As a developer working on a project for a US-based company, I recently faced a challenge where I needed to define a set of related constants and use them to create custom types. TypeScript enums proved to be the perfect solution, allowing me to write more readable, maintainable, and type-safe code. In this tutorial, I … Read more >>
Recently, while working on a project for a client, I faced a bug because I used the wrong comparison operator. I was comparing two enum values using ==, thinking it would work. But the values didn’t match because one was a number and the other was a string. When I changed the operator to ===, … Read more >>
To check if an object is empty in TypeScript, count its own keys: Object.keys(obj).length === 0 is true for {} and false as soon as the object has a property. In real code you also need to handle null and undefined, and decide what to do with arrays, dates and class instances. This guide builds … Read more >>
While building an e-commerce admin dashboard in TypeScript, you define an enum called ProductCategory to manage all category types consistently across your app. This enum helps when filtering, tagging, or assigning categories to products during development. However, fetching product data from an external API returns only the category value (not the enum key). So, in … Read more >>
While developing an online shopping application, a developer needs to manage different order statuses, such as Pending, Shipped, Delivered, and Cancelled. To keep the code clean and consistent, they create a TypeScript enum called OrderStatus and use it inside a class named Order. In this tutorial, we will learn how to effectively use TypeScript enums … Read more >>
While building an e-commerce application in TypeScript, you might define a ProductCategory enum for valid categories like ‘electronics’, ‘clothing’, and ‘food’. When receiving data from a user or an API, it’s important to check if the provided category actually exists in the enum. This prevents invalid values from being processed or stored. This ensures your … Read more >>
Suppose you’re building an admin panel for a web app where users can have one of several roles, such as admin, editor, or viewer. You receive the user role from a backend API as a string, and you want to check whether this string is a valid role according to your enum before using it … Read more >>
Avoiding duplicate enum values in TypeScript is important to maintain clarity and avoid unexpected behavior when using enums. Here’s a realistic scenario showing how duplicate values can cause problems and how to avoid them. In this tutorial, we will learn how to avoid duplicate Enum values in TypeScript, how duplicate enum values can lead to … Read more >>
While working with TypeScript enums, I was required to convert the enum to a string because the support ticket had a status field stored as an enum in TypeScript, but I needed to show a readable string for the UI display. There are various methods to do this. In this tutorial, I will explain how to … Read more >>
In this tutorial, I will explain how to check if a string is part of an enum in TypeScript. If you’ve ever worked with enums in TypeScript, you know they are a powerful way to define a set of named constants. However, checking if a string belongs to an enum can be a bit tricky. … Read more >>