source.config.ts

import {
  defineConfig,
  defineDocs,
  frontmatterSchema,
  metaSchema,
} from 'fumadocs-mdx/config';
import { remarkMdxMermaid } from 'fumadocs-core/mdx-plugins';
import rehypeKatex from 'rehype-katex';
import remarkMath from 'remark-math';

// You can customise Zod schemas for frontmatter and `meta.json` here
// see https://fumadocs.dev/docs/mdx/collections
export const docs = defineDocs({
  docs: {
    schema: frontmatterSchema,
    postprocess: {
      includeProcessedMarkdown: true,
    },
  },
  meta: {
    schema: metaSchema,
  },
});

export default defineConfig({
  mdxOptions: {
    remarkPlugins: [remarkMath, remarkMdxMermaid],
    // Place it at first, it should be executed before the syntax highlighter
    rehypePlugins: (v) => [rehypeKatex, ...v],
  },
});