The integration will bundle all CSS and JS files into a single file after Astro's static build.
The output after the integration runs will look like this:
dist
_astro
script.js
style.css
...
astro.config.ts
import { defineConfig } from 'astro/config'
import { astroMergeAssets } from 'astro-merge-assets'
export default defineConfig({
output: 'static',
integrations: [astroMergeAssets()],
})