upgrade to svelte 2.0

[nolanlawson]

After incrementally removing some deprecated stuff, let's see if this works...

[nolanlawson]

Hmmm, production mode is still failing for some reason, apparently due to CSS. Need to debug...

[nolanlawson]

Seems Svelte 2.0 changed how CSS is emitted? For some reason, async CSS chunks just aren't generated at all. 😕

[nolanlawson]

Oddly, sometimes the npm run build command fails entirely:

ERROR in /private/var/folders/3x/d09_d8b15tn8yvg8_18pm8200000gn/T/svelte-undefined.css
Module build failed: ModuleBuildError: Module build failed: Unclosed comment (2:1)

[nolanlawson]

Tried disabling source maps. Still succeeds in building occasionally, but when it does there are no async CSS chunks. When it fails it shows an error like this:

ERROR in /private/var/folders/3x/d09_d8b15tn8yvg8_18pm8200000gn/T/svelte-undefined.css
Module build failed: ModuleBuildError: Module build failed: SyntaxError: Unexpected token  in JSON at position 1273

[nolanlawson]

The CSS file svelte-undefined.css appears valid, but that name is probably wrong

[nolanlawson]

It looks like all CSS files are being generated with the filename svelte-undefined.css.

[nolanlawson]

Ah just found this exact issue: sveltejs/svelte-loader#56

[nolanlawson]

overall JS bundle size drops from 642kB to 615kB, very nice! http://dev.pinafore.social/report.html