JSBI-Calculator

JSBI-Calculator is an IE11-compatible calculator utility to perform arbitrary (up to 18 decimals) arithmetic computation, with the help of JSBI-based BigDecimal.

Remarkable contribution from this project to GoogleChromeLabs/jsbi

Installation

``
> npm install jsbi-calculator
`

Showcase

!Showcase

Usage

> For module:

`js
import JBC from "jsbi-calculator";

const { calculator } = JBC;

const expressionOne = "((10 (24 / ((9 + 3) (-2)))) + 17) + 5";
const resultOne = calculator(expressionOne);
console.log(resultOne);
// -> '12'

const max = String(Number.MAX_SAFE_INTEGER);
console.log(max);
// -> '9007199254740991'
const expressionTwo = ${max} + 2;
const resultTwo = calculator(expressionTwo);
console.log(resultTwo);
// -> '9007199254740993'
`

> For node:

`js
const JBC = require("jsbi-calculator");

const { calculator } = JBC;

const expressionOne = "((10 (24 / ((9 + 3) (-2)))) + 17) + 5";
const resultOne = calculator(expressionOne);
console.log(resultOne);
// -> '12'

const max = String(Number.MAX_SAFE_INTEGER);
console.log(max);
// -> '9007199254740991'
const expressionTwo = ${max} + 2;
const resultTwo = calculator(expressionTwo);
console.log(resultTwo);
// -> '9007199254740993'
`

> For browser:

`html












`

Note

The following operations are available. Please mind the factors which are
negative must start with "-" and be surrounded by parentheses, e.g. (-11) and
the positive ones can not start with "+".

| Operation | Symbol |
| -------------- | ----------------------------------- |
| Addition | + |
| Subtration | - |
| Multiplication | * |
| Division | /` |
| Square Root | JBC.BigDecimal.sqrt(num).toString() |

Thanks

Great inspiration by the following resources.

GoogleChromeLabs/jsbi

trincot's answer to _BigDecimal in JavaScript_

LeetCode150 - Evaluate Reverse Polish Notation

Parsing math expressions with JavaScript - FreeCodeCamp

Under the hood