Import ECMAScript module with an URL

[joas8211]

Web ecosystem is moving towards decentralized dependency hosting (from centralized, eg. NPM) that can be accomplished currently by importing ECMAScript module with an URL. It seems that it isn't possible though.

The steps to reproduce is as follows.

1. Create bare Plenti site.

$ plenti new site plenti-url-import --bare
$ cd plenti-url-import

2. Edit layouts/content/index.svelte as follows:

<script>
    import d3 from 'https://cdn.skypack.dev/d3@7';
</script>

4. Try to build and serve the site.

$ plenti serve

The error that appears in terminal is similar as in #165:

open public/spa/web_modules/https://cdn.skypack.dev/d3@7: no such file or directoryno such file or directory (File: /home/runner/work/plenti/plenti/cmd/build.go, Line: 145)

It appears that Plenti is trying to look for the module in web_modules althoug it's clearly an external resource.