What does this require() statement mean?

Question

I am looking at the code example in https://github.com/mjhea0/passport-local-express4

I encountered this require() statement.

app.use(require('morgan')('combined'));

All the other require statements I have used looks something like var XXX = require('module_name');

What does app.use(require('morgan')('combined')); mean? Load both 'morgan' and 'combined' modules?

Answer 1

Better practice to declare your dependencies all in one place. You can do something like this:

var morgan = require('morgan');

...

app.use(morgan('combined')) /* combined is added as a parameter of morgan */

Makes your codebase easier to maintain.

See docs here: https://github.com/expressjs/morgan