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@wzo/regex-diagram

v0.0.1

Published

Framework-agnostic regular-expression railroad-diagram visualizer (parse + layout + render)

Readme

@wzo/regex-diagram

框架无关的正则铁路图(railroad diagram)可视化库。 纯 TypeScript,仅依赖 @eslint-community/regexpp

English

用现代解析器解析正则、布局成铁路图、渲染为 SVG —— 支持命名组、后行断言、\p{}、 具名反向引用、v flag 等现代语法。

▶ 在线 playground 与完整 API 文档:https://nowo.github.io/regex/docs/getting-started

安装

pnpm add @wzo/regex-diagram

用法

import { buildDiagram, parseRegex, regexToSvg, renderToSvg, toRegexLiteral } from '@wzo/regex-diagram'

// 一站式:正则 → SVG 字符串
const svg = regexToSvg('(\\d{3})-(\\d{4})', 'g')

// 分步(更灵活)。parseRegex 返回 { ok, ast, issues }:
const r = parseRegex(source, flags)
if (r.ok) {
  const diagram = buildDiagram(r.ast) // 带坐标的图模型
  const svg2 = renderToSvg(diagram) // 图模型 → 静态 SVG
}

// 从 source + flags 拼出合法的正则字面量(转义 `/`、处理空值):
toRegexLiteral('a/b', 'g') // → "/a\/b/g"
toRegexLiteral('', '') // → "/(?:)/"

致谢

灵感来自 regulexregex101

许可

MIT © 2026 nowo