NodeJS module patterns

module-patterns.js

// PATTERN 1: DEFINE A GLOBAL

// foo.js
foo = function () {
  console.log('foo!');
}

// app.js
require('./foo.js');
foo();


// PATTERN 2: EXPORT AN ANONYMOUS FUNCTION

// bar.js
module.exports = function () {
  console.log('bar!');
}

// app.js
var bar = require('./bar.js');
bar();


// PATTERN 3: EXPORT A NAMED FUNCTION

// fiz.js
exports.fiz = function () {
  console.log('fiz!');
}

// app.js
var fiz = require('./fiz.js').fiz;
fiz();


// PATTERN 4: EXPORT AN ANONYMOUS OBJECT

// buz.js
var Buz = function () {};

Buz.prototype.log = function () {
  console.log('buz!');
};

module.exports = new Buz();

// app.js
var buz = require('./buz.js');
buz.log();


// PATTERN 5: EXPORT A NAMED OBJECT

// baz.js
var Baz = function () {};

Baz.prototype.log = function () {
  console.log('baz!');
};

exports.Baz = new Baz();

// app.js
var baz = require('./baz.js').Baz;
baz.log();


// PATTERN 6: EXPORT AN ANONYMOUS PROTOTYPE

// doo.js
var Doo = function () {};

Doo.prototype.log = function () {
    console.log('doo!');
}

module.exports = Doo;

// app.js
var Doo = require('./doo.js');
var doo = new Doo();
doo.log();


// PATTERN 7: EXPORT A NAMED PROTOTYPE

// qux.js
var Qux = function () {};

Qux.prototype.log = function () {
  console.log('baz!');
};

exports.Qux = Qux;

// app.js
var Qux = require('./qux.js').Qux;
var qux = new Qux();
qux.log();