Saga for making calls to gitHubApi

Sagas.js

// Here, we use ES6 destructuring assignment to extract payload
// from the action object passed to it.
function* loadUserDetails({ payload }) {
  try {
    const user = yield call(gitHubApi, payload);
    // Yields effect to the reducer specifying action type 
    // and user details.
    yield put({type: 'LOAD_USER_SUCCESS', user}); 
  } catch (error) {
    yield put({ type: 'LOAD_USER_FAILURE', error });
  }
}
// Call loadUserDetails with action's payload each time 
// LOAD_USER_REQUEST is dispatched
function* watchRequest() {
  yield takeLatest('LOAD_USER_REQUEST', loadUserDetails);
}