The assets/ directory is used to add all the website's assets that the build tool will process.
The directory usually contains the following types of files:
public/
If you want to serve assets from the server, we recommend taking a look at the public/ directory.
.output
Nuxt creates the .output/ directory when building your application for production.
components
The components/ directory is where you put all your Vue components.
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Building Blocks for Modern Web Apps.