Tags

You can use Svelte components for tags, the same way you do for nodes.

Create a Svelte file and export Svelte components with the same name as the node from the module context.

<!-- ./src/lib/Tags.svelte -->
<script context="module">
    export { default as Multiply } from './Multiply.svelte';
</script>
// svelte.config.js
import { dirname, join } from 'path';
import { fileURLToPath } from 'url';

markdoc({
    tags: join(dirname(fileURLToPath(import.meta.url)), './src/lib/Tags.svelte'),
})
<!-- ./src/lib/Multiply.svelte -->
<script>
    export let a;
    export let b;
</script>

<p>{a} * {b} = {a * b}</p>
<!-- ./src/routes/+page.markdoc -->
# I am in a markdoc file

{% multiply a=2 b=3 /%}