jimitndiaye/store-saga

An Rx implementation of redux-saga for @ngrx/store

store-saga

An Rx implementation of redux-saga for @ngrx/store and Angular 2.

Based on redux-saga-rxjs by Salsita, with inspiration from redux-saga by Yelouafi.

Usage

store-saga depends on @ngrx/store and Angular 2. After configuring @ngrx/store, install store-saga:

npm install store-saga --save

Write a saga:

import {Saga} from 'store-saga';

export const Increment: Saga = iterable => iterable
  .filter(({ state, action }) => action.type === 'DECREMENT')
  .map(() => ({ type: 'INCREMENT' }));

Bootstrap your app using the saga middleware provider and your saga:

import sagaMiddlewareProvider, { useSaga } from 'store-saga';

bootstrap(App, [
  provideStore(reducer, initialState),
  sagaMiddlewareProvider,
  useSaga(increment)
]);

Saga Factories

To run your saga in the context of the injector, you can write saga factories instead:

import {Saga} from 'store-saga';
import {Http} from 'angular2/http';

export function authenticate(http: Http): Saga<State>{
  return iterable => iterable
    .filter(({ action }) => action.type === 'GET_USER')
    .flatMap(() => http.get('/user'))
    .map(res => res.json())
    .map(user => ({ type: 'USER_RETRIEVED', user }));
}

Then create a provider for the saga with useSagaFactory:

import sagaMiddlewareProvider, {useSagaFactory} from 'store-saga';

bootstrap(App, [
  provideStore(reducer, initialState),
  sagaMiddlewareProvider,
  useSagaFactory(authenticate, [ Http ])
]);