However, my concern is this: many apps don’t need everything these large frameworks put in the box. In a world that’s increasingly embracing microservices, microapps, and single-reponsability packages, React gives you the power to “right-size” your application by carefully selecting only what is necessary.
Angular 2 versus React: There Will Be Blood
Cory House

The Angular CLI will *probably* offer a tree-shaking option at build that will reduce significantly the size of the output files.

If not the Angular CLI then you can do it will rollup or webpack 2.