MDsveX + svelte@next (i.e. Snowpack)

Has anyone already tried out/figured out how to use MDsveX with svelte@next using Snowpack as bundler as demoed in https://youtu.be/qSfdtmcZ4d0? I.e. start a project with npm init svelte@next my-app && cd my-app && npm i && npm i -D mdsvex. Do I just import mdsvex in svelte.config.js and it should work?

const { mdsvex } = require(`mdsvex`)

module.exports = {
  adapter: `@sveltejs/adapter-static`,
  preprocess: mdsvex(),
  extensions: [`.svelte`, `.svx`],
}

[rmunn]

Update: This appears to have nothing to do with mdsvex!

I commented out the msdvex pre-processor in my svelte.config.js and the problem persisted. A bit more poking around led me to the create_manifest_data function in @svelte/kit’s create_app.js file. Its first few lines are:

function create_manifest_data(config, extensions = '.svelte') {
	// TODO support .svelte.md etc?
	const cwd = config.files.routes;
	const component_extensions = extensions.split(' ');

And it’s called in two places in @svelte/kit, one in index.js and one in index2.js. The first call looks like this:

	update() {
		const manifest_data = create_app.create_manifest_data(this.config);

		create_app.create_app({
			manifest_data,
			output: '.svelte/assets'
		});

And the second one looks like this:

async function build(config) {
	const manifest = create_app.create_manifest_data(config);

	utils.mkdirp(ASSETS);
	await rimraf(UNOPTIMIZED);
	await rimraf(OPTIMIZED);

	create_app.create_app({
		manifest_data: manifest,
		output: '.svelte/assets'
	});

In both cases, no second parameter is given to create_app.create_manifest_data, so there’s no way to override the .svelte extension. Currently, that is: the TODO comment strongly hints that that ability will be added sometime in the future. But for now, the reason you’re getting the “GET is not implemented for /test” errors or the 404s appears to be because svelte-kit doesn’t yet handle extensions other than .svelte when it’s writing manifests, and with an incorrect manifest you get incorrect behavior.

[mcmxcdev]

@DrMagPie yeah that most likely works for an import of e.g. Foo.svx, but how to do make it work with a [slug].svelte where you inject a .svx blog post file named like the slug as a <slot/> ? That’s how I had it with Sapper currently.