Replace custom LCS word-diff with @sanity/diff-match-patch#101
Merged
tomasz-tomczyk merged 1 commit intomainfrom Apr 25, 2026
Merged
Replace custom LCS word-diff with @sanity/diff-match-patch#101tomasz-tomczyk merged 1 commit intomainfrom
tomasz-tomczyk merged 1 commit intomainfrom
Conversation
The custom tokenize+computeTokenLCS implementation used O(m*n) dynamic
programming on word tokens. Replace it with @sanity/diff-match-patch's
diff algorithm + semantic cleanup, which produces better word-boundary
highlights with less code. The return type ({ oldRanges, newRanges })
and all guard clauses are preserved.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
tokenize+computeTokenLCS(O(m×n) DP) word-diff implementation with@sanity/diff-match-patchmakeDiff+cleanupSemanticfor word-boundary-aligned highlightsapplyWordDiffToHtmland all guard clauses unchanged — return type{ oldRanges, newRanges }preservedWhy: Google's
diff-match-patchis archived.@sanity/diff-match-patchis a maintained TypeScript rewrite (~492K weekly npm downloads) that merges bugfixes Google never accepted.Companion PR: tomasz-tomczyk/crit#347 (pending)
Test plan
🤖 Generated with Claude Code