This tutorial shows you how to create a complete CRUD-like API with Deno and Postgres without relying on Node.js or the node_modules directory

Created by the minds behind Node.js, Deno is similarly gaining traction among developers.

After maturing and evolving features that Node failed to deliver such as security, modules, and dependencies, Deno is proving to be as powerful as its predecessor.

It’s basically a TypeScript runtime built on top of the robust Google V8 Engine. But don’t worry, Deno also supports vanilla JavaScript, which is what we’ll be using in this article.

Deno was created under a few conditions:

First off, it’s secure, meaning that its default execution is based in a sandbox environment.

There’s no access from runtime to things like network, file system, etc. When your code tries to access these resources, you’re prompted to allow the action.

It loads modules by URLs (like the browsers). This allows you to use decentralized code as modules and import them directly into your source code without having to worry about registry centers

It’s also browser-compatible. For example, if you’re using ES modules, you don’t have to worry about the usage of Webpack or Gulp.

Additionally, it’s TypeScript-based.

If you already work with TypeScript, it’s perfect for you: very straightforward, and there’s no need for extra settings. If you don’t work with TypeScript, that’s no problem. You can also use it with plain JavaScript.

In this article, we’re going to focus more on the how-to.

Specifically, we’ll go over how to create an API from scratch using only JavaScript, Deno, and a connection to a Postgres database.

The application we’ll develop is a basic CRUD over a domain of beers.

#deno #postgres #node #api #rest