Posts data auto create content loader

posts.data.js

import { createContentLoader } from "vitepress";
import "dotenv/config";

const formatDate = (raw) => {
  const date = new Date(raw);
  date.setUTCHours(12);
  return {
    time: +date,
    string: date.toLocaleDateString("en-US", {
      year: "numeric",
      month: "long",
      day: "numeric",
    }),
  };
};

const base = process.env.BASE_URL;
// Fallback to '/' if the environment variable is not set

const data = createContentLoader("/blog/posts/*.md", {
  excerpt: true,
  transform(raw) {
    return raw
      .map(({ url, frontmatter, excerpt }) => ({
        title: frontmatter.title,
        url: base === "/dev-docs/" ? "/dev-docs" + url : url,
        excerpt,
        date: formatDate(frontmatter.date),
      }))
      .sort((a, b) => b.date.time - a.date.time);
  },
});

export { data };
export default data;