redux saga does not support async call for now

Tried using redux saga with async function call and failed badly. Atleast this is valid for 0.16.0.
Spent so much time understand what is wrong with my code.

As you can see below, await has been commented out and no longer works.

import { call, put, takeEvery, takeLatest, ForkEffect, all, fork, take } from 'redux-saga/effects'

import userApi from './apiRequest';

export function* fetchUser(action) {

try {

console.log('FETCH_USER user data -e', );

//let api = new userApi();

//const users = await api.getUsers("a");

debugger;

const users = yield call(getUsers);

yield put({type: 'USER_FETCH_SUCCEEDED', users: users });

}

catch (e) {

yield put({type: 'USER_FETCH_ERROR', message: e.message});

}

}

function getUsers() {

return fetch("http://localhost:3000/users/all");

}

export function* updateUser(action) {

try {

console.log('UPDATE user data -e');

let api = new userApi();

const user = api.getUsers("a");

yield put({type: 'USER_UPDATE_SUCCEEDED', user: user});

return user;

} catch (e) {

yield put({type: 'USER_UPDATE_ERROR', message: e.message});

}

}

export function* fetchUserSaga(): IterableIterator<ForkEffect> {

yield takeLatest("FETCH_USER", fetchUser);

}

export function* updateUserRoleSaga(): IterableIterator<ForkEffect> {

yield takeLatest("UPDATE_USER", updateUser);

}

export default function* root() {

yield all([

fork(fetchUserSaga),

fork(updateUserRoleSaga)

])

}