You may know the touch command from your command line which creates an empty file if it doesn’t exist. This tutorial shows you how to implement touch in Node.js. You’ll implement a function that creates an empty file using Node.js. You’ll walk through an asynchronous …

JSON web tokens (JWT) are widely accepted on the Internet. You’ll find countless tutorials using JWT authentication. Most of them showing how to sign a JWT using an HMAC-based algorithm which is a quick way to get started. We both know that the copied code from a tutorial is …

With the release of Node.js v8, async functions became an integral component. Async functions provide a simpler API around promises by removing (most) of the callback-y code. The combination of async/await and promises is powerful, but you have to be careful not going too sequential. This tutorial shows …

All the previous JWT tutorials use a cryptographic signing to verify the token’s validity. Created tokens didn’t use any payload encryption. In case an attacker has access to a user’s JWT, they can seamlessly read the token payload. Verifying JWTs ensures that the requesting user sends a …

Async functions are part of Node.js since version 7.6. They received a boost in attention with the stable release of Node.js v8 because it’s one of the major new features. When using async functions in your projects, you may encounter situations where you want to serialize …

Starting out with JSON Web Token (JWT) is pretty straightforward. Typically, you’ll create a JWT with a secret key and verify it using the same secret. In cryptography, this is a symmetric signature. Most of the tutorials on the Internet use symmetric algorithms because it’s a simple way …

NPM has large ecosystem of JavaScript modules. During development, you may add dependencies to your project and may not need them anymore at a later point. Using the NPM CLI to install dependencies will add the module to your project dependencies by adding it to your package.json file. In …