When we are requiring node modules such as express or bodyParser we will use the var
keyword to create a variable and assign the module. Can't we use const
to declare such modules? That is, instead of this
var express = require('express');
var app = express();
should we do this
const express = require('express');
const app = express();
What is the best way? And why is that?
Mutability should be opt in, rather than opt out.
Whenever possible make everything const
.
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