$ show mintlify/mdx
Mintlify's @mintlify/mdx is a thin TypeScript library that wraps next-mdx-remote-client to provide a simplified MDX rendering experience for Next.js applications. It adds rich syntax highlighting via Shiki, including support for language-specific highlighting, line highlights, diffs, and twoslash-powered TypeScript type hover popups. The library exposes three main APIs: `serialize` (server-side compilation), `MDXClient` (client-side rendering), and `MDXRemote` (RSC component that combines both). It includes pre-configured remark plugins (GFM, Smartypants, Math) and rehype plugins (Katex, syntax highlighting) with the ability to extend with custom plugins. The package also provides UI components for twoslash popups and a Shiki transformer for shell placeholder highlighting. The codebase is well-structured with clear separation of concerns, though test coverage is limited to the shell placeholder transformer.
The LLM identified 2 files worth highlighting for reuse:
A Shiki transformer that corrects token coloring for shell placeholder patterns like `<item_name>` in shell code. It walks each line's tokens, identifies placeholders using regex, and ensures the final character of a placeholder receives the same style as the preceding character (fixing a common grammar issue where the last character inherits a different token color). The transformer is self-contained (depends only on @shikijs/types and hast), making it extractable into other projects that use Shiki for shell code rendering.
Defines an Arktype-based schema for validating custom Shiki language definitions (TextMate grammars). It provides a structured type `TextMateGrammar` that combines the `LanguageRegistration` and `IRawGrammar` interfaces with proper type inference and runtime validation. This component is reusable in any project that needs to load or validate custom syntax highlighting grammars, and it demonstrates a clean use of the Arktype library for complex nested object validation.