@actionstack/epics NPM

ActionStack Epics

Overview

Actionstack Epics is a middleware package that enables handling asynchronous operations and side effects in a reactive manner using RxJS. With support for streams, it is ideal for applications requiring complex event-driven logic.

Installation

Install Actionstack Epics using:

npm install @actionstack/epics

Features

Reactive side effect management using RxJS
Concurrent and sequential processing of streams
Supports dynamic addition and removal of epics
Integrates seamlessly with the Actionstack store

Usage

Configure the epics middleware in your store:

    import { createStore } from '@actionstack/store';
    import { epics, run } from '@actionstack/epics';
    import rootEpic from './epics';

    export const store = createStore({
      reducer: (state: any = {}) => state,
      dependencies: {},
    }, applyMiddleware(logger, epics));

    // Register the root epic
    store.dispatch(run(rootEpic));

Writing an Epic:

    import { ofType } from '@actionstack/epics';
    import { map } from 'rxjs/operators';
    import { fetchSuccess } from './actions';

    const fetchEpic = (action$, state$, dependencies) =>
      action$.pipe(
        ofType('FETCH_REQUEST'),
        map(() => fetchSuccess())
      );

    export default fetchEpic;