svelte.config.js

import { vitePreprocess } from "@sveltejs/vite-plugin-svelte";
import adapter from "@sveltejs/adapter-netlify";

export default {
  kit: {
    // default options are shown
    adapter: adapter({
      // if true, will create a Netlify Edge Function rather
      // than using standard Node-based functions
      edge: false,

      // if true, will split your app into multiple functions
      // instead of creating a single one for the entire app.
      // if `edge` is true, this option cannot be used
      split: false,
    }),
  },
};

/** @type {import('@sveltejs/kit').Config} */
const config = {
  kit: {
    prerender: {
      handleHttpError: ({ path, referrer, message }) => {
        // ignore deliberate link to shiny 404 page
        if (
          path === "/not-found" &&
          referrer === "/blog/how-we-built-our-404-page"
        ) {
          return;
        }

        // otherwise fail the build
        throw new Error(message);
      },
    },
    // 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(),
  },

  preprocess: [vitePreprocess({})],
};