[breaking] require vite.config.js

Author: benmccann

.changeset/hip-trainers-sort.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+[breaking] require vite.config.js

packages/kit/src/cli.js

@@ -283,10 +283,9 @@ function welcome({ port, host, https, open, base, loose, allow, cwd }) {
 }
 
 /**
- * @param {import('types').ValidatedConfig} svelte_config
  * @return {Promise<import('vite').UserConfig>}
  */
-export async function get_vite_config(svelte_config) {
+export async function get_vite_config() {
 	for (const file of ['vite.config.js', 'vite.config.mjs', 'vite.config.cjs']) {
 		if (fs.existsSync(file)) {
 			// TODO warn here if config.kit.vite was specified
@@ -298,10 +297,5 @@ export async function get_vite_config(svelte_config) {
 		}
 	}
 
-	const { sveltekit } = await import('./vite/index.js');
-
-	// TODO: stop reading Vite config from SvelteKit config or move to CLI
-	const vite_config = await svelte_config.kit.vite();
-	vite_config.plugins = [...(vite_config.plugins || []), ...sveltekit()];
-	return vite_config;
+	throw new Error('vite.config.js is missing. See an example here: https://github.com/sveltejs/kit/blob/master/packages/create-svelte/templates/skeleton/vite.config.js');
 }

packages/kit/src/core/config/options.js

@@ -278,7 +278,7 @@ const options = object(
 			// TODO remove this for 1.0
 			ssr: error(
 				(keypath) =>
-					`${keypath} has been removed — use the handle hook instead: https://kit.svelte.dev/docs/hooks#handle'`
+					`${keypath} has been removed — use the handle hook instead: https://kit.svelte.dev/docs/hooks#handle`
 			),
 
 			// TODO remove this for 1.0
@@ -291,22 +291,10 @@ const options = object(
 				pollInterval: number(0)
 			}),
 
-			vite: validate(
-				() => ({}),
-				(input, keypath) => {
-					if (typeof input === 'object') {
-						const config = input;
-						input = () => config;
-					}
-
-					if (typeof input !== 'function') {
-						throw new Error(
-							`${keypath} must be a Vite config object (https://vitejs.dev/config) or a function that returns one`
-						);
-					}
-
-					return input;
-				}
+			// TODO remove this for 1.0
+			vite: error(
+				(keypath) =>
+					`${keypath} has been removed — use vite.config.js instead`
 			)
 		})
 	},