fix remaining tests

packages/mdsvex/src/index.ts

@@ -16,6 +16,7 @@ export * from './types';
 
 import { join } from 'path';
 import fs from 'fs';
+import { fileURLToPath } from 'url';
 import { parse } from 'svelte/compiler';
 import unified from 'unified';
 import markdown from 'remark-parse';
@@ -128,11 +129,11 @@ function to_posix(_path: string): string {
 
 function resolve_layout(layout_path: string): string {
 	try {
-		return to_posix(require.resolve(layout_path));
+		return to_posix(fileURLToPath(import.meta.resolve(layout_path)));
 	} catch (e) {
 		try {
 			const _path = join(process.cwd(), layout_path);
-			return to_posix(require.resolve(_path));
+			return to_posix(fileURLToPath(import.meta.resolve(_path)));
 		} catch (e) {
 			throw new Error(
 				`The layout path you provided couldn't be found at either ${layout_path} or ${join(

packages/mdsvex/test/it/code_highlighting.test.ts

@@ -220,7 +220,7 @@ highlight(
 			code: string,
 			lang: string | undefined
 		): Promise<string> {
-			// const shiki = require('shiki');
+			// const shiki = await import('shiki');
 			const highlighter = await shiki.getHighlighter({
 				theme: 'material-theme-palenight',
 			});
@@ -347,8 +347,8 @@ highlight(
 highlight(
 	'Should be possible to add additional highlighting grammars',
 	async () => {
-		require('prismjs');
-		require('prism-svelte');
+		await import('prismjs');
+		await import('prism-svelte');
 		const output = await mdsvex({
 			highlight: { alias: { beeboo: 'html' } },
 		}).markup({