contentlayer.config.ts

// contentlayer.config.ts
import { defineDocumentType, makeSource } from 'contentlayer/source-files'

export const Post = defineDocumentType(() => ({
  name: 'Post',
  filePathPattern: `**/*.mdx`,
  contentType: 'mdx',
  fields: {
    title: { type: 'string', required: true },
    date: { type: 'date', required: true },
    tags: { type: 'list', of: { type: 'string' }, required: true },
    description: { type: 'string', required: true },
    author: { type: 'string', default: 'Eric' },
    image: { type: 'string', required: false },
    isPublished: { type: 'boolean', default: true },
  },
  computedFields: {
    url: { type: 'string', resolve: (post) => `/posts/${post._raw.flattenedPath}` },
    readingTime: {
      type: 'number',
      resolve: (post) => {
        const wordsPerMinute = 200;
        const wordCount = post.body.raw.split(/\s+/g).length;
        return Math.ceil(wordCount / wordsPerMinute);
      },
    },
    slug: {
      type: 'string',
      resolve: (post) => post._raw.flattenedPath,
    },
  },
}))

export default makeSource({
  contentDirPath: 'posts',
  documentTypes: [Post],
})