Comment by shakna

One example from the site:

    import module from 'node:module'
    const tree = new FileTree('site', import.meta.url)
    module.registerHooks(hooks.useTree(tree))
    import('site/myfile.js')

Here, site/myfile.js doesn't exist. It gets created as a reference by the FileTree library. Node thinks it is importing it. The import is also automatically reloaded, if the backend changes it. Caches are invalidated and objects replaced.