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Changelog

Unreleased

Added

  • prepare() / prepareWithSegments() accept a fontFeatureSettings option (a CSS font-feature-settings value), and rich-inline items accept a per-item fontFeatureSettings, so text measured with OpenType features — stylistic sets, slashed zero, pinned alternates — wraps where the browser wraps it. Feature measurement uses a hidden DOM canvas, so it needs a document; without one the option is ignored.

Changed

  • Safari soft-hyphen wrapping now follows the same strict insertion-point behavior across layout(), rich-line, and streaming APIs. The Safari compatibility profile was revalidated on Safari 26.4, after previously being validated through Safari 26.3.1.

Fixed

  • Segment measurement now includes a short following context as shaping lookahead — through spaces up to the next visible letter — so cross-boundary kerning and required ligatures (e.g. Hebrew fonts that only ligate a word-final letter when a following letter shares the shaping buffer, even across a space) no longer overstate widths and wrap lines browsers keep whole.

0.0.8 - 2026-06-11

Added

  • The published package now ships declaration maps, so editor go-to-definition and programmatic TypeScript source tracing land in the shipped .ts source instead of the .d.ts files.

Fixed

  • Word-internal keyboard and Unicode symbol runs in long words now stay with surrounding text the way browsers break them, while browser-break symbols stay breakable (#169).
  • Overlong hyphenated runs now prefer browser-like dash breakpoints before falling back to emergency grapheme breaks (#89).

0.0.7 - 2026-05-10

Changed

  • The package now declares itself side-effect-free so bundlers can tree-shake unused entrypoints (#160).
  • layoutNextLine() and layoutNextLineRange() now avoid redundant chunk lookup in chunk-heavy manual layout paths (#140).

Fixed

  • { wordBreak: 'keep-all' } now handles no-space mixed Latin, numeric, and CJK text more like browsers.
  • No-space punctuation chains now stay together for non-ASCII word-like text too, instead of only ASCII words.
  • Opening punctuation such as ¡, ¿, German low quotes, and ⸘ now stays with the following word instead of dangling at line end (#165).
  • Numeric prefix/postfix symbols like $, %, €, +, −, and ° now stay attached to adjacent text the way browser line breaking does (#105).
  • Soft-hyphen breaks now stay at the soft-hyphen insertion point instead of pulling post-hyphen graphemes onto the broken line (#162).
  • Line geometry now preserves browser-style terminal letter spacing, including rich-inline item boundaries and visible soft-hyphen breaks (#171).
  • Rich-inline item boundaries no longer overflow the requested width after a forced-progress break (#132).
  • The markdown chat demo now drops parsed link URLs unless they resolve to HTTP(S) hrefs (#168).

0.0.6 - 2026-04-22

Added

  • Numeric CSS-pixel letterSpacing support on prepare(), prepareWithSegments(), and each existing rich-inline item (#108, #156).

Fixed

  • CJK text followed by opening bracket annotations now wraps like browsers instead of leaving the opening bracket on the previous line (#148).

0.0.5 - 2026-04-09

Added

  • Geometry-first rich line helpers for manual layout work: measureLineStats(), measureNaturalWidth(), layoutNextLineRange(), and materializeLineRange().
  • @chenglou/pretext/rich-inline, a narrow helper for inline-only rich text, mentions/chips, and browser-like boundary whitespace collapse.
  • { wordBreak: 'keep-all' } support on prepare() / prepareWithSegments() for CJK and Hangul text.
  • A virtualized markdown chat demo for rich inline text and pre-wrap layout.

Changed

  • Prepare-time analysis is more resilient on long mixed-script, CJK, Arabic, repeated-punctuation, and other degenerate inputs.

Fixed

  • Mixed CJK-plus-numeric runs, keep-all mixed-script boundaries, and long breakable runs now stay closer to browser behavior.
  • Rich-path bidi metadata and CJK detection now handle the relevant astral Unicode ranges correctly.

0.0.4 - 2026-04-02

Added

  • A justification comparison demo that shows native CSS justification, greedy hyphenation, and a Knuth-Plass-style paragraph layout side by side.

Changed

  • Rich layout is faster on chunk-heavy and long-breakable text.

Fixed

  • layout(), layoutWithLines(), and layoutNextLine() stay aligned on narrow ZWSP / grapheme-breaking edge cases.
  • The justification comparison demo no longer paints justified lines wider than their column.

0.0.3 - 2026-03-29

Changed

  • npm now publishes built ESM JavaScript from dist/ instead of exposing raw TypeScript source as the package entrypoint.
  • TypeScript consumers now pick up shipped declaration files automatically from the published package, while plain JavaScript consumers can install and import the package without relying on dependency-side TypeScript transpilation.

0.0.2 - 2026-03-28

Added

  • { whiteSpace: 'pre-wrap' } mode for textarea-like text, preserving ordinary spaces, tabs, and hard breaks.

0.0.1 - 2026-03-27

Changed

  • Safari line breaking is more accurate for narrow soft-hyphen and breakable-run cases.

0.0.0 - 2026-03-26

Initial public npm release of @chenglou/pretext.

Added

  • prepare() and layout() as the core fast path for DOM-free multiline text height prediction.
  • Rich layout APIs including prepareWithSegments(), layoutWithLines(), layoutNextLine(), and walkLineRanges() for custom rendering and manual layout.