🐊 Not empty

A lightweight utility to check if a variable is not empty.

Features

• 🎯 Zero dependencies
• 📦 Lightweight (~XKB gzipped)
• 💪 Fully typed (TypeScript)
• 🔍 Preserves type information
• ⚡ Tree-shakeable
• 🧪 Well tested

📦 Installation

npm install not-empty-ts

📚 Usage

import { notEmpty } from "not-empty-ts";

type User = {
	name: string;
	age: number;
};

async function getUser(): Promise<User|null> {
	const response = await fetch("https://api.example.com/user");
	const user = await response.json();
	if (response.ok) {
		return user;
	}
	return null;
}

const user = await getUser();


if (notEmpty(user) && user.age > 29){ // now this is type safe
	console.log("User is older than 29");
}

📘 API

//Checks if the given object is not null or undefined and returns it.
notEmpty<T>(o: T | null | undefined): T

//Checks if the given object is not null and returns it.
notNull<T>(o: T | null): T

//Checks if the given object is not undefined and returns it.
notUndefined<T>(o: T | undefined): T

🤝 Contributing

Contributions are welcome! Please open an issue or submit a pull request.

🚲 Testing

We use Vitest for testing aim for 100% coverage.

npm test

📝 License

MIT