fix: use commit time for cache

apps/svelte.dev/content/docs/kit/10-getting-started/10-introduction.md

@@ -2,6 +2,8 @@
 title: Introduction
 ---
 
+test
+
 ## Before we begin
 
 > If you're new to Svelte or SvelteKit we recommend checking out the [interactive tutorial](https://learn.svelte.dev).

apps/svelte.dev/content/docs/svelte/01-introduction/01-overview.md

@@ -12,7 +12,7 @@ Svelte is a web UI framework that uses a compiler to turn declarative component
 <!--- file: App.svelte --->
 <script lang="ts">
 	let count = $state(0);
-
+	// test
 	function increment() {
 		count += 1;
 	}

apps/svelte.dev/src/routes/tutorial/[...slug]/+page.server.ts

@@ -11,7 +11,7 @@ const redirects = new Map([
 	['event-modifiers', 'svelte/capturing'],
 	['dom-event-forwarding', 'svelte/spreading-events']
 ]);
-
+//test
 export async function load({ params }) {
 	if (!params.slug || params.slug === 'svelte') redirect(307, '/tutorial/svelte/welcome-to-svelte');
 	if (params.slug === 'kit') redirect(307, '/tutorial/kit/introducing-sveltekit');

packages/site-kit/src/lib/markdown/renderer.ts

@@ -9,6 +9,7 @@ import { transformerTwoslash } from '@shikijs/twoslash';
 import { SHIKI_LANGUAGE_MAP, escape, normalizeSlugify, smart_quotes, transform } from './utils';
 import type { Modules } from './index';
 import { fileURLToPath } from 'node:url';
+import { execSync } from 'node:child_process';
 
 interface SnippetOptions {
 	file: string | null;
@@ -174,7 +175,7 @@ export async function render_content_markdown(
 				}
 
 				if (options.copy) {
-					html += `<button class="copy-to-clipboard raised" title="Copy to clipboard" aria-label="Copy to clipboard"></button>`;
+					html += `<button class="copy-to-clipboard raised" title="Copyyyy to clipboard" aria-label="Copy to clipboard"></button>`;
 				}
 
 				html += '</div>';
@@ -510,15 +511,15 @@ function find_nearest_node_modules(file: string): string | null {
 }
 
 /**
- * Get the `mtime` of the most recently modified file in a dependency graph,
+ * Get the commit time of the most recently modified file in a dependency graph,
  * excluding imports from `node_modules`
  */
-function get_mtime(file: string, seen = new Set<string>()) {
-	if (seen.has(file)) return -1;
+function get_commit_time(file: string, seen = new Set<string>()) {
+	if (seen.has(file)) return 0;
 	seen.add(file);
 
-	let mtime = fs.statSync(file).mtimeMs;
 	const content = fs.readFileSync(file, 'utf-8');
+	let latest_commit_time = 0;
 
 	for (const [_, source] of content.matchAll(/^import(?:.+?\s+from\s+)?['"](.+)['"];?$/gm)) {
 		if (source[0] !== '.') continue;
@@ -528,16 +529,22 @@ function get_mtime(file: string, seen = new Set<string>()) {
 		if (!fs.existsSync(resolved))
 			throw new Error(`Could not resolve ${source} relative to ${file}`);
 
-		mtime = Math.max(mtime, get_mtime(resolved, seen));
+		const child_commit_time = get_commit_time(resolved, seen);
+		if (child_commit_time > latest_commit_time) {
+			latest_commit_time = child_commit_time;
+		}
 	}
 
-	return mtime;
+	const file_commit_time = parseInt(
+		execSync(`git log -n 1 --pretty=format:%ct -- ${file}`).toString().trim(),
+		10
+	);
+	return latest_commit_time > file_commit_time ? latest_commit_time : file_commit_time;
 }
 
-const mtime = Math.max(
-	get_mtime(fileURLToPath(import.meta.url)),
-	fs.statSync('node_modules').mtimeMs,
-	fs.statSync('../../pnpm-lock.yaml').mtimeMs
+const commit_time = Math.max(
+	get_commit_time(fileURLToPath(import.meta.url)),
+	get_commit_time('../../pnpm-lock.yaml')
 );
 
 /**
@@ -560,7 +567,7 @@ async function create_snippet_cache(should: boolean) {
 
 	if (fs.existsSync(directory)) {
 		for (const dir of fs.readdirSync(directory)) {
-			if (!fs.statSync(`${directory}/${dir}`).isDirectory() || +dir < mtime) {
+			if (!fs.statSync(`${directory}/${dir}`).isDirectory() || +dir < commit_time) {
 				fs.rmSync(`${directory}/${dir}`, { force: true, recursive: true });
 			}
 		}
@@ -569,15 +576,15 @@ async function create_snippet_cache(should: boolean) {
 	}
 
 	try {
-		fs.mkdirSync(`${directory}/${mtime}`);
+		fs.mkdirSync(`${directory}/${commit_time}`);
 	} catch {}
 
 	function get_file(source: string) {
 		const hash = createHash('sha256');
 		hash.update(source);
 		const digest = hash.digest().toString('base64').replace(/\//g, '-');
 
-		return `${directory}/${mtime}/${digest}.html`;
+		return `${directory}/${commit_time}/${digest}.html`;
 	}
 
 	return {

packages/site-kit/src/lib/markdown/utils.ts

@@ -12,7 +12,7 @@ const escapeReplacements = {
 	'"': '"',
 	"'": '''
 };
-
+//test
 /**
  * @param {string} ch
  */