What’s new in MDX v2

MDX v2, after two and a half years of development, introduces significant enhancements over its predecessor, MDX v1, by improving performance and syntax, and adding features such as support for JavaScript expressions and multiple JSX runtimes. The new version modifies the MDX syntax to align more closely with JSX, addressing previous parsing issues, and supports ECMAScript modules exclusively, requiring adjustments for tools that lack ESM support. The update also includes comprehensive documentation improvements, architectural refinements for better error flagging and performance, and TypeScript support. Developers can now integrate MDX v2 more seamlessly with various frameworks like React, Vue, and Preact, though they must be cautious of potential breaking changes during migration. Future updates promise further enhancements, including JavaScript variable declaration support and MDX plugins.

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