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@libraz/mejiro

v0.5.0

Published

Japanese vertical text layout engine for the web — line breaking, kinsoku shori, hanging punctuation, ruby, EPUB parsing/authoring, and pagination

Vulnerabilities

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Links

Git

Maintainers

librazlibraz

Keywords

japanesevertical-textline-breakingkinsokutypographyrubyfuriganapaginationepubjlreqwriting-mode

Readme

@libraz/mejiro

npm version license

Japanese vertical text layout engine for the web — line breaking, kinsoku shori, hanging punctuation, ruby, image exclusion, and EPUB parsing/authoring. The core has zero DOM dependencies. Pairs with @libraz/mejiro-react / @libraz/mejiro-vue for ready-to-use reader/editor components.

Install

npm install @libraz/mejiro

Quick start

import { DEFAULT_HEADING_STYLES, MejiroBook } from '@libraz/mejiro/book';
import { parseEpub } from '@libraz/mejiro/epub';

const book = new MejiroBook({
  fontFamily: '"Noto Serif JP"',
  fontSize: 16,
  lineSpacing: 1.8,
  headingStyles: DEFAULT_HEADING_STYLES,
});
book.computePageSize(document.querySelector('.reader')!);

const epub = await parseEpub(epubBuffer);
const layout = await book.layoutChapter(epub.chapters[0]);
const spread = layout.getSpread(0);

Subpath exports

| Import path | Description | |---|---| | @libraz/mejiro | Core: line breaking, kinsoku, hanging, ruby, image exclusion | | @libraz/mejiro/browser | Font measurement + browser integration | | @libraz/mejiro/epub | EPUB parsing, EditableEpub, EpubProject | | @libraz/mejiro/render | Layout → render data + CSS | | @libraz/mejiro/book | High-level MejiroBook / ChapterLayout API | | @libraz/mejiro/image | Browser-side image decode / downscale helpers |

Documentation

License

Apache License 2.0