Types vs. interfaces in TypeScript

Alright fellow artisans, let's talk about a common crossroads in our TypeScript journey: when to reach for a type and when to wield an interface. This isn't just about syntax; it's about crafting robust, maintainable code. We'll dive into practical scenarios, like elegantly defining props for your React components, and explore how these constructs handle more intricate scenarios such as advanced mapped and template literal types. Think of this as sharpening your tools to build with greater precision and clarity, ensuring your code is as solid as a well-built workbench.

The key takeaway here is understanding the subtle, yet significant, differences that impact your codebase. We'll explore how interfaces offer a unique advantage for declaration merging, a handy feature when extending existing definitions, especially in larger projects or when working with third-party libraries. Conversely, types shine when you need to define unions, intersections, or complex conditional types that interfaces can't quite capture. This post will equip you with the practical knowledge to make informed decisions, avoiding common pitfalls and even touching upon the performance nuances of each. By the end, you'll be crafting your TypeScript with the confidence of a seasoned craftsman, knowing exactly which tool to use for the job, leading to cleaner, more efficient, and more elegant solutions.

📰 Original article: https://blog.logrocket.com/types-vs-interfaces-typescript/

This content has been curated and summarized for Code Crafts readers.