LESS files not getting compiled - node.js

Question

Below is a snippet from my node.js file
I am trying to compile code from LESS into CSS.
Am I missing anything
app.use(lessMiddleware({
src: path.join(__dirname, '/public/stylesheets/styles', 'less'),
dest: path.join(__dirname, '/public/stylesheets/css'),
prefix : '/stylesheets',
}));
When I refresh my index.html, it throws me below error
TypeError: Arguments to path.join must be strings
at f (path.js:204:15)
at Object.filter (native)
at Object.exports.join (path.js:209:40)
at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\less-middleware\lib\mi
ddleware.js:161:27
at Layer.handle [as handle_request] (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\n
ode_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\router\index.js:312:13)
at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\router\ind
ex.js:280:7
at Function.process_params (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modul
es\express\lib\router\index.js:330:12)
at next (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\rout
er\index.js:271:10)
at expressInit (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\middleware\init.js:33:5)
TypeError: Arguments to path.join must be strings
at f (path.js:204:15)
at Object.filter (native)
at Object.exports.join (path.js:209:40)
at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\less-middleware\lib\mi
ddleware.js:161:27
at Layer.handle [as handle_request] (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\n
ode_modules\express\lib\router\layer.js:95:5)
at trim_prefix (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\router\index.js:312:13)
at C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\router\ind
ex.js:280:7
at Function.process_params (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modul
es\express\lib\router\index.js:330:12)
at next (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\lib\rout
er\index.js:271:10)
at expressInit (C:\SrkOwnRepo\Hotaaal\HotelUI10892515\node_modules\express\l
ib\middleware\init.js:33:5)
Please provide a workaround or any other middleware.

Answer 1

The less-middleware function has a different interface than the one you showed in the code snippet.
It looks like this lessMiddleware(source, options), where source is a string and options is an object. And it breaks somewhere around here when it tries to to call path.join on source, in your case an object.
You can check out the documentation of the middleware for the accepted parameters in options.