next.config.mjs

import remarkGfm from "remark-gfm"; // 请使用 3.0.1  如果使用 4.0.0 data undefined
import remarkFrontmatter from "remark-frontmatter";
import remarkMdxFrontmatter from "remark-mdx-frontmatter";
import rehypeSlug from "rehype-slug";
import rehypeAutolinkHeadings from "rehype-autolink-headings";
import rehypeExtractToc from "@stefanprobst/rehype-extract-toc";
import rehypeExtractTocMdx from "@stefanprobst/rehype-extract-toc/mdx";
import rehypePrettyCode from "rehype-pretty-code";

import moonlightTheme from "./src/config/moonlight-ii.json" assert { type: "json" };
import createMDX from "@next/mdx";
// import { visit } from "unist-util-visit";

/**
 * @type {import('next').NextConfig}
 */
const nextConfig = {
  pageExtensions: ["js", "jsx", "mdx", "ts", "tsx"],
  reactStrictMode: true,
  // experimental: {
  //   mdxRs: true,
  // },
};
/** @type {import('rehype-pretty-code').Options} */
const options = {
  keepBackground: true,
  // filterMetaString: (string) => string.replace(/filename="[^"]*"/, ""),
  filterMetaString: (string) => string.replace(/filename/, "title"),
  theme: {
    dark: "github-dark-dimmed",
    light: moonlightTheme,
  },
  defaultLang: {
    block: "plaintext",
    inline: "plaintext",
  },
};

const withMDX = createMDX({
  options: {
    remarkPlugins: [
      remarkGfm, // 不支持in code `code`
      remarkFrontmatter,
      remarkMdxFrontmatter,
    ],
    rehypePlugins: [
      rehypeSlug,
      [
        rehypeAutolinkHeadings,
        {
          behavior: "append",
          properties: {
            ariaHidden: true,
            tabIndex: -1,
            className: "hash-link",
          },
        },
      ],
      rehypeExtractToc,
      rehypeExtractTocMdx,
      [rehypePrettyCode, options],
      // () => (tree) => {
      //   visit(tree, "element", (node) => {
      //     if (node.tagName === "code" && node.data && node.data.meta) {
      //       // node.properties.meta = node.data.meta;
      //       console.log({ meta: node.data.meta });
      //     }
      //   });
      // },
    ],
    // 如果使用`MDXProvider`，请取消对以下行的注释。
    // providerImportSource: "@mdx-js/react",
  },
});

export default withMDX(nextConfig);