer';
            import { useInjectSaga } from 'utils/injectSaga';
            import rootReducerfrom '../global/rootreducer';
            import rootsaga from '../global/rootsagas';
            
           useInjectReducer('key (?)',rootReducer);  //what should be the key used here to initialize rootReducer ?
     ...

    useInjectSaga({ 'any key',rootsaga });