contentlayer.config.ts

import {
  ComputedFields,
  defineDocumentType,
  defineNestedType,
  makeSource,
} from "contentlayer2/source-files";
import rehypeAutoLinkHeadings from "rehype-autolink-headings";
import rehypeSlug from "rehype-slug";
import remarkCodeImport from "remark-code-import";
import remarkGfm from "remark-gfm";
import { Plugin } from "unified";
import { extractHeadings } from "./lib/toc";

const computedFields: ComputedFields<"Doc"> = {
  slug: {
    type: "string",
    resolve: (doc) => `/${doc._raw.flattenedPath}`,
  },
  slugAsParams: {
    type: "string",
    resolve: (doc) => doc._raw.flattenedPath.split("/").slice(1).join("/"),
  },
  headings: {
    type: "json",
    resolve: async (doc) => {
      const headings = extractHeadings(doc.body.raw);
      console.log("headings is ", headings);
      return headings;
    },
  },
};

const LinksProperties = defineNestedType(() => ({
  name: "LinksProperties",
  fields: {
    doc: {
      type: "string",
    },
    api: {
      type: "string",
    },
  },
}));

export const Doc = defineDocumentType(() => ({
  name: "Doc",
  filePathPattern: `docs/**/*.mdx`,
  contentType: "mdx",
  fields: {
    title: {
      type: "string",
      required: true,
    },
    description: {
      type: "string",
      required: true,
    },
    published: {
      type: "boolean",
      default: true,
    },
    links: {
      type: "nested",
      of: LinksProperties,
    },
    featured: {
      type: "boolean",
      default: false,
      required: false,
    },
    component: {
      type: "boolean",
      default: false,
      required: false,
    },
    toc: {
      type: "boolean",
      default: true,
      required: false,
    },
  },
  computedFields,
}));

export default makeSource({
  contentDirPath: "./content",
  documentTypes: [Doc],
  mdx: {
    remarkPlugins: [remarkGfm, remarkCodeImport],
    rehypePlugins: [rehypeSlug as Plugin, rehypeAutoLinkHeadings as Plugin],
  },
});