node-classes/app.js

the first code

//create app.js file
const q = require('lodash')
const m = require('./calculator.js')

// const a=require('./add.js')
// const numbers =[1,2,3,4,5];
// const doubledNumbers = q.map(numbers,n => n*2);
// console.log('Original numbers:', numbers);
// console.log('Doubled numbers', doubledNumbers)
// let p=a.add(2,4);
// console.log(p);


let l=m.multiply(5,5);
console.log(l);