How to structure major sections of a redux-saga implementation

Question

Can you tell me How to structure major sections of a redux-saga implementation?

Answer 1

To update Redux state in response to async actions using immer:

Install Immer:

npm install immer

Import produce from Immer:

import produce from 'immer';

Use in Reducer:

const initialState = {

  data: [],

  loading: false,

  error: null,

};

const reducer = (state = initialState, action) =>

  produce(state, draft => {

    switch (action.type) {

      case 'FETCH_REQUEST':

        draft.loading = true;

        draft.error = null;

        break;

      case 'FETCH_SUCCESS':

        draft.loading = false;

        draft.data = action.payload;

        break;

      case 'FETCH_FAILURE':

        draft.loading = false;

        draft.error = action.payload;

        break;

    }

  });