source.config.ts

import { defineConfig, defineDocs } from "fumadocs-mdx/config";
import { metaSchema, pageSchema } from "fumadocs-core/source/schema";
import rehypeKatex from "rehype-katex";
import remarkMath from "remark-math";
import { rehypeCodeDefaultOptions, remarkMdxMermaid } from "fumadocs-core/mdx-plugins";
import { transformerTwoslash } from "fumadocs-twoslash";
import { createFileSystemTypesCache } from "fumadocs-twoslash/cache-fs";

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

export default defineConfig({
  mdxOptions: {
    remarkPlugins: [remarkMath, remarkMdxMermaid],
    rehypePlugins: (v) => [rehypeKatex, ...v],
    rehypeCodeOptions: {
      themes: {
        light: "github-light",
        dark: "github-dark",
      },
      transformers: [...(rehypeCodeDefaultOptions.transformers ?? []), transformerTwoslash()],
      langs: ["rust", "ts"],
    },
  },
});

transformerTwoslash({
  typesCache: createFileSystemTypesCache(),
});