The Internal of the TypeScript Compiler Explained — After working with TypeScript for a few years, I felt I had a good understanding of the language except I don’t really know how the compiler works internally. Recently, I got a chance to dig into the area that I knew very little about, and would like to share with…

What I’ve learned from using TypeScript’s type system — TypeScript is about types. It’s a strongly typed language with powerful compile-time type-checking. At the same time, its static typing is optional, so it’s compatible with JavaScript. I’ve been working with TypeScript for more than three years. Having learned a lot during this journey, but I still have the nice…

Everything you want to know about the Record utility type — Record is one of the TypeScript utility types and has been available out of the box since version 2.1. I have to admit that I was a little confused when I read the official definition for the first time: “Record<Keys,Type> Constructs an object type whose property keys are Keys and…

A cleaner, loosely coupled, and more maintainable solution — To build a solid RESTful API, there are well-established best practices and design patterns we can use. In this article, I will talk about how to use the Decorator pattern to consume RESTful API in Angular. HttpClient Service To consume a REST API in Angular, we can use HttpClient . HttpClient Service…

Complete guide and tricks on how to connect to the MySQL instances remotely — In my previous article, I wrote about hosting a site on Oracle always free offering. The Oracle always free is a generous offer. One of the eligible free services is: Arm-based Ampere A1 cores and 24 GB of memory usable as 1 VM or up to 4 VMs with 3,000…

Two Proven Techniques to Improve User Experience — Almost every Angular App has a loading spinner. When a user performs an action that triggers a long-running task, such as an HTTP request, a loading spinner can provide visual feedback to the user that the app is working on the request. When a user sees a spinner, their brain…

Using Reflect and the NestJS Undocumented API to Identify Unsecured Endpoints in Unit Tests — It is a given that an API should be secured to prevent potential attacks. However, it is surprising how often simple human mistakes can lead to an API endpoint being unprotected. A recent example of this is the Optus data breach, which was caused by “an API that did not…

Secure Code Best Practices with Real-World Examples — In Part 1 of this article, We walk through 4 common security risks and their prevention in the context of NestJS. It is worth noting that although NestJS is used here (as one of my favored API frameworks), those best practices are framework agnostic. Let’s continue to dive into other…

Top Secure Code Best Practices for NestJS Developers As a developer, we all know how critical is code security. The recent data breaches at Optus and Medibank highlight the importance of code security again. So, the question is: how can we write secure code to prevent various types of attacks…