Check out all our TypeScript tutorials.
While building a TypeScript project, you receive an object from an API or a function. You want to check the type of object during development to debug or better understand your code. Since TypeScript types are not available at runtime, you need a way to print helpful type-related information using typeof, instanceof, or by logging … Read more >>
While reviewing the code of a TypeScript project, I noticed a variable using the ‘any’ type. It was referred in many places to avoid type errors. Some developers think that it is the easiest way to make the code work. But later, using any keyword too much can hide problems and remove the benefits of … Read more >>
TypeScript is popular among developers who want to add type safety to their JavaScript code. When you start using TypeScript, you will see two types of files: .ts and .tsx. It is essential to understand the differences between them, particularly when using TypeScript with React. This tutorial explains the difference between TypeScript .ts and .tsx … Read more >>
I was working on a TypeScript project that required handling data from a third-party API. TypeScript doesn’t always know the exact type of a variable, especially when dealing with external APIs or complex data structures. Without defining the data, I was getting errors because we need a way to tell TypeScript about the type we … Read more >>
Recently, I was working on a TypeScript project that required creating a flexible way to store key-value pairs with type safety. The issue is… many developers struggle with properly typing objects in TypeScript. In this article, I’ll cover everything you need to know about the TypeScript Record utility type, with practical examples that will make … Read more >>
Recently, while building a frontend project with TypeScript, I had to use a REST API to fetch user data and submit form inputs. Initially, I began with the basic Fetch API, but as the project evolved, I needed something more effective, particularly for handling errors and implementing reusable logic. Then I used REST APIs to … Read more >>
While working on a TypeScript project, I needed to add extra information (metadata) to classes and their properties, such as logging when a method runs or validating input, without modifying their actual implementation. That’s when I discovered TypeScript decorators. Decorators allow you to add metadata, modify, or extend the behavior of classes, methods, and properties … Read more >>
As a TypeScript developer with years of experience, I’ve found that promises are one of the most powerful features when dealing with asynchronous operations. Whether you’re fetching data from an API, reading files, or executing time-consuming tasks, promises help you manage the flow of your application. Recently, I was working on a TypeScript project where … Read more >>
I was working on a TypeScript project, and I often encountered values that could be null or undefined. I had to repeatedly check for null, which made my code lengthy and difficult to read. Then I discovered TypeScript’s non-null assertion operator (denoted by an exclamation mark). This small symbol helped me write cleaner code while … Read more >>
Recently, I was building a TypeScript-based healthcare application where I needed to create different views of the same user data like some for public display, some for internal medical staff, and others for account settings. The issue was that each view required removing a different set of sensitive or internal-use-only properties from a complex interface. … Read more >>
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