gistfile1.js

function makeDigestFun(key, callback) {
    return function (err, res) {
        clearRequestQueue(key);
        if (err && err.timeout === TIMEOUT) {
            callback(ASYNC.TIMEOUT);
        } else if (res.status === 400) {
            Api.logout();
        } else if (!res.ok) {
            callback(ASYNC.ERROR);
        } else {
            callback(res);
        }
    };
}

function get(url) {
    return request
        .get(url)
        .timeout(TIMEOUT)
        .query({authtoken: _token});
}

Api = {
    getUserLists: function(callback) {
        var key = 'user-lists';
        startRequest(key, callback);
        _pendingRequests[key] = get(makeUrl("/user-lists")).end(makeDigestFun(key, callback));
    },
    
    
    

gistfile2.js

function activateEntity (id) {
    if (id) {
        Api.getEntityData(id, function(res) {
            if (ASYNC.isAny(res)) {
                updateEntityData(res);
            } else {
                updateEntityData(res.body.entity);
            }
        });
    } else {
        updateEntityData(null);
    }
}