'TypeError: is not a function' in Node.js

Question

I\'m getting the error while running the following code in Node.js

var assert = require(\'assert\');
var request = require(\'request\');
var index = require(\'./         


        

Answer 1

If you need to expose a specific component, function or a variable to public. You have to exports those components using JavaScript modules.

let add = (a,b)=>{
    return ( a+b);
}
module.exports.add=add;

or if you want to expose multiple functions, you can do as follows.

let add = (a,b)=>{
    return (a+b);
}
let subtract = (a, b)=>{
    return (a-b);
}
module.exports={
   add : add,
   subtract : subtract
};