regex-friendly

Readable, chainable, and type-safe regex helpers for JavaScript & TypeScript.
Stop fighting unreadable regex — write them friendly instead.

✨ Features

• ✅ Chainable transformations (.noSpace().onlyNumbers()...)
• ✅ Static methods for quick one-offs
• ✅ Validations (isEmail, isUUID, isPhoneNumber, etc.)
• ✅ Functions (formatCardNumber, validateCreditCard)
• ✅ String transformations (remove spaces, keep only numbers, reverse, custom regex)
• ✅ 30+ built-in common & advanced regex patterns
• ✅ Fully typed with IntelliSense auto-completion
• ✅ Works in Node.js and modern browsers

📦 Installation

npm install regex-friendly
# or
yarn add regex-friendly
# or
pnpm add regex-friendly

🚀 Usage

Static methods

import RegexFriendly from "regex-friendly";
import { transformations, validations } from "regex-friendly";

RegexFriendly.onlyNumbers("a1b2c3");
// "123"
transformations.removeNumbers("abc123xyz");
// "abcxyz"

RegexFriendly.isEmail("[email protected]");
// true
validations.isUrl("https://example.com");
// true

Chainable methods

RegexFriendly("Hello World 123").noSpace().onlyNumbers().result();
// "123"

Custom transformation

RegexFriendly.custom("foo bar", /foo/g, "baz");
// "baz bar"

Or in a chain:

RegexFriendly("foo bar baz")
  .custom(/foo/, "hello")
  .custom(/baz/, "world")
  .result();
// "hello bar world"

🧩 Available Helpers

🔹 Transformations

• noSpace()
• onlyNumbers()
• onlyLetters()
• reverseString()
• custom(regex, replacement)
• …and more

🔹 Validations

• isEmail()
• isPhoneNumber()
• isUUID()
• isHexColor()
• isIPAddress()
• …and 20+ others

📜 License

MIT © Emmanuel Eze