regjsparser

RegJSParser

Parsing the JavaScript's RegExp in JavaScript.

Installation

npm install regjsparser

Usage

var parse = require('regjsparser').parse;

var parseTree = parse('^a'); // /^a/
console.log(parseTree);

// Toggle on/off additional features:
var parseTree = parse('^a', '', {
  // SEE: https://github.com/jviereck/regjsparser/pull/78
  unicodePropertyEscape: true,

  // SEE: https://github.com/jviereck/regjsparser/pull/83
  namedGroups: true,

  // SEE: https://github.com/jviereck/regjsparser/pull/89
  lookbehind: true
});
console.log(parseTree);

Testing

To run the tests, run the following command:

npm test

To create a new reference file, execute…

node test/update-fixtures.js

…from the repo top directory.

Similar packages

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regexpp

regexpp is a regular expression parser for ECMAScript. It parses regular expressions into an AST and provides utilities for traversing and analyzing the AST. Compared to regjsparser, regexpp offers more detailed error messages and supports the latest ECMAScript features.

regexp-tree

regexp-tree is a regular expression processing library that includes a parser, transformer, and optimizer. It parses regular expressions into an AST and provides tools for transforming and optimizing them. Unlike regjsparser, regexp-tree focuses on providing a complete suite of tools for working with regular expressions.

regex-parser

regex-parser is a simple library for parsing regular expressions into an AST. It is less feature-rich compared to regjsparser and focuses on providing a minimalistic approach to parsing regular expressions.