JavaScript How to join a collection of Promises asyncrounously in a Saga?

To run all request in parallel you should use the all effect from redux-saga. Its analogous to the Promise.all method you referenced already.

Example:

import { fetchCustomers, fetchProducts } from './path/to/api'
import { all, call } from `redux-saga/effects`

function* mySaga() {
  const { customers, products } = yield all({
    customers: call(fetchCustomers),
    products: call(fetchProducts)
  });
  // do something with results
}

This is the most straight forward way to run asynchronous operations in parallel and wait for all processes to complete. This approach will not block the javascript event loop. It will only block the remainder of the generator function from running. Other actions in other sagas, and other events (such as clicks), will still be received by your application while the requests are in flight.

Please refer to the official docs for more information.

Answer:1

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