devongovett/regexgen

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

3422 stars · 102 forks observed · 2026-08-28

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

A JavaScript library and CLI that generates minimal regular expressions matching a given set of strings, using a trie, DFA minimization, and Brzozowski's algebraic method. It supports Unicode/ES2015 regex output and is installable via npm.

Use cases

• generate a regex from a list of example strings
• build compact regexes for emoji sequences
• automatically create regex for keyword matching
• minimize regular expressions covering a string set
• generate regex patterns from sample data via CLI

When to choose

• you have a finite set of strings and want a compact regex matching exactly those
• you want programmatic regex generation in Node.js or a quick CLI one-liner
• you need Unicode-aware regexes including emoji ZWJ sequences

When to avoid

• you need regexes from examples that generalize beyond the given strings
• you need regex generation in a non-JavaScript runtime
• you need full regex features like backreferences or lookarounds

Facets

library · maturity maintenance

parser developer-tools developer-tools programming-languages cli cross-platform regex-generation trie dfa-minimization javascript algorithms nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="devongovett/regexgen")