svgl/svelte.config.js

import adapter from '@sveltejs/adapter-auto';
import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';

// Extensions:
import { mdsvex, escapeSvelte } from 'mdsvex';
import shiki from 'shiki';

// Markdown config:
/** @type {import('mdsvex').MdsvexOptions} */
const mdsvexOptions = {
  extensions: ['.md'],
  highlight: {
    highlighter: async (code, lang = 'text') => {
      const highlighter = await shiki.getHighlighter({ theme: 'vitesse-dark' });
      const html = escapeSvelte(highlighter.codeToHtml(code, { lang }));
      return `{@html \`${html}\` }`;
    }
  }
};

// Svelte config:
/** @type {import('@sveltejs/kit').Config} */
const config = {
  extensions: ['.svelte', '.md'],
  preprocess: [vitePreprocess(), mdsvex(mdsvexOptions)],
  kit: {
    adapter: adapter(),
    alias: {
      '@': './src/*'
    }
  }
};

export default config;