The engine can't recognise .hbs extension with partials

[r-h36]

Env settings:

node 10.15.1
npm 6.4.1
handlebars 4.1.2
express 4.16.4

Just updated the express-handlebars from 3.0.0 to 3.1.0
run into this issue:
server.js

const exphbs = require('express-handlebars');
const hbsHelpers = require('./config/hbsHelpers');
const hbs = exphbs.create({
    extName: '.hbs',
    partialsDir: 'views/partials/',
    layoutsDir: 'views/layouts/',
    defaultLayout: 'main.hbs',
    helpers: hbsHelpers,
});
app.set('views', path.join(__dirname, 'views'));
app.engine('.hbs', hbs.engine);
app.set('view engine', '.hbs');

app.get('/', function (req, res) {
    res.render('test.hbs');
})

The extName is defined in the config.

in test.hbs

<div class="wrapper home">
    <h1>Test Page</h1>
    
    {{> pages/nav }}
</div>

File structure

.
├── app.js
└── views
    ├── test.hbs
   └── partials
              └── pages
                        └──nav.hbs

This results in error
Error: The partial pages/nav could not be found

But if I change the nav.hbs to nav.handlebars, the error is gone.

nav.hbs used to be working fine before I update the express-handlebars to 3.1.0

[PhilHannent]

Are you sure this isn't a case sensitive issue:

extname

[noslouch]

just want to throw in here that the handlebars engine wasn't recognizing partials with .hbs until I specified it in the value passed to app.engine, even though templates were recognized just fine.

I passed in {extname: 'hbs'} to the engine factory function and it started picking up partials with an .hbs extension. This worked for me with and without a leading dot, i.e. using hbs and .hbs as the value for extname worked the same.

const express = require('express');
const hbs = require('express-handlebars');


const app = express();

// app.engine('hbs', hbs());
app.engine('hbs', hbs({ extname: 'hbs' ));
app.set('view engine', 'hbs');

[Benja1512]

const express = require('express');
const exphbs = require('express-handlebars');
const path = require('path');
const router = require('./routes');

const app = express();

// habilitar handlebarss como view

app.engine('.hbs',
exphbs.engine({
defaultLayout: 'layout'
})
);