What is the best way to set paths to static files in Node?

Question

Node.js

For example, I have routes in my project:
- project/
- - routers/
- - - regRouter.js

regRouter.js has a page rendering handler:

router.get('/', function (req, res) {
    res.render('/home/nodejs/project/public/views/reg');
});

So far I see 3 options:
1) define a global variable for the project root, initialize it in the main application file and write something like:
res.render(__rootDir + 'public/views/reg');

2) use app-root-path , which will have to be imported into each route file.

3) define the NODE_PATH variable before starting the application, but for some reason it seems that this is a more fragile way.

It is important that the server can have several applications running Node.
Which option would you recommend?

Answer 1

What people don’t go to just not to read the documentation
https://expressjs.com/en/4x/api.html#res.render

The view argument is a string that is the file path of the view file to render. This can be an absolute path, or a path relative to the views setting.

https://expressjs.com/en/4x/api.html#app.set

views
String or Array
A directory or an array of directories for the application's views. If an array, the views are looked up in the order they occur in the array.
default value: process.cwd() + '/views'

So somewhere at the beginning of the application you need to write app.set('views', 'public/views') , and in the handler res.render('reg') .
Everything.