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.

2018-01-03: Version 0.3.0

• Add support for named capturing groups (issue #83)
• Add polyfill for fromCodePoint for Nodejs < 4 (issue #86)

2017-02-23: Version 0.2.1

• Correctly specify license in package.json

2016-05-24: Version 0.2.0

• Introduce a third argument to the parse function for toggling (experimental) features
• Add experimental support for parsing "\p{…} and \P{…} in Unicode mode" (issue #78)
• Add -v/--version and -f/--flags arguments to the cli command regjsparser (issue #79)

2015-08-16: Version 0.1.5

• Add better error message on parser errors (issues #74 and #76)

2015-02-28: Version 0.1.4

• Fix parsing of backreferences, which are sometimes parsed as octal escapes (issue #70)

2014-11-25: Version 0.1.3

• Remove the upper limit of hex digits in Unicode code point escapes (issue #69)

2014-08-31: Version 0.1.2

• Change the field ref to matchIndex on the type=reference node (issue #67)

2014-08-30: Version 0.1.1

• Only handle unicode code point escapes if 'u' flag is set (issue #56)
• Remove matchIdx from the AST
• Fix references like /\1/ (issue #57)
• Rename type ref to reference in the AST
• Update regex to match identifier and include script to generate regex

2014-06-29: Version 0.1.0

• first tagged release