blog/src/content.config.ts

import { defineCollection, z } from "astro:content";
import { glob } from "astro/loaders";

const blog = defineCollection({
  loader: glob({ pattern: "**/*.{md,mdx}", base: "./src/content/blog" }),
  schema: ({ image }) =>
    z.object({
      title: z.string(),
      description: z.string(),
      image: image(),
      publishDate: z.coerce.date(),
      updatedDate: z.coerce.date().optional(),
      tags: z.array(z.string()).optional(),
    }),
});

export const collections = {
  blog,
};