svelte.config.js

import adapter from "@sveltejs/adapter-auto";
import { vitePreprocess } from "@sveltejs/vite-plugin-svelte";
import { relative, sep } from "node:path";

/** @type {import('@sveltejs/kit').Config} */
const config = {
	compilerOptions: {
		// defaults to rune mode for the project, execept for `node_modules`. Can be removed in svelte 6.
		runes: ({ filename }) => {
			const relativePath = relative(import.meta.dirname, filename);
			const pathSegments = relativePath.toLowerCase().split(sep);
			const isExternalLibrary = pathSegments.includes("node_modules");

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

export default config;