regex-test

Safely test strings against any regex with a timeout.

Installation

npm:

npm install regex-test

yarn:

yarn add regex-test

GitHub:

git clone https://github.com/venomaze/regex-test.git

Usage

First create a new instance:

const RegexTest = require('regex-test');
 
const regex = new RegexTest({
  timeout: 500, // ms
  safeRegexOnly: true,
});

Then you can use the test method this way:

const pattern = /^([a-zA-Z0-9])(([\-.]|[_]+)?([a-zA-Z0-9]+))*(@){1}[a-z0-9]+[.]{1}(([a-z]{2,3})|([a-z]{2,3}[.]{1}[a-z]{2,3}))$/;
 
regex
  .test(pattern, 'test@mail.com')
  .then(res => console.log(res))
  .catch(err => console.log(err.message));
 
regex
  .test(pattern, 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!')
  .then(res => console.log(res))
  .catch(err => console.log(err.message));

Options

The options are:

• timeout: The timeout for regular expression tests in milliseconds. (Default to 1000)
• safeRegexOnly: If true, throw an error if the regex is a potentially catastrophic exponential-time regular expression. (Default to false)