Deferred for Node.js

deferred.js

// Deferreds are useful for chaining: doSomething().success(doSomethingElse).failure(stopStuff);
function Deferred() {
    this._successCbk = function() {},
    this._failureCbk = function() {};
    
    return this;
}

Deferred.prototype.success = function(cbk) {
    this._successCbk = cbk;
    
    return this;
};

Deferred.prototype.failure = function(cbk) {
    this._failureCbk = cbk;
    
    return this;
};

Deferred.prototype.triggerSuccess = function() { 
    return this._successCbk.apply(null, arguments);
};

Deferred.prototype.triggerFailure = function() {
    return this._failureCbk.apply(null, arguments);
};

exports.Deferred = Deferred;