如何为 RSS 添加图片

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import rss from "@astrojs/rss";
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import { getCollection } from "astro:content";
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import { getPath } from "@/utils/getPath";
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import getSortedPosts from "@/utils/posts/getSortedPosts";
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import { SITE } from "@/config";
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export async function GET() {
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  const posts = await getCollection("blog");
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  const sortedPosts = getSortedPosts(posts);
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  return rss({
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    title: SITE.title,
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    description: SITE.desc,
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    site: SITE.website,
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    items: sortedPosts.map(({ data, id, filePath }) => ({
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      link: getPath(id, filePath),
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      title: data.title,
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      description: data.description,
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      pubDate: new Date(data.modDatetime ?? data.pubDatetime),
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    })),
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    customData: `<image>
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      <url>${SITE.website}/favicon.png</url>
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      <title>${SITE.title}</title>
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      <link>${SITE.website}</link>
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    </image>`,
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  });
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}