feature.toggles.js

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//File toggle.js

// All the logic for getting toggle information

exports = function FeatureToggle(toggleName, offFunc, onFunc) {

  return function() {
    if (toggleOn(toggleName))
    {
      onFunc.apply(this, arguments);  // 
    } else
    {
      offFunc.apply(this, arguments);
    }
  }
}
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// file  profile-store.js

var toggle = require('FeatureToggle');


var profileStoreOn =  {
  method1 : function() { /* does some stuff */ }
  method2 : function() {}
};

var profileStoreOff = function() {
  method1 : function() { /* does some nothing,  it is a null object */ }
  method2 : function() {}
}

exports = toggle('feature', profileStoreOn, profileStoreOff);

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// file  some-other-store.js

var toggle = require('FeatureToggle');

var on = function() { /* does some stuff */ };
var off = function() { /* does some other stuff */ };

exports = {
  method1 : toggle('tooglename', on, off)
};



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// file  some-file-using-those-others

var profileStore = require('profile-store');
var otherStore = require('some-other-store');

//What is important to understand here is that guess what....   
//the consuming code doesn't give a ... about whether there is a toggle or not.
profileStore.method1();
otherStore.method1();

// we can do it
// we can write code without if statements.
// we can fix it!