plugin-svelte CSS @import resolves to /web_modules, even with baseUrl set

[kennethklee]

Global style imports resolve to the wrong url when baseUrl is set.

Example

snowpack.config.js:

module.exports = {
  mount: {
    public: '/',
    src: '/_dist_',
  },
  plugins: [
    '@snowpack/plugin-svelte',
  ],
   buildOptions: {
    baseUrl: "/blog"
  }
};

App.svelte:

<style @global>
@import 'bulma/css/bulma.min.css';
</style>

<h1 class="title">Hello</h1>

Expected

Text "Hello" has the bulma title style.

Actual

When visiting http://localhost:8080/blog, we get the following browser error:

:8080/public:1 GET http://localhost:8080/web_modules/bulma/css/bulma.min.css net::ERR_ABORTED 404 (Not Found)

Meanwhile, "Hello" has the default h1 style.