As developers and sysadmins, we often deal with commands that return JSON output. Tools like curl, kubectl, aws, or even custom scripts output JSON, but reading it directly in the terminal is cumbersome. Enter jq: a lightweight, flexible command-line JSON processor. In this tutorial, we’ll explore how to harness jq for querying, formatting, and manipulating […]

Terraform’s state is the persistent data structure that allows declarative configuration to work in practice. Without state, Terraform would have no reliable way to understand what already exists, what it manages, and what needs to change. This chapter explains: Why State Exists Terraform is declarative. You describe the desired end state of your infrastructure. To […]

Infrastructure as Code: Taking Control of Your Tech As a full-stack developer working with TypeScript, Node.js, and MongoDB, you’re focused on building amazing applications. But what happens when the underlying infrastructure – the servers, databases, and networks – becomes a constant source of complexity and potential headaches? That’s where Infrastructure as Code (IaC) comes in. […]

Why modules? JavaScript has evolved significantly over the years, and one of the critical areas of advancement is in how we manage and structure code using modules. Modules allow developers to break down complex applications into smaller, manageable parts, each with a specific purpose. There are several module systems that have been adopted over time, […]

The origins of the CommonJS module system CommonJS modules have been a foundational part of JavaScript, especially in Node.js, since before ES modules (ESM) were officially adopted. Designed to enable modular and maintainable code, CommonJS allows developers to import and export functionality across files using require and module.exports. This approach was crucial in shaping the […]

ESM, or ECMAScript Modules, is the official module system introduced in ECMAScript 6 (ES6), also known as ECMAScript 2015. ESM provides a native, standardized way to organize and structure code in JavaScript applications. Unlike CommonJS, which is synchronous and primarily used in Node.js, ESM is designed to work in both browser and server-side environments. Asynchronous […]