refactor: migrate files to typescript and update config

- rename remark-reading-time from .mjs to .mts
- add allowImportingTsExtensions to tsconfig
- convert rss.xml.js to rss.xml.ts with type safety improvements

Author: leonism

astro.config.mjs

@@ -4,7 +4,7 @@ import spotlightjs from '@spotlightjs/astro';
 import mdx from '@astrojs/mdx';
 import tailwind from '@astrojs/tailwind';
 import sitemap from '@astrojs/sitemap';
-import { remarkReadingTime } from './src/utils/remark-reading-time.mjs';
+import { remarkReadingTime } from './src/utils/remark-reading-time.mts';
 import htmlMinifier from './src/integrations/html-minifier.mjs';
 
 // https://astro.build/config

src/pages/rss.xml.js src/pages/rss.xml.tssrc/pages/rss.xml.js renamed to src/pages/rss.xml.ts

@@ -1,3 +1,4 @@
+import type { APIContext } from "astro";
 import rss from '@astrojs/rss';
 import { getCollection } from 'astro:content';
 import { SITE_TITLE, SITE_DESCRIPTION } from '../consts';
@@ -7,7 +8,7 @@ export async function GET(context: APIContext) {
   return rss({
     title: SITE_TITLE,
     description: SITE_DESCRIPTION,
-    site: context.site,
+    site: context.site || 'https://example.com', // Provide a default or handle undefined
     items: posts.map((post) => ({
       title: post.data.title,
       pubDate: post.data.pubDate,

src/utils/remark-reading-time.mjs src/utils/remark-reading-time.mtssrc/utils/remark-reading-time.mjs renamed to src/utils/remark-reading-time.mts

@@ -7,6 +7,7 @@
     "forceConsistentCasingInFileNames": true,
     "strict": true,
     "skipLibCheck": true,
+    "allowImportingTsExtensions": true,
     "jsx": "react-jsx",
     "jsxImportSource": "react",
     "allowJs": true,