math_example_cvazquezm/lib/simple_math.js

An example of creating a package

var call_counter = require('./call_counter');

function add(x,y){
	call_counter();
	return x + y;
}

function subtract(x,y){
	call_counter();
	return x-y;
}

module.exports = {
	addition : add,
	subtraction : subtract
}