Don't use redux-saga

promise-middleware.js

const promiseMiddleware = store => next => action => {
  if (typeof action.then === 'function') {
    return Promise.resolve(action).then(next);
  } else if (action.value && typeof action.value.then === 'function') {
    return Promise.resolve(action.value).then(value => next({ type: action.type, value }));
  }
  // else, not a promise
  try {
    return next(action);
  } catch (e) {
    return Promise.reject(e);
  }
};

// dispatch(someQuery())
// dispatch(fechApi('/foos').then(foos => ({type: FOOS, value: foos})))