Install

• CDN

<script src="https://cdn.jsdelivr.net/npm/spurv@0.0.136/src/index.iife.js"></script>

• NPM

# normal
npm i spurv
# install to develope dependency
npm i spurv -D

• YARN

# normal
yarn add spurv
# install to develope dependency
yarn add spurv -D

The Documentation

Documentation Link

Playing Around

Let's start from factorial. First import is from Sprurv

import { factorial } from 'spurv';

If using CDN, you can have it with:

const fac = $purv.factorial;

Then doing a simple calculation

const number = 5;
factorial(5);   // ==>  120

It's simple, if you understand the principle of factorial, it's easy to write a function to do this job. But...once you pass a big (how big?🤔️) number to your function, you'll find the result always be the Infinity, and I can tell you the big number is 100

const almost_big = 99;
your_factorial(almost_big);   // ==>  9.33262154439441e+155

const big = 100;
your_factorial(big);          // ==>  Infinity

JavaScript has MAX_SAFE_INTEGER as the limitation of ordinary calculation, it won't let you beyond the limitation. Spurv may break it

factorial(100)                //  ==> 9.332621544394415e+157
factorial(101)                //  ==> 9.42594775983836e+159

// even further!
factorial(150)                //  ==> 5.713383956445855e+262

// at most 
factorial(170)                //  ==> 7.257415615307999e+306 

Don't worry if you pass a decimal, string or any wrong input unintentionally (or intentionally), factorial always return a safe number (and a warm reminder). It means that your program may still work fine but you can also get an error information