factorial-calculator
A simple module to calculate the factorial of a number
Installation
Install via NPM:
npm install factorial-calculator
Usage
JavaScript (node)
const factorial = require("factorial-calculator/dist-node");
factorial(5); // 5*4*3*2*1 -> 120
TypeScript / JavaScript
import factorial from 'factorial-calculator/src';
factorial(4); // 4*3*2*1 -> 24
If function's argument less than 0 (negative number) or not a number at all the factorial function will return NaN