utils-regex-from-string

RegExp

Parses a regular expression string and returns a new regular expression.

Installation

$ npm install utils-regex-from-string

Usage

var regex = require( 'utils-regex-from-string' );

regex( str )

Parses a regular expression string and returns a new regular expression.

var re = regex( '/beep/' )
// returns /beep/

Note: provided strings must be properly escaped.

// Unescaped:
re = regex( '/\w+/' );
// returns /w+/
 
// Escaped:
re = regex( '/\\w+/' );
// returns /\w+/

Examples

var regex = require( 'utils-regex-from-string' );
 
console.log( regex( '/beep/' ) );
// returns /beep/
 
console.log( regex( '/[A-Z]*/' ) );
// returns /[A-Z]*/
 
console.log( regex( '/\\\\\\\//ig' ) );
// returns /\\\//ig
 
console.log( regex( '/[A-Z]{0,}/' ) );
// returns /[A-Z]{0,}/
 
console.log( regex( '/^boop$/' ) );
// returns /^boop$/
 
console.log( regex( '/(?:.*)/' ) );
// returns /(?:.*)/
 
console.log( regex( '/(?:beep|boop)/' ) );
// returns /(?:beep|boop)/
 
console.log( regex( '/\\w+/' ) );
// returns /\w+/

To run the example code from the top-level application directory,

$ node ./examples/index.js

Tests

Unit

Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:

$ make test

All new feature development should have corresponding unit tests to validate correct functionality.

Test Coverage

This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

$ make test-cov

Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,

$ make view-cov

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License

MIT license.

Copyright

Copyright © 2015. Athan Reines.