node.js - express hosting static directory problem

Question

I see many abbreviations:

let app = require('express')();

Then I want to use app.use(express.static('public'));What should I do with this kind of thing?
Must be written separately:

let express = require('express');
let app = express();

Is it true that we can’t be lazy in this kind of situation?

Answer 1

It should always be written like this, concise and clear

let express = require('express');
let app = express();