obs.js

// Runs resetError() AFTER storeToken(token)
export function renewToken({ clientId, redirectUri }) {
    return (dispatch, getState) => {
        getOAuthToken({ clientId, redirectUri })
            .then(token =>
                dispatch(storeToken(token))
            )
            .then(() => {
                dispatch(resetError());
            });
    };
}

// How to achieve this using redux-observable,
// considering that storeToken(token) is a thunk and resetError() a plain object?

function handleRenew(action$) {
    return action$.ofType(RENEW_TOKEN)
        .mergeMap(action => getOAuthToken(action.payload))
        .map(token => storeToken(token)) 
        // here I need to "resolve" the storeToken(token) thunk
        // and emit resetError(), but I don't understand how
}