naughtychecker.js

A Node.js module to check for Naughty Strings - strings that have a high probability of causing issues when used as user-input data.

Why Test Naughty Strings?

Even multi-billion dollar companies like Twitter use automated tests to validate the input. You can’t tweet a zero-width space (U+200B) on Twitter:

It’s required to prevent serious errors like “Internal Server Error” for unexpected user inputs during validation.

Installation

Yarn:

  yarn add naughtychecker

npm:

  npm install naughtychecker --save

Usage

Use an offline database of naughty strings (blns.json) to validate the input word:

import NaughtyChecker from 'naughtychecker'
const nc = new NaughtyChecker()

const fromLocal = async () => {
  try {
    const result = await nc.validate('naughty string', {useLocal: true})
    // looks good
  } catch (e) {
    // found naughty string
  }
}

Use an online database of naughty strings from Big List of Naughty Strings to validate the input word:

import NaughtyChecker from 'naughtychecker'
const nc = new NaughtyChecker()

const fromOnline = async () => {
  try {
    const result = await nc.validate('naughty string')
    // looks good
  } catch (e) {
    // found naughty string
  }
}

Inspiration

This project is inspired from Big List of Naughty Strings and uses the naughty strings list from that project.

Contributing

Read the CONTRIBUTING.md to get started. Feel free to Clone the project and submit your improvements via pull requests. Always submit pull requests to the develop branch.

Maintainers

• Gautam krishna R
• Simon Li

Contributors

• Rohit Jha

Release History

• 1.0.0 Initial Release
• 1.0.1 Made a little more efficient
• 1.0.2 Minor performance improvements
• 2.0.0 Promisify NaughtyChecker
• 2.0.1 Minor changes

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