[luojiyin1987]

Summary

• Route .mdx fix requests to Core fixMdx(). Keep fixMarkdown() for regular Markdown.
• Remove the batch-wide MDX --fix rejection from fix(cli): prevent unsafe --fix on MDX files #208. Mixed batches now run normally.
• Keep the existing changed check. The CLI writes only files whose fixed content differs.
• Document that --stdin always parses Markdown. --stdin --fix is not safe for MDX content.
• Narrow the MDX fix safety claim. Third-party rules control their own fix ranges.
• Extend the package smoke test to fix MDX from the installed tarball.
• Add @mdx-js/mdx as a dev dependency to compile fixed MDX in tests.

Behavior

• Fixes apply to Markdown body text.
• Built-in rules preserve ESM, JSX attributes, and JavaScript expressions in supported cases.
• stdin has no file extension. It keeps the existing Markdown behavior.
• MDX autofix currently supports file-path mode only.

Tests

• Mixed Markdown and MDX batch.
• .mdx and .MDX routing.
• ESM, JSX attribute, and expression preservation.
• Fix idempotence.
• Exit code 0 after a complete fix. Exit code 1 when an error remains.
• Unchanged MDX files keep their old mtime.
• stdin without an extension matches fixMarkdown() output.
• Fixed MDX compiles with @mdx-js/mdx.
• Installed package fixes MDX, preserves ESM and JSX attributes, and exits 0.

Checks

• npm run lint
• npm test (259 tests passed)
• npm run test:package