contentlayer.config.ts

import { defineDocumentType, makeSource } from 'contentlayer/source-files'
import readingTime from 'reading-time'
import rehypeCodeTitles from 'rehype-code-titles'
import rehypePrism from 'rehype-prism-plus'

export const Post = defineDocumentType(() => ({
  name: 'Post',
  filePathPattern: `**/*.mdx`,
  contentType: 'mdx',
  fields: {
    title: {
      type: 'string',
      description: 'The title of the post',
      required: true,
    },
    date: {
      type: 'date',
      description: 'The date of the post',
      required: true,
    },
    excerpt: {
      type: 'string',
      description: 'The excerpt of the post',
      required: true,
    },
    image: {
      type: 'string',
      description: 'The image of the post',
      required: false,
    },
  },
  computedFields: {
    slug: {
      type: 'string',
      resolve: (post) => post._raw.flattenedPath,
    },
    readingTime: {
      type: 'string',
      resolve: (post) => readingTime(post.body.raw).text,
    },
  },
}))

export default makeSource({
  contentDirPath: 'data/posts',
  documentTypes: [Post],
  mdx: {
    rehypePlugins: [rehypeCodeTitles, rehypePrism],
  },
})