Expose Svelte CSS Output

[curran]

The last remaining task for Svelte integration is to expose the CSS outout on the page.

Possible Approaches:

• We generate a css file automatically alongside bundle.js and require that users include that into their index.html.
• We inject a <style> tag directly into index.html when the program is run.

Considerations:

• The exported thing should work as statically hosted files (so, in favor of the generated CSS file and explicit inclusion of it).
• Should go with Svelte conventions. What is the convention for the output file name? How does the Svelte example app handle this?

[curran]

Oh hey! sveltejs/template uses the name bundle.css. How appropriate.

And in that template, index.html explicitly pulls in that generated file like so:

<link rel='stylesheet' href='/build/bundle.css'>  

[curran]

bundle.css seems the way to go.

So this means we'll need to introduce almost exactly the same logic as is there for bundle.js, applied to generating bundle.css. This includes all the hairy logic around ignoring remote changes (only re-generating the file when local changes are made).

This may be a substantial effort.

[curran]

Added Launch Blocker tag as this is the last thing we need before announcing Svelte support.