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