如何使用 redux saga 运行 redux devtools？

Question

尝试运行 reduxdevtools 与 redux saga:

出现此错误：

Error
Before running a Saga, you must mount the Saga middleware on the Store using applyMiddleware

这是我的jscode：

const store = createStore(
  reducer,
  applyMiddleware(sagaMiddleware),
  window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
);

我如何运行这个 devtool with saga？或者，否则会有什么用？ codepen

Answer 1

我用过redux-devtools-extension package as described here, redux-devtools-extension documentation.

添加包后，我将商店定义替换为：

const store = createStore(
  reducer,
  composeWithDevTools(
    applyMiddleware(sagaMiddleware)
  )
);

Fixed Codepen Link

Answer 2

之前的回答（来自 trkaplan）使用了来自 'redux-devtools-extension' 包的导入方法 composeWithDevTools。如果你不想安装这个包，你可以使用这个代码（基于the docs）：

      const composeEnhancers =  typeof window === 'object' && window['__REDUX_DEVTOOLS_EXTENSION_COMPOSE__'] ? 
      window['__REDUX_DEVTOOLS_EXTENSION_COMPOSE__']({ }) : compose;
      const enhancer = composeEnhancers(
        applyMiddleware(thunkMiddleware, sagaMiddleware, /*other middleware*/),
        /* other store enhancers if any */
      );
      const emptyReducer = () => {};
      const store = createStore(emptyReducer, enhancer);

Answer 3

Incase Compose of Redux 被使用。然后下面的代码很有用。第 1 步：添加 chrome Redux DevTools 扩展。第 2 步：npm 安装 redux-devtools-extension。

    import { composeWithDevTools } from 'redux-devtools-extension';
    const store = createStore(
                  reducer,
                  compose(
                  applyMiddleware(sagaMiddleware),
                  composeWithDevTools(),
                  ),
                  );

Answer 4

这就是您为实际项目配置 redux、redux-devtool-extension 和 redux-saga 的方式..

import { createStore, applyMiddleware } from 'redux';
import { composeWithDevTools } from 'redux-devtools-extension';
import createSagaMiddleware from 'redux-saga';

import rootReducer from '../reducers';
import rootSaga from '../sagas';

const configureStore = () => {
    const sagaMiddleware = createSagaMiddleware();
    return {
        ...createStore(rootReducer, composeWithDevTools(applyMiddleware(sagaMiddleware))),
        runSaga: sagaMiddleware.run(rootSaga),
    };
};

export default configureStore;

如何使用 redux saga 运行 redux devtools？

How to run redux devtools with redux saga?

redux

redux-saga

react-redux