how to access redis in blocking way instead of non-blocking (event callback) in nodejs

I want to implement Martin Flower's Sequence Generator component in his book Patterns of Enterprise Application Architecture in nodejs with redis as backend.

For example.

var redisClient = ...;
var count = redisClient.get('count');
var stepSize = 1000;
var initCount = 0;
count = count ? count : initCount;
var counterMax = count + stepSize;
redisClient.set('count', counterMax);
var counter = function(){
    ++count;
    if(count>=counterMax){
        counterMax = count + stepSize;
        redisClient.set('count', counterMax);
    }
    return count;
}
module.exports = {
    nextValue: counter
}

In my client, I will use:

var seq = require(./sequence);

app.get('/', function(req, res){
    var token = seq();
    if( req.cookies.userToken ){
        res,cookie( 'userToken', token );
    }

    ....

});

I need to access redis in nodejs in blocking way instead of asynchronous way, Is there a way to go? and How?