feat(route): introduce /nextjs/blog (#16049)

* feat(route): introduce `/nextjs/blog`

* fix: set limits to 20 posts

* fix: remove unnecessary cache according to #16038

* fix: cache individual post

* fix: cache item

* docs: fix name

---------

lib/routes/nextjs/blog.ts

@@ -0,0 +1,63 @@
+import type { DataItem, Route } from '@/types';
+import { parseDate } from '@/utils/parse-date';
+import cache from '@/utils/cache';
+import { load } from 'cheerio';
+import ofetch from '@/utils/ofetch';
+
+const handler: Route['handler'] = async () => {
+    const data = await ofetch('https://nextjs.org/blog');
+
+    const $ = load(data);
+
+    const item = (await Promise.all(
+        $('article')
+            .toArray()
+            .slice(0, 20)
+            .map((item) => {
+                const $ = load(item);
+                const link = `https://nextjs.org${$('a[href^="/blog"]').attr('href')}`;
+
+                return cache.tryGet(`nextjs:blog:${link}`, async () => {
+                    const data = await ofetch(link);
+
+                    const $ = load(data);
+
+                    return {
+                        title: $('h1').first().text().trim(),
+                        link,
+                        description: $('div.prose').html() ?? '',
+                        pubDate: parseDate(
+                            $('p[data-version="v1"]')
+                                .first()
+                                .text()
+                                .replace(/st|nd|rd|th/, '')
+                        ),
+                    };
+                });
+            })
+    )) as DataItem[];
+
+    return {
+        title: 'Next.js Blog',
+        link: 'https://nextjs.org/blog',
+        language: 'en-US',
+        item,
+    };
+};
+
+export const route: Route = {
+    path: '/blog',
+    name: 'Blog',
+    categories: ['program-update'],
+    maintainers: ['equt'],
+    example: '/nextjs/blog',
+    features: {
+        requireConfig: false,
+        requirePuppeteer: false,
+        antiCrawler: false,
+        supportBT: false,
+        supportPodcast: false,
+        supportScihub: false,
+    },
+    handler,
+};

lib/routes/nextjs/namespace.ts

@@ -0,0 +1,6 @@
+import type { Namespace } from '@/types';
+
+export const namespace: Namespace = {
+    name: 'Next.js',
+    url: 'nextjs.org',
+};