delete the custom rewriteLatexBracketDelimiters and escapeCurrencyDollars
implementations from markdown-preprocess.ts (~40 lines). the built-in
exports from @assistant-ui/react-streamdown 0.3.4 are strict
improvements:
- normalizeMathDelimiters combines rewriteLatexBracketDelimiters (now
handles double backslashes and trims body whitespace) with
rewriteCustomMathTags (handles [/math]...[/math] and
[/inline]...[/inline] tags that some models emit — new capability
HA didn't have before)
- escapeCurrencyDollars excludes $ as a preceding character, so
display math $$5 is no longer incorrectly escaped (bugfix)
the call site in preprocessMarkdown changes from
rewriteLatexBracketDelimiters(escapeCurrencyDollars(part)) to
normalizeMathDelimiters(escapeCurrencyDollars(part)).
verified: tsc 0 errors, eslint clean, all 16 preprocessMarkdown tests
pass (including currency dollar escaping), vitest 0 new failures,
manual verification of currency amounts, LaTeX bracket delimiters,
display math, and dollar signs inside code blocks.
102d2d5676