Check out all our TypeScript tutorials.
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 >>
While working on a TypeScript project, I got a requirement to map enum values back to their corresponding names, essentially the reverse of how enums are typically used. With numeric enums, TypeScript handles this automatically. But when it came to string enums, I had to implement a custom solution to make reverse mapping work. In … 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 >>
While starting a new web development project, you might wonder whether to write your code in JavaScript or TypeScript. JavaScript is easy and widely used, while TypeScript adds additional features such as type checking and enhanced code safety. Choosing the right one depends on your project’s specific needs, team size, and long-term goals. In this … Read more >>
When working on TypeScript applications, especially those involving fixed sets of related values like states, cities, or user roles, enums become an essential tool for writing maintainable code. Recently, while working on a project for a US-based company, I encountered a requirement to loop through enum values to display options in a UI dynamically. For … Read more >>
While building a TypeScript project, you may need to define a set of constant values, like user roles, status codes, or payment methods. At this point, you might wonder: Should I use an Enum or a Type alias? This is a common question for both beginners and experienced developers. TypeScript provides several ways to define … Read more >>
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