contentlayer.config.js

import { defineDocumentType, makeSource } from '@contentlayer/source-files';
import rehypeAutolinkHeadings from 'rehype-autolink-headings';
import rehypePrettyCode from 'rehype-pretty-code';
import rehypeSlug from 'rehype-slug';
import remarkGfm from 'remark-gfm';
import { bundledThemes } from 'shiki';

export const Entry = defineDocumentType(() => ({
  name: 'Entry',
  filePathPattern: `**/*.mdx`,
  contentType: 'mdx',
  fields: {
    title: {
      type: 'string',
      required: true,
      description: 'The title of the post',
    },
    publishedAt: {
      type: 'date',
      required: true,
      description: 'The date the post was published',
    },
    summary: {
      type: 'string',
      required: true,
      description: 'A short summary of the post',
    },
    image: {
      type: 'string',
      required: false,
      description: 'The main image of the post',
    },
    tags: {
      type: 'list',
      required: false,
      description: 'The tags of the post',
      of: { type: 'string' },
    },
  },
  computedFields: {
    slug: {
      type: 'string',
      resolve: (doc) =>
        `/blog/${doc._raw.flattenedPath.toLowerCase().replace(/\s+/g, '-')}`,
    },
  },
}));

export default makeSource({
  contentDirPath: 'content',
  documentTypes: [Entry],
  mdx: {
    remarkPlugins: [remarkGfm],
    rehypePlugins: [
      rehypeSlug,
      [
        rehypePrettyCode,
        {
          theme: {
            dark: 'vitesse-dark',
            light: 'vitesse-light',
          },
          onVisitLine(node) {
            // Prevent lines from collapsing in `display: grid` mode, and allow empty
            // lines to be copy/pasted
            if (node.children.length === 0) {
              node.children = [{ type: 'text', value: ' ' }];
            }
          },
          onVisitHighlightedLine(node) {
            node.properties.className.push('line--highlighted');
          },
          onVisitHighlightedWord(node) {
            node.properties.className = ['word--highlighted'];
          },
        },
      ],
      [
        rehypeAutolinkHeadings,
        {
          properties: {
            className: ['anchor'],
          },
        },
      ],
    ],
  },
});