This package currently consists of 35 common RegExp patterns. We hoping to be the largest collection of this sort with the contribution of all who find it useful. Highlights:

• Built-up with a Functional Programming Paradigm in mind
• Easy to use and get started with
• Light-weight, minified version is ~92kb
• No dependencies, we tried avoiding the clutter of dependencies
• Consistency across browsers (including the notorious Internet Explorer)
• MIT Licensed, perfect for personal and commercial use

Getting started

Installation

Currently only available on npm.

npm install pregx --save

Alternatively, you may include the files in the dist/ folder in your HTML pages:

<!-- DEVELOPMENT VERION -->
<script type="text/javascript" src="./dist/pregx.js"></script>

<!-- PRODUCTION VERION -->
<script type="text/javascript" src="./dist/pregx.min.js"></script>

Import / require() Package

ES6 Import Approach

Start by either importing all functions from from pregx, eg:

import * as pregx from 'pregx'

Or, more preferably, import only the functions you require via destructuring, eg:

import { getDate, getIp, getIsbn, getDomain, getUrl } from 'pregx'

NPM / CommonJS require() Approach

var pregx = require('pregx')

Use-case Examples

A few perfect examples of PregX's usefulness would be:

getCreditCardNumber()

Supports all major credit cards types: American Express (Amex); Discover; Mastercard & Visa. This function matches Visa card numbers by default.

let str = `
My Visa card number: 			 4111111111111111
My MasterCard card number: 		 5500000000000004
My American Express card number:         370000000000009
My Discover card number: 		 6011000000000004
`

console.log( getCreditCardNumber(str) )
// matches: ["4111111111111111"]

console.log( getCreditCardNumber(str, { cardType: 'mastercard' }) )
// matches: ["5500000000000004"]

console.log( getCreditCardNumber(str, { cardType: 'amex' }) )
// matches: ["370000000000009"]

console.log( getCreditCardNumber(str, { cardType: 'discover' }) )
// matches: ["6011000000000004"]

getBTC()

Matches a string that starts with either 1 or 3 followed by a set of 26 to 33 characters of of the variation: a-z; A-Z; and 0-9, excluding invalid Bitcoin address characters such as: O; I; and l.

let str = 'My Bitcoin wallet id is: 3QJmV3qfvL9SuYo34YihAf3sRCW3qSinyC'

console.log( getBTC(str) )
// matches: ['3QJmV3qfvL9SuYo34YihAf3sRCW3qSinyC']

getPostalCode()

Supports all global postal codes. Pattern by default matches five primary digits and allows the option of having a hyphen and four extended digits. This matches all postal codes, however it is possible for there to be a match of five digits that is not a zip code.

let str = `
Postal Code Examples:
	- Canada: A1A 1A1
	- UK: SW1A 2AA
	- Uzbekistan: 200100
	- Japan: 9040205
	- Malta: BML 2060
`

console.log( getPostalCode(str, { format: 'CA' }) ) // matches: ["A1A 1A1"]
console.log( getPostalCode(str, { format: 'GB' }) ) // matches: ["SW1A 2AA"]
console.log( getPostalCode(str, { format: 'UZ' }) ) // matches: ["200100"]
console.log( getPostalCode(str, { format: 'JP' }) ) // matches: ["9040205"]
console.log( getPostalCode(str, { format: 'MT' }) ) // matches: ["BML 206"]

getPOBox()

Matches 'POB ...', 'PO Box ...'and 'Post Office Box ...'

let str = `
Mail us at: PO Box 47369
Mail us at: POB 47369
Mail us at: Post Office Box 47369
`

console.log( getPOBox(str) ) // matches: ["PO Box 47369", "POB 47369", "Post Office Box 47369"]

These are only but a few examples of the several commonly used patterns that this awesome collection contains.

Currently Supported Patterns (35)

• [X] alpha-numeric
• [X] alphabet
• [X] btc
• [X] credit-card-number
• [X] date
• [X] digits
• [X] domain
• [X] email
• [X] git-repo
• [X] hex-color
• [X] html-tag
• [X] iban
• [X] ip
• [X] ipv4
• [X] ipv6
• [X] isbn
• [X] mac-address
• [X] md5
• [X] password
• [X] phone-number
• [X] po-box
• [X] postal-code
• [X] price
• [X] sha1
• [X] sha256
• [X] ssn
• [X] street-address
• [X] time
• [X] url-slug
• [X] url
• [X] us-state-abbrev
• [X] us-state
• [X] username
• [X] uuid
• [X] zipcode

I intend to make this package the greatest collection of its kind, and I hope to reach a ~100 patterns.

API & Docs

For further documentation and use-case examples of all APIs, click here.

Credits

A huge thanks to all the devs mentioned in my CREDITS.md file for some of their RegExp patterns that facilitated the compilation of PregX, which otherwise would have been more of a pain to build. Thanks a lot. :)

Contributing

PregX is a free and open source library, and I'd appreciate any help you're willing to give - be it fixing bugs, improving documentation, or suggesting new features or enhancements.

License

PregX is licensed under the MIT License which makes it great for both personal and commercial use.

Enjoy ;)