TypeError: this.set is not a function

I was just about to test synaptic in a node.js app for the first time so I copied down some of the basic code from the intro guide. Stock code: function Perceptron(input, hidden, output) { // create the layers var inputLayer = new Layer(input); var hiddenLayer = new Layer(hidden); var outputLayer = new Layer(output);

// connect the layers
inputLayer.project(hiddenLayer);
hiddenLayer.project(outputLayer);

// set the layers
this.set({
	input: inputLayer,
	hidden: [hiddenLayer],
	output: outputLayer
});

} The app runs successfully, but when the app attempts to make a new perceptron it returns "this.set is not a function"