feat: add remark modified time plugin

astro.config.mjs

@@ -4,13 +4,14 @@ import sitemap from '@astrojs/sitemap';
 
 import mdx from '@astrojs/mdx';
 
-import { remarkWordCount } from './src/plugins/wordcount.js';
+import { remarkWordCount } from './src/plugins/remark/wordcount.js';
 
 import cloudflare from '@astrojs/cloudflare';
 import remarkMath from "remark-math";
 import rehypeKatex from "rehype-katex";
 
 import partytown from '@astrojs/partytown';
+import {remarkModifiedTime} from "./src/plugins/remark/modified-time.mjs";
 
 export default defineConfig({
   site: 'https://terminal-blog.example.com',
@@ -30,7 +31,7 @@ export default defineConfig({
       theme: 'nord',
       wrap: true
     },
-    remarkPlugins: [ remarkMath, remarkWordCount ],
+    remarkPlugins: [ remarkMath, remarkWordCount, remarkModifiedTime ],
     rehypePlugins: [ rehypeKatex ]
   },
 

src/plugins/remark/modified-time.mjs

@@ -0,0 +1,10 @@
+import { execSync } from "child_process";
+import { statSync } from "node:fs";
+
+export function remarkModifiedTime() {
+    return function (tree, file) {
+        const filepath = file.history[0];
+        const result = execSync(`git log -1 --pretty="format:%cI" "${filepath}"`).toString() || statSync(filepath).mtime.toISOString();
+        file.data.astro.frontmatter.lastModified = result.toString();
+    };
+}