Node.js Best Practices — Security and Config

Node.js Best Practices — Security and Config

Important security considerations and folder structure. Like any kind of apps, JavaScript apps also have to be written well. Otherwise, we run into all kinds of issues later on. In this article, we’ll look at some best practices we should follow when writing Node apps.

Like any kind of apps, JavaScript apps also have to be written well.

Otherwise, we run into all kinds of issues later on.

In this article, we’ll look at some best practices we should follow when writing Node apps.

Block Cross-Site Request Forgeries

We should block cross-site request forgeries.

This is an attacker where attackers can attempt to put data into an application via their own site.

The attacker creates a request with a form or other input that creates requests against an app.

To mitigate cross-site request forgeries, we can use the csurf package.

For instance, we can write:

const express = require(‘express’);  
const csrf = require('csurf');

const app = express();
app.use(csrf());
app.use(function(req, res, next){ 
 res.locals.csrftoken = req.csrfToken(); 
 next();
});

We use the csrf middleware so we can get the CSRF token with the csrfToken method.

Then we can use it in our template with:

<input type="hidden" name="<i>csrf" value={{csrftoken}} />

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