CJex/regulex

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

5828 stars · 753 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Regulex is a JavaScript regular expression parser and visualizer that converts regex into ASTs and renders railroad-style diagrams. It runs purely client-side, offers precise syntax error reporting, and is available as an npm package or hosted web tool.

Use cases

• visualize a regular expression as a diagram
• parse regex into an AST in JavaScript
• debug why my regex has a syntax error
• embed a regex diagram on my website
• explain a complicated regular expression visually
• npm library for regex parsing

When to choose

• You need to understand or document a complex JavaScript regex visually
• You want a client-side regex parser with detailed syntax error positions
• You want to embed regex diagrams via iframe

When to avoid

• You need regex flavors beyond ECMAScript (e.g. PCRE, Python)
• You need regex testing/matching rather than visualization
• You need actively developed features - the project is under reconstruction with sparse releases

Facets

library · maturity maintenance

parser data-visualization developer-tools developer-tools parsers web-development browser regex regular-expression ast diagram visualization typescript javascript nodejs web

Member repositories

For agents

markdown · JSON · MCP: product_card(name="CJex/regulex")