chore: use type module in root (#764)

Author: bluwy

.eslintrc.js renamed to .eslintrc.cjs

@@ -91,6 +91,18 @@ module.exports = {
 				browser: true
 			}
 		},
+		{
+			// eslint is not great at detecting the esm/cjs context of a file,
+			// mistreating `require` and `module` globals as undefined
+			files: [
+				'packages/e2e-tests/_test_dependencies/cjs-only/**',
+				'packages/e2e-tests/_test_dependencies/index-only/**',
+				'packages/e2e-tests/_test_dependencies/vite-plugins/**'
+			],
+			rules: {
+				'no-undef': 'off'
+			}
+		},
 		{
 			files: ['packages/e2e-tests/**/vite.config.js', 'packages/playground/**'],
 			rules: {

.prettierrc.js

@@ -1,9 +1,10 @@
-module.exports = {
+/** @type {import("prettier").Config} */
+export default {
 	useTabs: true,
 	singleQuote: true,
 	trailingComma: 'none',
 	printWidth: 100,
-	plugins: [require('prettier-plugin-svelte')],
+	plugins: ['prettier-plugin-svelte'],
 	overrides: [
 		{
 			files: '**/*.svx',

package.json

@@ -1,6 +1,7 @@
 {
   "name": "vite-plugin-svelte-monorepo",
   "private": true,
+  "type": "module",
   "scripts": {
     "test": "run-s -c test:unit test:build test:serve",
     "test:unit": "vitest run",

packages/vite-plugin-svelte/src/utils/load-svelte-config.js

@@ -59,7 +59,8 @@ export async function loadSvelteConfig(viteConfig, inlineOptions) {
 				// identify which require function to use (esm and cjs mode)
 				const _require = import.meta.url
 					? esmRequire ?? (esmRequire = createRequire(import.meta.url))
-					: require;
+					: // eslint-disable-next-line no-undef
+					  require;
 
 				// avoid loading cached version on reload
 				delete _require.cache[_require.resolve(configFile)];