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This PR was opened by the Changesets release GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.

Releases

streamdown@2.8.0

Minor Changes

• 8b0ca9f: feat: add codeBlockRawLanguages option to render selected code fence languages (e.g. ASCII / box-drawing diagrams) verbatim as monospace text without syntax highlighting

Patch Changes

• a9fb2a2: Keep blank lines inside fenced code blocks in custom tags instead of rendering <!----> placeholders in the code.

• ae6fa3b: Support exactOptionalPropertyTypes: add | undefined to optional props in the public types so possibly-undefined values can be forwarded to <Streamdown> and remend without type errors

• 8aaf182: fix: use logical Tailwind classes (ps-*, border-s-*, text-start, start-*, end-*, ms-*) instead of physical left/right classes so layout mirrors in RTL text. cn now treats logical and physical utilities on the same axis as conflicting, so a consumer className="pl-8" still overrides the built-in padding. The code block keeps physical classes because it is pinned dir="ltr".

• c6f5905: perf: stop re-parsing a Mermaid diagram's SVG every time it re-renders with the same chart

• 66779a8: fix: restore user-content- clobberPrefix on sanitize so raw HTML ids cannot clobber window, and strip the doubled prefix on footnote ids that remark-rehype already prefixed.

• 97c1f87: fix(mermaid): stop showing "Mermaid Error" for a partial chart while its fence streams

  • Keep the loader while a Mermaid fence is still streaming instead of showing the error for a partial chart
  • Show the error once the fence closes, including when the final chart text is unchanged from the last partial render

• ec1489a: Distinguish remark and rehype plugins by function identity when caching processors, so same-name plugins with different closures do not reuse each other's behavior.

• Updated dependencies [ae6fa3b]

  • remend@1.4.1

remend@1.4.1

Patch Changes

• ae6fa3b: Support exactOptionalPropertyTypes: add | undefined to optional props in the public types so possibly-undefined values can be forwarded to <Streamdown> and remend without type errors

@streamdown/code@2.0.1

Patch Changes

• 7dcabc6: Support exactOptionalPropertyTypes: add | undefined to optional props in the plugin option types so possibly-undefined values can be forwarded to createCodePlugin, createMathPlugin and createMermaidPlugin without type errors

@streamdown/math@1.0.4

Patch Changes

• 7dcabc6: Support exactOptionalPropertyTypes: add | undefined to optional props in the plugin option types so possibly-undefined values can be forwarded to createCodePlugin, createMathPlugin and createMermaidPlugin without type errors

@streamdown/mermaid@1.0.4

Patch Changes

• 7dcabc6: Support exactOptionalPropertyTypes: add | undefined to optional props in the plugin option types so possibly-undefined values can be forwarded to createCodePlugin, createMathPlugin and createMermaidPlugin without type errors

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Project	Deployment	Actions	Updated
streamdown	Ready	Preview, v0	Oct 29, 2026 11:22am UTC