How to extend a Type in TypeScript

Use an intersection type to extend a type in TypeScript. Intersection types are defined using an ampersand `&`.

Understanding TypeScript Generics - Seán Barry

TypeScript editing with Visual Studio Code

Cannot extend class using Typescript - Stack Overflow

No More Confusion About TypeScript's Type and Interface

TypeScript Programming with Visual Studio Code

Flexiblly Extend Nested Structures - Trees that Grow in

TIL: How Includes, Extends work with TS Config (with SvelteKit

How to extend types in Typescript

Extending Interfaces - Scaler Topics

Type vs. Interface in TypeScript - Geekflare

The type hierarchy tree

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Understanding Conditional Types in TypeScript