When working with objects in TypeScript, sometimes a complete copy of an object is needed, including all its nested properties. When we copy an object along with its related properties, it is referred to as deep cloning. Without deep cloning, if you change a nested property in the copied object, it might also change the original … Read more >>
Recently, I was working on a feature using TypeScript that required displaying user details retrieved from an external API. In that, I got an unexpected error of undefined values for some optional fields. For this, it was required to check whether those properties actually existed on the object before using them. TypeScript provides several ways … Read more >>
While building a TypeScript function, you might want to accept an object as a parameter, but you don’t care what properties it has; you want to make sure it’s some object and not a string, number, or null. For example, you are writing a logging function that accepts any object and prints it to the … Read more >>
I was working on a TypeScript project that tracked the status of different cities. There, I got a challenge that the list of city names kept changing, and I didn’t know all the keys ahead of time. At first, I tried using a loose object type, but that quickly led to confusion and potential errors. … Read more >>
While working on a TypeScript project, I had to deal with data coming from an external source, and I wasn’t sure what type it would be. At first, I used any type to make things easier, but it quickly caused errors that TypeScript didn’t catch. That’s when I looked into the unknown type. It seemed … Read more >>
While building an online shopping app in TypeScript, you first use namespaces to group code like Customer, Product, and Order in one file. It works fine for small projects. However, as the app grows, you can switch to modules to split code into separate files using export and import, making it easier to manage. TypeScript, … Read more >>
You may have faced some issues where your code breaks because an object is undefined. For example, you’re trying to access a property of an object, but that object was never assigned a value. In such cases, checking if the object is undefined helps prevent runtime errors and keeps your code safe. In this tutorial, … Read more >>
In TypeScript, there are two operators that can be used for handling default values: the nullish coalescing operator (??) and the logical OR operator (||). While they may seem similar at first glance, they have key differences in their behavior. In this tutorial, we’ll learn about the nullish coalescing operator and the logical OR operator … Read more >>
While working on a TypeScript project, you want to store some data, like a list of user roles and their permissions. Now you are not sure whether to use a Record or a normal Object. This can be confusing for many developers. Knowing the difference between Record and Object will help you choose the right … Read more >>
When working with TypeScript applications, especially in real-world scenarios like dynamic forms or conditional configurations, there are times when you need to build objects based on user input or business logic. For example, I encountered this while developing a property management app for a client, where not every listing had a garage, pool, or parking … Read more >>