build(deps): bump streamdown from 2.1.0 to 2.3.0

[dependabot]

Bumps streamdown from 2.1.0 to 2.3.0.

Release notes

Sourced from streamdown's releases.

streamdown@2.3.0

Minor Changes

• 3657e42: Add useIsCodeFenceIncomplete hook for detecting incomplete code fences during streaming

  Custom components can now detect when the code fence in their block is still being streamed. This is useful for deferring expensive renders (syntax highlighting, Mermaid diagrams) until the code block is complete.

  import { useIsCodeFenceIncomplete } from "streamdown";
  const MyCodeBlock = ({ children }) => {
  const isIncomplete = useIsCodeFenceIncomplete();
  if (isIncomplete) {
  return <div>Loading code...</div>;
  }
  return (
  <pre>
  <code>{children}</code>
  </pre>
  );
  };

  The hook returns true when:

  • Streaming is active (isAnimating={true})
  • The component is in the last block being streamed
  • That block has an unclosed code fence

  The default code block component now uses this hook to set a data-incomplete attribute when incomplete, enabling CSS-based loading states.

• 32fb079: fix: hide download button on broken images and display a custom "Image not available" message instead

• d73d7bb: Make the action buttons in code block header sticky. Ensures copy buttons remain accessible for long code blocks. Improves usability when viewing large snippets.

• 15645da: Move code block lazy loading to the highlighting layer so block shells render immediately with plain text content before syntax colors resolve. This improves visual stability and removes the spinner fallback for standard code blocks.

Patch Changes

• 0987479: fix: codeblock highlight flicker while streaming
• 5d438ca: Add support for copying table data as Markdown in TableCopyDropdown. Introduces a Markdown copy option alongside existing formats. Allows users to quickly copy tables in valid Markdown format.
• ce9b4c2: Fix syntax highlighting
• ba03332: Redesign Mermaid diagram
• 6e91867: fix nested same-tag HTML block parsing in parseMarkdownIntoBlocks

... (truncated)

Changelog

Sourced from streamdown's changelog.

2.3.0

Minor Changes

• 3657e42: Add useIsCodeFenceIncomplete hook for detecting incomplete code fences during streaming

  Custom components can now detect when the code fence in their block is still being streamed. This is useful for deferring expensive renders (syntax highlighting, Mermaid diagrams) until the code block is complete.

  import { useIsCodeFenceIncomplete } from "streamdown";
  const MyCodeBlock = ({ children }) => {
  const isIncomplete = useIsCodeFenceIncomplete();
  if (isIncomplete) {
  return <div>Loading code...</div>;
  }
  return (
  <pre>
  <code>{children}</code>
  </pre>
  );
  };

  The hook returns true when:

  • Streaming is active (isAnimating={true})
  • The component is in the last block being streamed
  • That block has an unclosed code fence

  The default code block component now uses this hook to set a data-incomplete attribute when incomplete, enabling CSS-based loading states.

• 32fb079: fix: hide download button on broken images and display a custom "Image not available" message instead

• d73d7bb: Make the action buttons in code block header sticky. Ensures copy buttons remain accessible for long code blocks. Improves usability when viewing large snippets.

• 15645da: Move code block lazy loading to the highlighting layer so block shells render immediately with plain text content before syntax colors resolve. This improves visual stability and removes the spinner fallback for standard code blocks.

Patch Changes

• 0987479: fix: codeblock highlight flicker while streaming
• 5d438ca: Add support for copying table data as Markdown in TableCopyDropdown. Introduces a Markdown copy option alongside existing formats. Allows users to quickly copy tables in valid Markdown format.
• ce9b4c2: Fix syntax highlighting
• ba03332: Redesign Mermaid diagram
• 6e91867: fix nested same-tag HTML block parsing in parseMarkdownIntoBlocks
• 7f9127b: Add normalizeHtmlIndentation prop to prevent indented HTML tags from being treated as code blocks

... (truncated)

Commits

• b46781c Version Packages (#397)
• 9562177 Update index.tsx
• d892b14 Misc fixes
• 1102f18 Fix all Biome lint and formatting errors
• 6618620 Update index.tsx
• 184a497 Improve Mermaid error design
• b123322 Hide carets when rendering code blocks and tables
• 0987479 Resolves #402
• 9ef44f7 streamdown: 100% line coverage (778 tests)
• 01de031 streamdown: boost test coverage from 88% to 97.87% (759 tests)
• Additional commits viewable in compare view

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