F_A_8_Test_app/src/sagas/user/changeEmail.js

import { put, call } from 'redux-saga/effects';
import axios from 'axios';

import { USER_URL } from './../../constants/user';
import { changeEmailSuccess, changeEmailFailure } from './../../actions/user/changeEmail'

export default function* ({payload:{_id,email,token}}) {
    console.log('User inside the worker-saga', _id,email,token);
    try {
        const config = {
            headers: {
                "Content-Type": "application/json",
                "Authorization": `Bearer ${token}`
            }
        }

        const user = yield call(() =>
            axios.put(`${USER_URL}${_id}`,{email:email}, config)
                .then(({ data }) => data)
        )

        yield put(changeEmailSuccess(user));
    }
    catch ({ message }) {
        yield put(changeEmailFailure(message));
    }
}