Angular 1.x vs Angular >= 2
Angular 1.4.7 is around 59k after minification/gzip. Including the optional router library ui-router adds another 10k, so you are probably looking at a total of roughly 70k.
Angular 1.x ships as a pre-built “one size fits all” bundle, with no way to customize the bundle based on application needs. This is where the bundling of Angular 1.x and Angular >= 2 differ the most.
Post Angular 1.x the bundling strategy has moved to a strategy where devs can opt-in to only the parts of Angular needed to run their specific application.
... read the whole story at www.syntaxsuccess.com.