Deprecate Astro.glob (#11826)

This deprecated Astro.glob, see the changeset for details.

.changeset/long-months-rule.md

@@ -0,0 +1,19 @@
+---
+'astro': major
+---
+
+Deprecate Astro.glob
+
+The `Astro.glob` function has been deprecated in favor of Content Collections and `import.meta.glob`.
+
+- If you want to query for markdown and MDX in your project, use Content Collections.
+- If you want to query source files in your project, use `import.meta.glob`(https://vitejs.dev/guide/features.html#glob-import).
+
+Also consider using glob packages from npm, like [fast-glob](https://www.npmjs.com/package/fast-glob), especially if statically generating your site, as it is faster for most use-cases.
+
+The easiest path is to migrate to `import.meta.glob` like so:
+
+```diff
+- const posts = Astro.glob('./posts/*.md');
++ const posts = Object.values(import.meta.glob('./posts/*.md', { eager: true }));
+```

packages/astro/src/runtime/server/astro-global.ts

@@ -5,6 +5,10 @@ import type { AstroGlobalPartial } from '../../types/public/context.js';
 /** Create the Astro.glob() runtime function. */
 function createAstroGlobFn() {
 	const globHandler = (importMetaGlobResult: Record<string, any>) => {
+		// This is created inside of the runtime so we don't have access to the Astro logger.
+		console.warn(`Astro.glob is deprecated and will be removed in a future major version of Astro.
+Use import.meta.glob instead: https://vitejs.dev/guide/features.html#glob-import`);
+
 		if (typeof importMetaGlobResult === 'string') {
 			throw new AstroError({
 				...AstroErrorData.AstroGlobUsedOutside,

packages/astro/src/types/public/context.ts

@@ -219,6 +219,7 @@ export interface AstroGlobalPartial {
 	 * ```
 	 *
 	 * [Astro reference](https://docs.astro.build/en/reference/api-reference/#astroglob)
+	 * @deprecated Astro.glob is deprecated and will be removed in the next major version of Astro. Use `import.meta.glob` instead: https://vitejs.dev/guide/features.html#glob-import
 	 */
 	glob(globStr: `${any}.astro`): Promise<AstroInstance[]>;
 	glob<T extends Record<string, any>>(