node.js - How to call node module in express rendered view? -

i'm having difficult time trying understand how pass called data view. i'm requiring mozscape node module in little application i'm trying develop don't quite understand how i'm pass information view. imagine need create object in router , call function in view. mozscapes returns object pass view , use handlebars iterate through data?

here's code router below

//pull in express const express = require('express'); //declare router variable index view const index   = express.router();  //mozscape seo data var mozscape = require('mozscape').mozscape;  //mozscape expects accessid , secretid //only allows 1 call per 10 seconds free plan //need add env file later var moz = new mozscape('mozscape-6d6ab44235', '846aca62a6db69661c81b784115e8a9');   //dummy data var business =     {         name:       'party corner',         address:    '123 main street, red bank, nj',         hours:      'monday through friday 9 - 5',         website:    'http://www.partycorner.com/',         category:   'party supplies',         imgurl:     'https://scontent.fewr1-3.fna.fbcdn.net/v/t31.0-8/14361226_10154547117788288_58127422291546970_o.jpg?oh=126b8240a8ac27dfb06b57ed51f4320e&oe=5a5a8fcc'     };   //middleware process data view var businessseo; businessseo = function (req, res, next) {     req.businessseo = moz.urlmetrics(business.website, ['page_authority', 'links', 'domain_authority'], function (err, res) {         if (err) {             console.log(err);             return;         }         console.log('requesting data moz');          console.log(res);         return res;     }); }; index.use(businessseo); //logging data console.log(businessseo);      //use declare router http methods //get request index request, response, next params index.get('/', function (req, res, next) {      //render response  server using index view declared path in app.js     res.render('index', {         //declare {{ title }} used in main template extended default template         title: "business directory",         //use business object keys , values.. |key val|         business: business,         body:             {                 description: 'this business business directory, how neat that?'             },         mozdata: businessseo     }) });   module.exports = index; 

i'm trying log object in front end right , returns moz not defined. imagine need move business object it's own variable (later quired response) , put function right router , access business website there?

expected output:

object {pda: 24.123844872381643, uid: 187, upa: 33.43142060578742} 

function storedata(param) {     businessseo = param; }  //middleware not needed process data view  businessseo = moz.urlmetrics(business.website, ['page_authority', 'links', 'domain_authority'], function (err, res) {         if (err) {             console.log(err);             return;         }         console.log('requesting data moz');          //console.log(res); sent data variable         storedata(res);     });       //use declare router http methods //get request index request, response, next params index.get('/', function (req, res, next) {     //data has arrived!     console.log(businessseo);