Check out all our TypeScript tutorials.
Passing functions as parameters is one of those TypeScript skills that transforms how you write code. I’ve been working with TypeScript for over 5 years in enterprise applications, and this pattern shows up everywhere, from React hooks to API callbacks to custom validators in SharePoint Framework projects. In this guide, I’ll walk you through everything … Read more >>
When I’m building real TypeScript apps for clients in the US, I rarely write types just once. A function that fetches data for a React component might also feed a Redux selector, a service layer, and a couple of unit tests. If I hard‑code the same return type in three or four places, I know … Read more >>
I’ve been working with TypeScript for years, and one of the first things I do when jumping into a new project is check the version. It sounds simple, but knowing exactly which version you are running can save you hours of debugging weird type errors. In this tutorial, I will show you exactly how to … Read more >>
In this tutorial, I will explain how to handle catch error types in TypeScript with detailed methods and examples. Recently, while working on a project for a client in New York, I encountered an issue where the error messages in my catch blocks were not being handled properly. This led to a lot of confusion … Read more >>
Running TypeScript files isn’t as easy as running JavaScript, but once you set up your environment, it becomes second nature. In my years of developing enterprise-scale applications, I’ve found that knowing the right way to execute your code can save hours of debugging. In this tutorial, I will show you exactly how to run TypeScript … Read more >>
In this tutorial, I will explain the key differences between TypeScript and JavaScript, with a real-life scenario I faced as a developer. A few months ago, while working on a complex web application for a client, I encountered numerous bugs and issues due to JavaScript’s dynamic typing. This experience led me to explore TypeScript, which … Read more >>
As a developer, you should know how to use try-catch blocks to handle unexpected errors and exceptions in any programming language. In this tutorial, I will explain how to use try-catch in TypeScript with examples. I will also explain how to use try…catch, try…finally, and try…catch…finally blocks in TypeScript. Try-Catch in TypeScript Error handling is … Read more >>
As a developer, I once faced a challenge while working on a project for a US logistics company. We needed to create a reusable function to handle different types of data, from customer details to shipment information. Using generic arrow functions in TypeScript, we can achieve this. In this tutorial, I will explain how to … Read more >>
I encountered an issue during a project, where user input fields were often left blank. These null or undefined values caused unexpected behavior in the application. To handle this, I used the double question mark operator to provide default values seamlessly. In this tutorial, I will explain the double question mark (??) operator in TypeScript, … Read more >>
In this tutorial, I will explain the use of the exclamation mark in TypeScript, also known as the non-null assertion operator. Recently, while working on a project for a client, I encountered a situation where I needed to assure the TypeScript compiler that certain variables were not null or undefined. This tutorial will help you … Read more >>
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