Ideally, to save bandwidth on both sides, the server would only want to serve you the JS and CSS you need. I’m not sure how frequently that optimization is made, however.
I’m a bit rusty on this, but I think you’d need to split your Sass/SCSS/etc before Webpack will perform tree-shaking or allow lazy-loading. I don’t think many devs wrote it that way: personally, I like my mobile rules beside my desktop ones, since my styling is component-wise.
Ideally, to save bandwidth on both sides, the server would only want to serve you the JS and CSS you need. I’m not sure how frequently that optimization is made, however.
I’m a bit rusty on this, but I think you’d need to split your Sass/SCSS/etc before Webpack will perform tree-shaking or allow lazy-loading. I don’t think many devs wrote it that way: personally, I like my mobile rules beside my desktop ones, since my styling is component-wise.
I haven’t done UI work in years so I’m not sure how they do it these days.