Export a library for commonjs, nodejs, and browser.

example.js

function myLib() {
  return {
    code: function () {}
  , goes: function () {}
  , here: function () {}
  }
}

exporter('myLib', myLib);

exporter.js

function exporter(name, definition) {
  var old, lib;

  // AMD
  if (typeof define === 'function') {
    define(definition);

  // CommonJS
  } else if (typeof exports === 'object') {
    module.exports = definition();

  // Browser
  } else {
    window[name] = definition();
  }
}