[iMarv]

Depending on how well you do the treeshaking, all dependencies that are not in use will be removed from the bundle.

I do not know how agressive the angular CLI settings for webpack are, but with our own config we are removing any noise really effectively

[kevindqc]

Also, you can use a tool like https://www.npmjs.com/package/source-map-explorer to see if there's code in your bundle you don't expect!