⚡ num-parity-core

A minimal, fast and reliable Node.js utility to detect number parity (even or odd).

🚀 Why num-parity-core?

Because number validation should be instant, predictable, and dependency-free.

No frameworks. No noise. Just logic.

📦 Installation

 npm install num-parity-core 

🧠 Usage

const { isEven, parity } = require("num-parity-core");

// Boolean check
console.log(isEven(10)); // true
console.log(isEven(7));  // false

// Human-readable result
console.log(parity(10)); // "even"
console.log(parity(7));  // "odd"

⚙️ API Reference

isEven(number)

Returns true if the number is even, otherwise false.

isEven(4); // true
isEven(9); // false
parity(number)

Returns a string representing the number parity:

"even" "odd"

parity(2); // "even"
parity(3); // "odd"

🧪 Example

for (let i = 1; i <= 10; i++) {
  console.log(i, "→", parity(i));
}

Output:

1 → odd
2 → even
3 → odd
4 → even
5 → odd
6 → even
7 → odd
8 → even
9 → odd
10 → even

⚡ Features

⚡ Ultra lightweight 🧠 Zero dependencies 🚀 Fast execution 📦 Works in Node.js 🧩 Simple and predictable API

📌 Roadmap

TypeScript support ESM module support CLI tool (npx num-parity-core) Browser compatibility Benchmark optimizations 🤝 Contributing

Pull requests are welcome.

Keep it simple. Keep it clean.

📄 License

MIT — use freely, build freely, improve freely.