regjsgen [![Build status][ci-img]][ci] [![Code coverage status][codecov-img]][codecov]

Generate regular expressions from regjsparser’s AST.

Installation

npm i regjsgen

API

regjsgen.generate(ast)

This function accepts an abstract syntax tree representing a regular expression (see regjsparser), and returns the generated regular expression string.

const regjsparser = require('regjsparser');
const regjsgen = require('regjsgen');

// Generate an AST with `regjsparser`.
let ast = regjsparser.parse(regex);

// Modify AST
// …

// Generate `RegExp` string with `regjsgen`.
let regex = regjsgen.generate(ast);

Support

Tested on Node.js 16, 18, 20, and 22.
Compatible with regjsparser v0.12.0’s AST.