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'

/** @type {import('contentlayer/source-files').ComputedFields} */
const computedFields = {
  slug: {
    type: 'string',
    resolve: (doc) => `/${doc._raw.flattenedPath}`,
  },
  slugAsParams: {
    type: 'string',
    resolve: (doc) => doc._raw.flattenedPath.split('/').slice(1).join('/'),
  },
}

export const Doc = defineDocumentType(() => ({
  name: 'Doc',
  filePathPattern: `**/*.md`,
  contentType: 'mdx',
  fields: {
    title: {
      type: 'string',
      required: true,
    },
    date: {
      type: 'string',
    },
    author: {
      type: 'string',
    },
    image: {
      type: 'string',
    },
    meetupLink: {
      type: 'string',
    },
    published: {
      type: 'boolean',
      default: true,
    },
  },
  computedFields,
}))

export default makeSource({
  contentDirPath: './content',
  documentTypes: [Doc],
  mdx: {
    remarkPlugins: [remarkGfm],
    rehypePlugins: [
      rehypeSlug,
      [
        rehypePrettyCode,
        {
          theme: 'github-dark',
          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: ["subheading-anchor"],
      //       ariaLabel: "Link to section",
      //     },
      //   },
      // ], // TODO: figure out why heading links conflcts with the special summary link component
    ],
  },
})