everyDamnTime.js

// Before
this._stageCollection.add(new LevelButton({
	parent: this._container,
	stage: stageId,
	stageId: stages[levelNumber],
	levelNumber: levelNumber,
	x: (offsetX + levelNumber - 1) * buttonStyle.width,
	y: offsetY * buttonStyle.height
}));

// After
var levelButton = new LevelButton({
	parent: this._container,
	stage: stageId,
	stageId: stages[levelNumber],
	levelNumber: levelNumber,
	x: (offsetX + levelNumber - 1) * buttonStyle.width,
	y: offsetY * buttonStyle.height
});
this._stageCollection.add(levelButton);