Remove usage of createRequire in core image (#6488)

* Add fallback for hosts without import.meta.url

* Try using an import

* Add image-size as external

* Make image-size external

* Apply suggestions from code review

* leave image-size alone

.changeset/lucky-shoes-mate.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Remove use of createRequire breaking non-Node hosts.

packages/astro/src/assets/utils/metadata.ts

@@ -1,9 +1,7 @@
-import { createRequire } from 'module';
 import fs from 'node:fs/promises';
 import { fileURLToPath } from 'node:url';
 import { ImageMetadata, InputFormat } from '../types.js';
-const require = createRequire(import.meta.url);
-const sizeOf = require('image-size');
+import sizeOf from 'image-size';
 
 export interface Metadata extends ImageMetadata {
 	orientation?: number;

packages/astro/src/core/sync/index.ts

@@ -67,6 +67,7 @@ export async function sync(
 			{
 				server: { middlewareMode: true, hmr: false },
 				optimizeDeps: { entries: [] },
+				ssr: { external: ['image-size'] },
 				logLevel: 'silent',
 			},
 			{ settings, logging, mode: 'build', command: 'build', fs }