perf: lazy-load KaTeX via dynamic import of @streamdown/math#8874
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perf: lazy-load KaTeX via dynamic import of @streamdown/math#8874
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The math plugin for the markdown renderer was statically imported, pulling katex (~264 KB) into the critical path. Convert to a dynamic import so katex loads on demand after the first render.
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Bundle ReportChanges will decrease total bundle size by 813.89kB (-3.18%) ⬇️. This is within the configured threshold ✅ Detailed changes
Affected Assets, Files, and Routes:view changes for bundle: marimo-esmAssets Changed:
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Pull request overview
This PR improves frontend initial-load performance by deferring the markdown math plugin (and its KaTeX payload) until after the first render, via a dynamic import.
Changes:
- Removed the static
@streamdown/mathimport from the markdown renderer. - Added a
useMathPluginhook with a module-level cache to dynamically load the math plugin on mount. - Wired the (possibly-lazy) plugins object into the
<Streamdown />renderer.
Light2Dark
approved these changes
Mar 26, 2026
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The math plugin for the markdown renderer was statically imported,
pulling katex (~264 KB) into the critical path. Convert to a dynamic
import so katex loads on demand after the first render.