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For Yarn 2+ docs and migration guide, see yarnpkg.com.

Package detail

float-calculator

tuceo8ISC1.1.0

calculate floating number for four operations

float, calculator, floating error, number precision, rounding error

readme

Introduction

Perform addition, subtraction, multiplication and division operations for floating point numbers.

Documentation

Results when performing operations with javascript. 
5.33 + 5.2 === 10.530000000000001
8.13 - 5.75 === 2.380000000000001
8.38 * 0.3 === 2.5140000000000002
4.2 / 1.2 === 3.5000000000000004

Result when performing with float-calculator

mathCalculation("+",5.33, 5.2 ) === 10.53
mathCalculation("-",8.13, 5.75 ) === 2.38
mathCalculation("*",8.38, 0.3) === 2.514
mathCalculation("/",4.2, 1.2 )=== 3.5

Why you need it? if you're dealing with sensitive stuff like monetary transactions, and you don't need to lose the last digits of numbers with methods like toFixed().

Install 

npm i float-calculator

Usage 

import mathCalculation from "float-calculator";
mathCalculation("+",1.2,2,3)
mathCalculation("-",1.2,2,3)
mathCalculation("*",1.2,2,3)
mathCalculation("/",1.2,2,3)