Type Typescript

• A type in Typescript is a way to define the structure & behavior of data, allowing us to specify what kinds of values a variable can hold.
• Types can represent primitive types, complex structures, or combinations of both, providing flexibility in type-checking.

Key points:

• Primitive Types: Includes string, number, boolean, null, undefined, and void.
• Complex Types: Can include arrays, tuples, objects, and function types.
• Type Aliases: You can create custom types using type aliases for clarity and reusability.
• Union and Intersection Types: Allows the combination of multiple types using unions (|) and intersections (&).

Example

type Point = {
	x: number;
	y: number;
}

let point:Point = {x: 10, y: 20};

type ID = string | number; // Union type
let userId: ID = "user123" // Valid
userId = 123; // Also valid