contentlayer.config.ts

import { defineDocumentType, makeSource } from "contentlayer/source-files";
import rehypePrettyCode from "rehype-pretty-code";
import rehypeSlug from "rehype-slug";

export const Post = defineDocumentType(() => ({
  name: "Post",
  filePathPattern: `posts/**/*.mdx`,
  contentType: "mdx",
  fields: {
    title: { type: "string", required: true },
    description: { type: "string", required: true },
    categories: { type: "list", of: { type: "string" }, required: true },
    publishedAt: { type: "date", required: true },
  },
  computedFields: {
    url: {
      type: "string",
      resolve: (post) => post._raw.flattenedPath.replace(/posts\/?/, ""),
    },
  },
}));

export const Project = defineDocumentType(() => ({
  name: "Project",
  filePathPattern: `projects/**/*.mdx`,
  contentType: "mdx",
  fields: {
    title: { type: "string", required: true },
    description: { type: "string", required: true },
    publishedAt: { type: "date", required: true },
    url: { type: "string", required: true },
  },
}));

export default makeSource({
  contentDirPath: "contents",
  documentTypes: [Post, Project],
  mdx: {
    rehypePlugins: [
      rehypeSlug,
      [
        rehypePrettyCode,
        {
          theme: "github-dark",
          onVisitLine(node: any) {
            // 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: any) {
            node.properties.className.push("line--highlighted");
          },
          onVisitHighlightedWord(node: any) {
            node.properties.className = ["word--highlighted"];
          },
        },
      ],
    ],
  },
});