It takes as much energy to wish as it does to plan. — Eleanor Roosevelt
It's all too easy to go crazy with the imports and end up with megabytes upon megabytes of JavaScript. It can be a problem as that weight burdens each and every visitor from our site, very possibly delaying or stopping them from doing what they came to do on the site. Bad for them, worse for you.
There is all sorts of ways to keep an eye on it.… Read article “How to Worry About npm Package Weight”
Gonzalo García takes a crack at why webpack (not capitalized like npm) exists at all. No particular disagreements here, but here's my crack at it...
import stuff from place;. This is a good pattern. We can use webpack to interpret those statements, as native support for them isn't what it needs to be yet, and it's not clear whether the native version will be smart for performance or not (probably not, 
HTTP/2 has been one of my areas of interest. In fact, I've written a few articles about it just in the last year. In one of those articles I made this unchecked assertion:
If the user is on HTTP/2: You'll serve more and smaller assets. You’ll avoid stuff like image sprites, inlined CSS, and scripts, and concatenated style sheets and scripts.
I wasn't the only one to say this, though, in all fairness to Rachel, she qualifies her assertion … Read article “Musings on HTTP/2 and Bundling”