Flexible Code Without Losing Type Safety with TS Generics

Summary of TypeScript Generics

TypeScript generics are a powerful feature that allows you to write flexible and type-safe code. Here's an overview of what we covered:

1. Basic Concepts:

   • Generics: Allow functions, classes, or interfaces to work with multiple types without losing type safety.
   • Constraints: Define rules for generic types using extends.

2. Examples:

   • Example 1: Flexible Props in Vue Components
     • Use generics to define props that can accept various types while maintaining type safety.
   • Example 2: Constraining Generics
     • Ensure that a function only works with objects that have a specific property (e.g., length).
   • Example 3: Keyof + Generics
     • Use the keyof operator to ensure that keys passed to functions are valid properties of an object.

Detailed Examples

Example 1: Flexible Props in Vue Components

typescript
 
1interface User {
2  id: number;
3  name: string;
4}
5
6// Generic component props
7type ComponentProps<T> = {
8  item: T;
9};
10
11const MyComponent = <T>(props: ComponentProps<T>) => {
12
13[Read the full article at DEV Community](https://dev.to/jacobandrewsky/flexible-code-without-losing-type-safety-with-ts-generics-1pem)
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