refactoring functions that compose anonymous higher order functions

1 Original Higher order anoymous function.js

App.changeReleaseAttribute = function(attributeName, newValue){
  AppStore.transact(function(app){
    return app.mergeIn(['release', attributeName], newValue);
  });
};

2 pulling out mutators.js

App.changeReleaseAttribute = function(attributeName, newValue) {
  AppStore.transact([attributeName, newValue], ReleaseMutators.changeAttribute);
};

ReleaseMutators.changeAttribute = function(app, attributeName, newValue) {
  return app.mergeIn(['release', attributeName], newValue);
}

3 so much that it looks a lot like redux and om.js

App.changeReleaseAttribute = function(payload) {
  AppStore.transact(payload, ReleaseMutators.changeAttribute);
};

ReleaseMutators.changeAttribute = function(app, payload) {
  return app.mergeIn(['release', payload.attributeName], payload.newValue);
}