svelte.config.js

import adapter from "@sveltejs/adapter-auto";
import { vitePreprocess } from "@sveltejs/kit/vite";
import { mdsvex } from "mdsvex";

function readingTime() {
  const getWordCount = (content) => content.match(/\w+/g).length;
  return (_, file) => {
    file.data.fm.readingTime = Math.ceil(getWordCount(file.contents) / 250);
  };
}

/** @type {import('@sveltejs/kit').Config} */
const config = {
  // Consult https://kit.svelte.dev/docs/integrations#preprocessors
  // for more information about preprocessors
  extensions: [".svelte", ".md"],
  preprocess: [
    vitePreprocess(),
    mdsvex({
      extensions: [".md"],
      remarkPlugins: [readingTime],
    }),
  ],

  kit: {
    // adapter-auto only supports some environments, see https://kit.svelte.dev/docs/adapter-auto for a list.
    // If your environment is not supported or you settled on a specific environment, switch out the adapter.
    // See https://kit.svelte.dev/docs/adapters for more information about adapters.
    adapter: adapter(),
  },
};

export default config;