+ assets/
+ ├── common/ # Assets shared by multiple themes
+ ├── ...
+ ├── default/ # Assets for the default template, before compilation
+ ├── fonts/ # Font files
+ ├── img/ # Images used by the default theme
+ ├── js/ # JavaScript files in ES6 syntax
+ ├── scss/ # SASS files
+ └── vintage/ # Assets for the vintage template, before compilation
+ └── ...