createEpicMiddleware([options])

createEpicMiddleware() is used to create an instance of the actual redux-observable middleware.

Arguments

1. [options: Object]: The optional configuration. Options:
   • dependencies: If given, it will be injected as the 3rd argument to all epics.

Returns

(MiddlewareAPI): An instance of the redux-observable middleware.

Example

redux/configureStore.js

import { configureStore } from '@reduxjs/toolkit';
import { createEpicMiddleware } from 'redux-observable';
import { rootEpic } from './modules/rootEpic';

const epicMiddleware = createEpicMiddleware();

export const store = configureStore({
  reducer: {
    // ...reducers...
  },
  middleware: (getDefaultMiddleware) =>
    getDefaultMiddleware().concat(epicMiddleware),
});

  epicMiddleware.run(rootEpic);
}