Creating reusable real-world components using Typescript Generics

🎯 TypeScript Daily Digest!

In today’s edition of “Typescript Daily”, we will take a look at how “Generics” helps in creating reusable components/utilities. If you’re new to Generics in Typescript, I suggest you read these to get a high-level understanding of what they are before diving into this article.

1. 🚀 Unleashing TypeScript's Power: Exploring the Magic of Generics

2. 🎯 From Zero to Tuple Hero: Think You're Ready?

This article assumes that you have a basic understanding of what “Generics” is and how it is useful. We will dive into various reusable components and utilities that we can create using Generics. The examples indicated below are just to highlight the merits of Generics. You can extend and improve these examples however you like according to your use cases.

As always, let’s start by looking at a basic example, a medium-level example, and finally an advanced version of the example.

We will also take a look at some of the real-world use cases of building components and utilities using Generics.

Let’s get started!

Basic Example

In this basic example, we'll create a generic Box class that can hold any type of value. It will have methods to put a value into the box and retrieve it.

Medium Example

Let's create a generic Pair class that represents a key-value pair.

Advanced Example

Now, let's create a generic Repository class that simulates basic database operations.

Real-world Use Cases

1. API Data Fetching and Caching

2. Form Input Validation

3. Event Emitter

4. Data Transformation Utilities