node.js - Cannot read property 'render' of undefined -


i making simple program in koa.js in trying rendering information html page i.e index.html , whenever trying run code gives error.. tired of thing, still can't find better solution..

typeerror: cannot read property 'render' of undefined @ object.render (c:\users\hamza\desktop\thefirstkoaapp\task3\app.js:27:8) @ next (native) @ object.dispatch (c:\users\hamza\desktop\thefirstkoaapp\node_modules \koa-router\lib\router.js:331:14) @ next (native) @ onfulfilled (c:\users\hamza\desktop\thefirstkoaapp\node_modules\co\index.js:65:19) @ c:\users\hamza\desktop\thefirstkoaapp\node_modules\co\index.js:54:5 @ object.co (c:\users\hamza\desktop\thefirstkoaapp\node_modules\co\index.js:50:10) @ object.topromise (c:\users\hamza\desktop\thefirstkoaapp\node_modules\co\index.js:119:63) @ next (c:\users\hamza\desktop\thefirstkoaapp\node_modules\co\index.js:100:29) @ onfulfilled (c:\users\hamza\desktop\thefirstkoaapp\node_modules\co\index.js:70:7) @ process._tickcallback (node.js:368:9)

here code..

app.js:

const koa = require('koa'); const router = require('koa-router'); const config = require(__dirname+"/config.js"); const app = new koa();   var route = router(); app.use(route.routes());  var views = require("co-views");  var render = views("views", { map: { html: 'swig' }});  route.all("/hi", function *(req,res){     var myuser = {name:"john"};     res.render ("index",{user:myuser});   //this.body = yield render("index"); });   startkoa(); function startkoa() {     app.listen(config.koa.port);     console.log('listening on port '+config.koa.port); }

index.html:

<html>  <body>  <script>   var username = "{{user.name}}"; </script>  <script src="app.js"></script> </body>  </html>


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