@hwycdfatm/is-odd

Returns true if a number is odd, false if even, null if not implemented yet.

⚠️ This is a "work in progress" package that implements odd number checking one number at a time. Currently only supports limited cases. More updates coming soon! 😄

Install

Install with npm:

npm install @hwycdfatm/is-odd

Usage

const isOdd = require('@hwycdfatm/is-odd');

console.log(isOdd(1));  // => true (implemented!)
console.log(isOdd(2));  // => false (implemented!)
console.log(isOdd(3));  // => true (implemented!)
console.log(isOdd(5));  // => true (implemented!)

Current Status

Version 0.0.2 - Only the following cases are implemented:

✅ isOdd(1) → true
✅ isOdd(2) → false
❌ All other numbers → null (not implemented yet)

This package will be updated regularly with more number support. Stay tuned!

API

isOdd(number)

Checks if the given number is odd.

Params

• number {Number}: The number to check

Returns

• {Boolean|null}:
  • Returns true if the number is odd (when implemented)
  • Returns false if the number is even (when implemented)
  • Returns null if not implemented yet
  • Throws TypeError if input is not a finite number

Example

const isOdd = require('@hwycdfatm/is-odd');

console.log(isOdd(1));        // => true
console.log(isOdd(3));        // => true
console.log(isOdd(NaN));      // => throws TypeError
console.log(isOdd(Infinity)); // => throws TypeError

TypeScript

This package includes TypeScript definitions.

import isOdd = require('@hwycdfatm/is-odd');

const result = isOdd(1);  // true
const result2 = isOdd(3); // true

About

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Author

hwycdfatm

License

Copyright © 2026, [hwycdfatm]. Released under the MIT License.