You can sum numbers that cannot execute in javascript.
Install
$ npm install sum-big-numbers
Usage
import sumBigNumbers from "sum-big-numbers"
or
const sumBigNumbers = require("sum-big-numbers")
sumBigNumbers("1", "2", "3")
// 6
sumBigNumbers("99999999999999999999999999999999999999999999", "1")
// 100000000000000000000000000000000000000000000