Tuples: Fixed-Length Typed Arrays

Tuples are arrays with a fixed number of elements where each position has a specific type. They are perfect for structured data like coordinates or key-value pairs.

A tuple type lists the type of each element in order. The length is fixed and each position must hold the declared type.

const point: [number, number] = [10, 20];
const entry: [string, number] = ['age', 25];