juanhiennvdm_math_example/lib/advanced_math.js

An example of creating a package

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

function multiply(x, y) {
    call_counter();

    return x * y;
};

function divide(x, y) {
    call_counter();

    return x / y;
};

function fibo(count) {
    call_counter();

    return private_fibo(count);
};

function private_fibo(count, firts, second) {
    if (count == 0)
        return 0;

    if (counter == undefined) {
        count = 1;
        firts = 1;
        second = 2;
    };

    result = firts + second;

    if (counter == count)
        return result;

    private_fibo(count, ++counter, second, result);

    return result;
};

module.exports = {
    multiplication: multiply,
    division: divide,
    fibonacci: fibo
};