unable to call a local module from an application file in node.js

Question

I am beginner in node.js.

I am trying to call a very basic addition module saved in C:\wks\guru99 with file name: Node_03_addition.js. The calling application is also saved in the same location with the name: app.js

Addition Module:

var exports = module.exports = {};
exports.addNumber=function(a,b)
{
return a+b;
};

Application File:

var Addition = require('/.Node_03_addition.js');

console.log(Addition.addNumber(1,2));

when I run the application in cmd using node app.js

I am receiving the error that Module is not found. Can someone please help me with where I am going wrong here.

c:\wks\guru99>node app.js
internal/modules/cjs/loader.js:969
  throw err;
  ^

Error: Cannot find module '/.Node_03_addition.js'
Require stack:
- c:\wks\guru99\app.js
[90m    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:966:15)[39m
[90m    at Function.Module._load (internal/modules/cjs/loader.js:842:27)[39m
[90m    at Module.require (internal/modules/cjs/loader.js:1026:19)[39m
[90m    at require (internal/modules/cjs/helpers.js:72:18)[39m
    at Object.<anonymous> (c:\wks\guru99\app.js:1:16)
[90m    at Module._compile (internal/modules/cjs/loader.js:1138:30)[39m
[90m    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1158:10)[39m
[90m    at Module.load (internal/modules/cjs/loader.js:986:32)[39m
[90m    at Function.Module._load (internal/modules/cjs/loader.js:879:14)[39m
[90m    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)[39m {
  code: [32m'MODULE_NOT_FOUND'[39m,
  requireStack: [ [32m'c:\\wks\\guru99\\app.js'[39m ]
}

Answer 1

SUGGESTION

// Node_03_addition.js
// Declare your function
const addNumber = function(a,b) {
    return a + b;
};

// Export your function
module.exports = {
    addNumber
};

// Application-File.js
// Import your module
const Addition = require('./Node_03_addition');

// Use it
console.log(Addition.addNumber(1,2)); // 3

Answer 2

Addition Module:

var exports = module.exports = {};
exports.addNumber=function(a,b)
{
return a+b;
};

Application File:

var Addition = require('./Node_03_addition.js');

console.log(Addition.addNumber(1,2));