joonas-factorial-package v1.0.0

Factorial Function This package provides a simple function to calculate the factorial of a number.

Installation To install this package, run the following command:

bash Copy code npm install factorial-package Usage After installation, you can import the package in your JavaScript code:

Using CommonJS: javascript Copy code const factorial = require('factorial-package');

console.log(factorial(5)); // Outputs: 120 Using ES Modules: javascript Copy code import factorial from 'factorial-package';

console.log(factorial(5)); // Outputs: 120 API factorial(n) Calculates the factorial of the given number n.

Parameters: n (integer): The number to calculate the factorial of. Must be a non-negative integer. Returns: The factorial of the number n. Returns 1 for 0!. Returns the string "Input must be a non-negative integer" if n is negative. Examples javascript Copy code // Importing the package const factorial = require('factorial-package');

// Valid examples console.log(factorial(0)); // Outputs: 1 console.log(factorial(5)); // Outputs: 120

// Invalid example console.log(factorial(-1)); // Outputs: "Input must be a non-negative integer" License This project is licensed under the ISC License.