feat(registry): add Pretext batch release#23
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Add @chenglou/pretext as a dependency and create the shared pretext registry lib item with React hooks: - usePretext / usePretextWithSegments — prepare text once, cache handle - usePretextLayout — pure-arithmetic layout on every resize - usePretextLines — full line data for custom rendering - useShrinkwrap — binary-search tightest width for same line count - useBalancedWidth — find width where lines are roughly equal
Pretext-powered message bubbles that find the tightest width for the same line count — eliminates the dead space CSS fit-content leaves. - ChatBubble — single message with sent/received variants - ChatThread — vertical message list with timestamps - Shrinkwrap comparison demo (CSS vs Pretext side-by-side) - Client-only rendering (Pretext needs Canvas for measurement) - MDX docs page, card preview, sidebar nav entry
Drop-in text wrapper that balances line widths using Pretext's walkLineRanges binary search. Deterministic, works on any length, and more consistent than CSS text-wrap: balance. - BalancedText — polymorphic element with font/maxWidth props - Side-by-side demo (unbalanced vs balanced for headings and body) - MDX docs page, card preview, sidebar nav entry
Filter out internal lib items like 'pretext' from the DependencyBadges display. These are installed automatically as transitive deps — showing both 'pretext' and '@chenglou/pretext' was redundant and confusing.
…ranges Paragraph text with highlighted ranges that wrap correctly across line breaks. Pretext measures exact character positions per line so highlight backgrounds sit perfectly — no DOM measurement. - TextHighlight — renders text with colored highlight ranges - Supports labels, multiple colors, and multi-line wrapping - MDX docs page, card preview, sidebar nav entry
- Ship pretext hooks as a public documented registry item with interactive demo (slider showing live line count / shrinkwrap / balanced) - Add masonry-grid component with Pretext height prediction - Make all Pretext hooks SSR-safe (return null during server render, lazy-require @chenglou/pretext only in browser) - Update balanced-text and chat-bubble for nullable hook returns - MDX docs pages, card previews, sidebar nav entries for both
…t components - Add PretextTestimonialMasonry — masonry testimonial layout with Pretext height prediction, wraps existing TestimonialCard - Rename all Pretext component titles to 'Pretext <Name>' pattern across registry.json, MDX frontmatter, and sidebar nav - Separate component avoids adding @chenglou/pretext as a dep to the existing testimonial item
Drop Pretext dependency from text-highlight — inline <mark> elements wrap correctly across line breaks natively. No JS measurement needed. - Server-compatible (works in RSC and SSR) - Simpler implementation, zero dependencies - Fixes misaligned highlights caused by Pretext whitespace normalization - Remove unused font/lineHeight/maxWidth props
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Summary
Adds a focused Pretext batch to jalco-ui built around Cheng Lou's
@chenglou/pretext.New registry items
pretext— public hooks for DOM-free text measurementchat-bubble— Pretext shrinkwrap message bubblesbalanced-text— deterministic balanced line widthsmasonry-grid— text-aware masonry with height predictionAlso included
2026.04.0release entry: PretextWhy
I wanted jalco-ui to lean into developer-facing, technically interesting UI primitives instead of generic library filler. Pretext felt like the perfect fit — it unlocks text-layout behaviors that are hard or impossible to do cleanly with normal DOM measurement.
Verified
pnpm previews:generatepnpm registry:buildpnpm buildNotes
I originally explored a couple of extra experiments (
text-highlight,pretext-testimonial) during the branch and removed them before landing because they didn’t clear the quality bar.